2.7 V to 5.5 V, <100 μA, 8-/10-/12-
Bit
nano
DAC, SPI Interface in LFCSP and SC70
Data Sheet
AD5601/AD5611/AD5621
Rev. I Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2005–2019 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
FEATURES
6-lead SC70 and LFCSP packages
Micropower operation: 100 µA maximum at 5 V
Power-down typically to 0.2 µA at 3 V
2.7 V to 5.5 V power supply
Guaranteed monotonic by design
Power-on reset to 0 V with brownout detection
3 power-down functions
Low power serial interface with Schmitt-triggered inputs
On-chip output buffer amplifier, rail-to-rail operation
SYNC interrupt facility
Minimized zero-code error
AD5601 buffered 8-bit DAC
B version: ±0.5 LSB INL
AD5611 buffered 10-bit DAC
B version: ±0.5 LSB INL
A version: ±4 LSB INL
AD5621 buffered 12-bit DAC
B version: ±1 LSB INL
A version: ±6 LSB INL
APPLICATIONS
Voltage level setting
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
GENERAL DESCRIPTION
The AD5601/AD5611/AD5621, members of the nanoDAC®
family, are single, 8-/10-/12-bit, buffered voltage output DACs
that operate from a single 2.7 V to 5.5 V supply, consuming
typically 75 µA at 5 V. The parts come in tiny LFCSP and SC70
packages. Their on-chip precision output amplifier allows rail-
to-rail output swing to be achieved. The AD5601/AD5611/
AD5621 utilize a versatile 3-wire serial interface that operates at
clock rates up to 30 MHz and is compatible with SPI, QSPI™,
MICROWIRE™, and DSP interface standards.
The reference for the AD5601/AD5611/AD5621 is derived
from the power supply inputs and, therefore, gives the widest
dynamic output range. The parts incorporate a power-on reset
circuit, which ensures that the DAC output powers up to 0 V
and remains there until a valid write to the device takes place.
The AD5601/AD5611/AD5621 contain a power-down feature
that reduces current consumption to typically 0.2 µA at 3 V.
FUNCTIONAL BLOCK DIAGRAM
AD5601/AD5611/AD5621
V
DD
V
OUT
GND
POWER-ON
RESET
DAC
REGISTER 12-/10-/8-BIT
DAC
INPUT
CONTROL
LOGIC
POWER-DOWN
CONTROL LOGIC
OUTPUT
BUFFER
RESISTOR
NETWORK
REF(+)
SCLK SDIN
06853-001
SYNC
Figure 1.
Table 1. Related Devices
Part Number Description
AD5641 2.7 V to 5.5 V, <100 µA, 14-bit nanoDAC in
SC70 and LFCSP packages
They also provide software-selectable output loads while in
power-down mode. The parts are put into power-down mode
over the serial interface.
The low power consumption of these parts in normal operation
makes them ideally suited to portable battery-operated equip-
ment. The combination of small package and low power makes
these nanoDAC devices ideal for level-setting requirements,
such as generating bias or control voltages in space-constrained
and power-sensitive applications.
PRODUCT HIGHLIGHTS
1. Available in 6-lead LFCSP and SC70 packages.
2. Low power, single-supply operation. The AD5601/
AD5611/AD5621 operate from a single 2.7 V to 5.5 V
supply with a maximum current consumption of 100 µA,
making them ideal for battery-powered applications.
3. The on-chip output buffer amplifier allows the output of
the DAC to swing rail-to-rail with a typical slew rate of
0.5 V/µs.
4. Reference is derived from the power supply.
5. High speed serial interface with clock speeds up to
30 MHz. Designed for very low power consumption.
The interface powers up only during a write cycle.
6. Power-down capability. When powered down, the DAC
typically consumes 0.2 µA at 3 V. Power-on reset with
brownout detection.
AD5601/AD5611/AD5621 Data Sheet
Rev. I | Page 2 of 21
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Timing Characteristics ................................................................ 4
Absolute Maximum Ratings ............................................................ 5
ESD Caution .................................................................................. 5
Pin Configurations and Function Descriptions ........................... 6
Typical Performance Characteristics ............................................. 7
Terminology .................................................................................... 13
Theory of Operation ...................................................................... 14
DAC Section ................................................................................ 14
Resistor String ............................................................................. 14
Output Amplifier ........................................................................ 14
Serial Interface ............................................................................ 14
Input Shift Register .................................................................... 14
SYNC Interrupt .......................................................................... 14
Power-On Reset .......................................................................... 16
Power-Down Modes .................................................................. 16
Microprocessor Interfacing ....................................................... 16
Applications Information .............................................................. 18
Choosing a Reference as Power Supply for the
AD5601/AD5611/AD5621 ....................................................... 18
Bipolar Operation Using the AD5601/AD5611/AD5621 ..... 18
Using the AD5601/AD5611/AD5621 with a Galvanically
Isolated Interface ........................................................................ 19
Power Supply Bypassing and Grounding ................................ 19
Outline Dimensions ....................................................................... 20
Ordering Guide .......................................................................... 21
REVISION HISTORY
4/2019—Rev. H to Rev. I
Changes to Table 2 ............................................................................ 5
Change to Figure 16 ......................................................................... 8
Updated Outline Dimensions ....................................................... 20
Changes to Ordering Guide .......................................................... 21
2/2016—Rev. G to Rev. H
Changes to Noise Parameter, Table 2 ............................................. 3
Changes to Serial Interface Section .............................................. 14
6/2013—Rev. F to Rev. G
Change to Ordering Guide ............................................................ 21
2/2012—Rev. E to Rev. F
Added 6-Lead LFCSP ......................................................... Universal
Changes to Features Section, General Description Section,
Table 1, and Product Highlights Section ....................................... 1
Changes to Table 4 ............................................................................ 5
Added Figure 4; Renumbered Sequentially .................................. 6
Changes to Table 5 ............................................................................ 6
Changes to Choosing a Reference as Power Supply for the
AD5601/AD5611/AD5621 Section .............................................. 18
Updated Outline Dimensions ....................................................... 20
Changes to Ordering Guide .......................................................... 21
7/2010—Rev. D to Rev. E
Changes to Figure 1 .......................................................................... 1
5/2008—Rev. C to Rev. D
Changes to General Description Section ....................................... 1
Changes to Table 2 ............................................................................. 3
Changes to Choosing a Reference as Power Supply for the
AD5601/AD5611/AD5621 Section .............................................. 18
Changes to Ordering Guide .......................................................... 20
12/2007—Rev. B to Rev. C
Changes to Features .......................................................................... 1
Changes to Table 2 ............................................................................. 3
Changes to AD5601/AD5611/AD5621 to ADSP-2101
Interface Section ............................................................................. 16
Updated Outline Dimensions ....................................................... 20
Changes to Ordering Guide .......................................................... 20
7/2005—Rev. A to Rev. B
Changes to Figure 48 ...................................................................... 17
Changes to Galvanically Isolated Interface Section ................... 19
Changes to Figure 52 ...................................................................... 19
3/2005—Rev. 0 to Rev. A
Changes to Timing Characteristics ................................................. 4
Changes to Absolute Maximum Ratings ........................................ 5
Changes to Full Scale Error Section ................................................ 7
Changes to Figure 20 ...................................................................... 10
Changes to Theory of Operation .................................................. 14
Changes to Power Down Modes .................................................. 15
1/2005—Revision 0: Initial Version
Data Sheet AD5601/AD5611/AD5621
Rev. I | Page 3 of 21
SPECIFICATIONS
VDD = 4.5 V to 5.5 V; RL = 2 kΩ to GND; CL = 200 pF to GND; all specifications TMIN to TMAX, unless otherwise noted. Temperature range
for A/B grades is −40°C to +125°C, typical at 25°C.
Table 2.
A Grade B Grade
Parameter Min Typ Max Min Typ Max Unit Test Conditions/Comments
STATIC PERFORMANCE
AD5601
Resolution 8 Bits
Relative Accuracy1 (INL) ±0.5 LSB
Differential Nonlinearity (DNL)
±0.5
LSB
Guaranteed monotonic by design
AD5611
Resolution 10 Bits
Relative Accuracy1 (INL) ±4 ±0.5 LSB
Differential Nonlinearity (DNL) ±0.5 ±0.5 LSB Guaranteed monotonic by design
AD5621
Resolution 12 Bits
Relative Accuracy1 (INL) ±6 ±1 LSB
Differential Nonlinearity (DNL) ±0.5 ±0.5 LSB Guaranteed monotonic by design
Zero-Code Error 0.5 10 0.5 10 mV All 0s loaded to DAC register
Full-Scale Error ±0.5 ±0.5 mV All 1s loaded to DAC register
Offset Error
±0.063
±0.063
±10
mV
Gain Error ±0.0004 ±0.037 ±0.0004 ±0.037 %FSR
Zero-Code Error Drift 5.0 5.0 µV/°C
Gain Temperature Coefficient 2.0 2.0 ppm
FSR/°C
OUTPUT CHARACTERISTICS2
Output Voltage Range 0 VDD 0 VDD V
Output Voltage Settling Time 6 10 6 10 µs Code ¼ scale to ¾ scale
Slew Rate 0.5 0.5 V/µs
Capacitive Load Stability 470 470 pF RL = ∞
1000 1000 pF RL = 2 kΩ
Output Noise Spectral Density 120 120 nV/√Hz DAC code = midscale,1 kHz
Noise 2 2 µV rms DAC code = midscale,
0.1 Hz to 10 Hz bandwidth
Digital-to-Analog Glitch Impulse 5 5 nV-s 1 LSB change around major carry
Digital Feedthrough 0.2 0.2 nV-s
Short-Circuit Current 15 15 mA VDD = 3 V/5 V
DC Output Impedance
0.5
0.5
Ω
LOGIC INPUTS
Input Current3 ±2 ±2 µA
Input High Voltage, V
INH
1.8
1.8
V
V
DD
= 4.7 V to 5.5 V
1.4 1.4 V VDD = 2.7 V to 3.6 V
Input Low Voltage, VINL 0.8 0.8 V VDD = 4.7 V to 5.5 V
0.6 0.6 V VDD = 2.7 V to 3.6 V
Pin Input Capacitance 3 3 pF
AD5601/AD5611/AD5621 Data Sheet
Rev. I | Page 4 of 21
A Grade B Grade
Parameter Min Typ Max Min Typ Max Unit Test Conditions/Comments
POWER REQUIREMENTS
VDD 2.7 5.5 2.7 5.5 V All digital inputs at 0 V or VDD
IDD for Normal Mode DAC active and excluding load
current
VDD = 4.5 V to 5.5 V 75 100 75 100 µA VIH = VDD and VIL = GND
VDD = 2.7 V to 3.6 V 60 90 60 90 µA VIH = VDD and VIL = GND
IDD for All Power-Down Modes VIH = VDD and VIL = GND
VDD = 4.5 V to 5.5 V 0.5 0.5 µA VIH = VDD and VIL = GND
V
DD
= 2.7 V to 3.6 V
0.2
0.2
µA
V
IH
= V
DD
and V
IL
= GND
POWER EFFICIENCY
IOUT/IDD 96 96 % ILOAD = 2 mA and VDD = ±5 V
1 Linearity calculated using a reduced code range: AD5621 from Code 64 to Code 4032; AD5611 from Code 16 to Code 1008; AD5601 from Code 4 to Code 252.
2 Guaranteed by design and characterization, not production tested.
3 Total current flowing into all pins.
TIMING CHARACTERISTICS
VDD = 2.7 V to 5.5 V; all specifications TMIN to TMAX, unless otherwise noted. See Figure 2.
Table 3.
Parameter
Limit
1
Unit
Test Conditions/Comments
t12 33 ns min SCLK cycle time
t2 5 ns min SCLK high time
t3 5 ns min SCLK low time
t4 10 ns min SYNC to SCLK falling edge setup time
t5 5 ns min Data setup time
t6 4.5 ns min Data hold time
t7 0 ns min SCLK falling edge to SYNC rising edge
t
8
20
ns min
Minimum SYNC high time
t9 13 ns min SYNC rising edge to next SCLK falling edge ignored
1 All input signals are specified with tr = tf = 1 ns/V (10% to 90% of VDD) and timed from a voltage level of (VIL + VIH)/2.
2 Maximum SCLK frequency is 30 MHz.
t
4
t
3
t
2
t
5
t
7
t
6
D0D1D2D14D15
SYNC
SCLK
06853-002
t
9
t
1
t
8
D15 D14
SDIN
Figure 2. Timing Diagram
Data Sheet AD5601/AD5611/AD5621
Rev. I | Page 5 of 21
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 4.
Parameter Rating
VDD to GND −0.3 V to +7.0 V
Digital Input Voltage to GND −0.3 V to VDD + 0.3 V
VOUT to GND −0.3 V to VDD + 0.3 V
Operating Temperature Range
Industrial (A/B Grades) −40°C to +125°C
Storage Temperature Range −65°C to +160°C
Maximum Junction Temperature 150°C
SC70 Package
θJA Thermal Impedance 433.34°C/W
θJC Thermal Impedance 149.47°C/W
LFCSP Package
θJA Thermal Impedance 95°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) 215°C
Infrared (15 sec) 220°C
ESD (Human Body Model) 2.0 kV
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
ESD CAUTION
AD5601/AD5611/AD5621 Data Sheet
Rev. I | Page 6 of 21
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
AD5601/
AD5611/
AD5621
TOP VIEW
(Not to Scale)
V
OUT
SYNC
16
GNDSCLK
25
SDIN V
DD
34
06853-003
Figure 3. 6-Lead SC70 Pin Configuration
06853-053
1V
DD
3SDIN
2SCLK
NOTES:
1. CONNECT THE EXPOSED PAD TO GND.
6V
OUT
5GND
4 SYNC
TOP VIEW
(Not to Scale)
AD5601/
AD5611/
AD5621
Figure 4. 6-Lead LFCSP Pin Configuration
Table 5. Pin Function Descriptions
SC70
Pin No.
LFCSP
Pin No. Mnemonic Description
1 4 SYNC Level-Triggered Control Input (Active Low). This is the frame synchronization signal for the input
data. When SYNC goes low, it enables the input shift register, and data is transferred in on the falling
edges of the clocks that follow. The DAC is updated following the 16th clock cycle, unless SYNC is
taken high before this edge, in which case the rising edge of SYNC acts as an interrupt and the write
sequence is ignored by the DAC.
2 2 SCLK Serial Clock Input. Data is clocked into the input shift register on the falling edge of the serial clock
input. Data can be transferred at rates up to 30 MHz.
3 3 SDIN Serial Data Input. This device has a 16-bit shift register. Data is clocked into the register on the falling
edge of the serial clock input.
4 1 VDD Power Supply Input. The AD5601/AD5611/AD5621 can be operated from 2.7 V to 5.5 V. Decouple VDD
to GND.
5 5 GND Ground. Ground reference point for all circuitry on the AD5601/AD5611/AD5621.
6 6 VOUT Analog Output Voltage from the DAC. The output amplifier has rail-to-rail operation.
EP Exposed Pad. Connect to GND.
Data Sheet AD5601/AD5611/AD5621
Rev. I | Page 7 of 21
TYPICAL PERFORMANCE CHARACTERISTICS
–1.0
–0.5
0
0.5
1.0
DAC CODE
INL ERROR (LSB)
06853-004
64 564 1064 1564 2064 2564 3064 3564 4064
VDD = VREF = 5V
TA = 25°C
Figure 5. Typical AD5621 INL
0
16 116 216 316 416 516 616 716 816 916
DAC CODE
INL ERROR (LSB)
V
DD
= V
REF
= 5V
T
A
=
25°C
06853-005
–0.5
–0.4
–0.3
–0.2
–0.1
0.1
0.2
0.3
0.4
0.5
Figure 6. Typical AD5611 INL
0
4 54 104 154 204
DAC CODE
INL ERROR (LSB)
V
DD
= V
REF
= 5V
T
A
= 25°C
06853-006
–0.100
–0.075
–0.050
–0.025
0.025
0.050
0.075
0.100
Figure 7. Typical AD5601 INL
–2.5
–1.5
–0.5
0.5
1.5
2.5
64 564 1064 1564 2064 2564 3064 3564
DAC CODE
TOTAL UNADJUSTED ERROR (LSB)
06853-007
0
1.0
2.0
–2.0
–1.0
VDD = VREF = 5V
TA = 25°C
4064
Figure 8. AD5621 Total Unadjusted Error (TUE)
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
16 116 216 316 416 516 616 716 816 916
DAC CODE
TOTAL UNADJUSTED ERROR (LSB)
06853-008
VDD = VREF = 5V
TA = 25°C
Figure 9. AD5611 Total Unadjusted Error (TUE)
–0.20
–0.15
–0.10
–0.05
0.05
0.10
0.15
0.20
4 54 104 154 204
DAC CODE
TOTAL UNADJUSTED ERROR (LSB)
0
V
DD
= V
REF
= 5V
T
A
= 25°C
06853-009
Figure 10. AD5601 Total Unadjusted Error (TUE)
AD5601/AD5611/AD5621 Data Sheet
Rev. I | Page 8 of 21
–0.20
–0.15
–0.10
–0.05
0
0.05
0.10
0.15
0.20
64 564 1064 1564 2064 2564 3064 3564
DAC CODE
DNL ERROR (LSB)
V
DD
= 5V
T
A
= 25°C
0
06853-010
Figure 11. Typical AD5621 DNL
–0.05
–0.04
–0.03
–0.02
–0.01
0
0.01
0.02
0.03
0.04
0.05
16 116 216 316 416 516 616 716 816 916
DAC CODE
DNL ERROR (LSB)
VDD = 5V
TA = 25°C
06853-011
Figure 12. Typical AD5611 DNL
–0.010
–0.008
–0.006
–0.004
–0.002
0
0.002
0.004
0.006
0.008
0.010
4 54 104 154 204
DAC CODE
DNL ERROR (LSB)
06853-012
VDD = 5V
TA = 25°C
Figure 13. Typical AD5601 DNL
0
2
4
6
8
10
12
0.05456
0.05527
0.05599
0.05671
0.05742
0.05814
0.05885
0.06648
0.06710
0.06773
0.06835
0.06897
0.06960
0.07022
0.07084
0.07147
0.07209
0.07271
0.07334
I
DD
(mA)
NUMBER OF DEVICES
06853-013
V
DD
= 5V
V
IH
= DV
DD
V
IL
= GND
T
A
= 25°C
V
DD
= 3V
V
IH
= DV
DD
V
IL
= GND
T
A
= 25°C
Figure 14. IDD Histogram (3 V/5 V)
CH1 = 5V/DIV CH2 = 1V/DIV TIME BASE = 2µs/DIV
CH1 = SCLK
CH2 = V
OUT
06853-014
T
A
= 25°C
V
DD
= 5V
Figure 15. Full-Scale Settling Time
CH1 = 5V/DIV CH2 = 1V/DIV TIME BASE = 1µs/DIV
CH1 = SCLK
CH2 = V
OUT
T
A
= 25°C
V
DD
= 5V
06853-015
Figure 16. Half-Scale Settling Time
Data Sheet AD5601/AD5611/AD5621
Rev. I | Page 9 of 21
CH2
CH1
06853-016
V
DD
= 5V
T
A
= 25°C
V
DD
V
OUT
= 70mV
CH1 1V, CH2 20mV, TIME BASE = 20µs/DIV
Figure 17. Power-On Reset to 0 V
CH1 1V, CH2 5V, TIME BASE = 50µs/DIV
CH2
CH1
06853-017
V
DD
V
OUT
V
DD
= 5V
T
A
= 25°C
Figure 18. VDD vs. VOUT
SAMPLE NUMBER
AMPLITUDE (V)
0 100 200 300 400 500
2.458
2.456
2.454
2.452
2.450
2.448
2.446
2.444
2.442
2.440
2.438
2.436
T
A
= 25°C
V
DD
= 5V
LOAD = 2kΩ AND 220pF
CODE 0x2000 TO 0x1FFF
10ns/SAMPLE NUMBER
06853-018
Figure 19. Digital-to-Analog Glitch Energy
06853-019
CH1
CH1 5µV/DIV
V
DD
= 5V
T
A
= 25°C
MIDSCALE LOADED
Figure 20. 1/f Noise, 0.1 Hz to 10 Hz Bandwidth
CH1 5V, CH2 1V, TIME BASE = 2µs/DIV
CH1
CH2
06853-020
V
DD
= 5V
T
A
= 25°C
V
OUT
Figure 21. Exiting Power-Down Mode
0
20
40
60
80
100
120
140
0 5 10 15 20 25
FREQUENCY (MHz)
I
DD
(µA)
06853-021
3/4 SCALE
FULL SCALE
1/4 SCALE
MIDSCALE
ZERO SCALE
Figure 22. IDD vs. SCLK vs. Code
AD5601/AD5611/AD5621 Data Sheet
Rev. I | Page 10 of 21
0
100
200
300
400
500
600
700
100 1k 10k 100k
FREQUENCY (Hz)
OUTPUT NOISE SPECTRAL DENSITY (nV/ Hz)
VDD = 5V
TA = 25°C
UNLOADED OUTPUT
MIDSCALE
ZERO SCALE
FULL SCALE
06853-022
Figure 23. Noise Spectral Density
0
10
20
30
40
50
60
70
0 2000 4000 6000 8000 10000 12000 14000 16000
DIGITAL INPUT CODE
I
DD
(
µA)
V
DD
= 5V
V
DD
= 3V
06853-023
T
A
= 25°C
Figure 24. Supply Current vs. Digital Input Code
–0.6
–0.4
–0.2
0.0
0.2
0.4
0.6
0.8
–15 –10 –5 0 5 10 15
I (mA)
∆V
OUT
(V)
06853-024
DAC LOADED WITH ZERO-SCALE CODE
V
DD
= 5V
T
A
= 25°C
DAC LOADED WITH FULL-SCALE CODE
Figure 25. Sink and Source Capability
–0.6
–0.5
–0.4
–0.3
–0.2
–0.1
0
0.1
0.2
0.3
–40 –20 0 4020 60 80 100 120
TEMPERATURE (°C)
INL ERROR (LSB)
06853-025
AD5611 MIN INL ERROR
AD5621 MIN INL ERROR
AD5621 MAX INL ERROR
VDD = 5V
AD5611 MAX INL ERROR AD5601 MAX INL ERROR
AD5601 MIN INL ERROR
Figure 26. INL vs. Temperature (5 V)
–0.08
–0.07
–0.06
–0.05
–0.04
–0.03
–0.02
–0.01
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
–40 10 60 110 160
TEMPERATURE (°C)
DNL ERROR (LSB)
V
DD
= 5V
06853-026
AD5611 MIN DNL ERROR
AD5621 MAX DNL ERROR
AD5611 MAX DNL ERROR
AD5601 MAX DNL ERROR
AD5601 MIN DNL ERROR
AD5621 MIN DNL ERROR
Figure 27. DNL vs. Temperature (5 V)
–40 40 60 80 100–20 0 –20 120 140
TEMPERATURE (°C)
ERROR (LSB)
AD5621 ZERO-CODE ERROR
AD5611 FULL-SCALE ERROR
AD5621 FULL-SCALE ERROR
V
DD
= 5V
06853-027
0.00149
0.00099
0.00049
–0.00001
–0.00051
AD5611 ZERO-CODE ERROR
AD5601 ZERO-CODE ERROR
AD5601 FULL-SCALE ERROR
Figure 28. Zero-Code Error and Full-Scale Error vs. Temperature
Data Sheet AD5601/AD5611/AD5621
Rev. I | Page 11 of 21
–0.5
–0.3
–0.1
0.1
0.3
0.5
1.5
–40 –20
TEMPERATURE (°C)
TOTAL UNADJUSTED ERRO
R
(LSB)
AD5601 MIN TUE
AD5611 MIN TUE
AD5621 MIN TUE
06853-028
0.7
0.9
1.1
1.3
0 20 40 60 80 100 120 140
AD5621 MAX TUE
AD5601 MAX TUE
AD5611 MAX TUE
Figure 29. Total Unadjusted Error (TUE) vs. Temperature (5 V)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.1
1.2
1.3
1.4
1.5
–40 –20 0 20 100 120 140
TEMPERATURE (°C)
OFFSET ERROR (mV)
40 60 80
1.0 V
DD
= 5V
V
DD
= 3V
06853-029
Figure 30. Offset Error vs. Temperature (3 V/5 V Supply)
–0.016
–0.014
–0.012
–0.010
–0.008
–0.006
–0.004
–0.002
0
–40 –20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
GAIN ERROR (%FSR)
V
DD
= 3V
V
DD
= 5V
06853-030
Figure 31. Gain Error vs. Temperature (3 V/5 V Supply)
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
–40 –20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
I
DD
(mA)
V
DD
= 3V
V
DD
= 5V
06853-031
Figure 32. Supply Current vs. Temperature (3 V/5 V Supply)
2.7 3.2 3.7 4.2 4.7 5.2
SUPPLY VOLTAGE (V)
INL ERROR (LSB)
T
A
= 25°C
06853-032
AD5621 MAX INL ERROR
AD5611 MIN INL ERROR
AD5621 MIN INL ERROR
AD5611 MAX INL ERROR
AD5601 MIN INL ERROR
AD5601 MAX INL ERROR
–0.6
–0.4
–0.2
0
0.2
0.4
Figure 33. INL vs. Supply Voltage at 25°C
–0.10
–0.09
–0.08
–0.07
–0.06
–0.05
–0.04
–0.03
–0.02
–0.01
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
2.7 3.2 3.7 4.2 4.7 5.2 5.7 6.2 6.7
SUPPLY VOLTAGE (V)
DNL ERROR (LSB)
0
T
A
= 25°C
AD5621 MAX DNL ERROR
AD5601 MAX DNL ERROR
AD5601 MIN DNL ERROR
AD5621 MIN DNL ERROR
06853-033
AD5611 MAX DNL ERROR
AD5611 MIN DNL ERROR
Figure 34. DNL vs. Supply Voltage at 25°C
AD5601/AD5611/AD5621 Data Sheet
Rev. I | Page 12 of 21
2.7 3.2 3.7 4.2 4.7 5.2
SUPPLY VOLTAGE (V)
TOTAL UNADJUSTED ERROR (LSB)
T
A
= 25°C
AD5621 MAX TUE
AD5601 MAX TUE
AD5611 MIN TUE
AD5601 MIN TUE
AD5621 MIN TUE
06853-034
–0.3
–0.1
0.1
0.3
0.5
0.7
0.9
1.1
1.3
1.5
AD5611 MAX TUE
Figure 35. Total Unadjusted Error (TUE) vs. Supply Voltage at 25°C
2.7 3.2 3.7 4.2 4.7 5.2 5.7 6.2 6.7
SUPPLY VOLTAGE (V)
ERROR (LSB)
T
A
= 25°C AD5621 ZERO-CODE ERROR
AD5611 ZERO-CODE ERROR
AD5621 FULL-SCALE ERROR
AD5611 FULL-SCALE ERROR
AD5601 ZERO-CODE ERROR
AD5601 FULL-SCALE ERROR
06853-035
–0.0004
–0.0002
0
0.0002
0.0004
0.0006
0.0008
0.0010
Figure 36. Zero-Code Error and Full-Scale Error vs. Supply Voltage at 25°C
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
2.7 3.2 3.7 4.2 4.7 5.2
SUPPLY VOLTAGE (V)
I
DD
(
m
A)
TA = 25°C
06853-036
Figure 37. Supply Current vs. Supply Voltage at 25°C
0
50
100
150
200
250
300
350
400
450
0
V
LOGIC
(V)
I
DD
(µA)
SCLK/SDIN
INCREASING
V
DD
= 3V
SCLK/SDIN DECREASING V
DD
= 3V
SCLK/SDIN
DECREASING
V
DD
= 5V
SCLK/SDIN
INCREASING
V
DD
= 5V
645321
T
A
= 25°C
06853-037
Figure 38. SCLK/SDIN vs. Logic Voltage
Data Sheet AD5601/AD5611/AD5621
Rev. I | Page 13 of 21
TERMINOLOGY
Relative Accuracy
For the DAC, relative accuracy or integral nonlinearity (INL) is
a measure of the maximum deviation, in LSBs, from a straight
line passing through the endpoints of the DAC transfer func-
tion. See Figure 5 to Figure 7 for plots of typical INL vs. code.
Differential Nonlinearity
Differential nonlinearity (DNL) is the difference between the
measured change and the ideal 1 LSB change between any two
adjacent codes. A specified differential nonlinearity of ±1 LSB
maximum ensures monotonicity. This DAC is guaranteed
monotonic by design. See Figure 11 to Figure 13 for plots of
typical DNL vs. code.
Zero-Code Error
Zero-code error is a measure of the output error when zero
code (0x0000) is loaded to the DAC register. Ideally, the output
is 0 V. The zero-code error is always positive in the
AD5601/AD5611/AD5621 because the output of the DAC cannot
go below 0 V. Z e r o -code error is due to a combination of the
offset errors in the DAC and output amplifier. Zero-code error
is expressed in mV. See Figure 28 for a plot of zero-code error
vs. temperature.
Full-Scale Error
Full-scale error is a measure of the output error when full-scale
code (0xFFFF) is loaded to the DAC register. Ideally, the output
is VDD − 1 LSB. Full-scale error is expressed in mV. See Figure
28 for a plot of full-scale error vs. temperature.
Gain Error
Gain error is a measure of the span error of the DAC. It is the
deviation in slope of the DAC transfer characteristic from the
ideal, expressed as a percent of the full-scale range.
Total Unadjusted Error
Total unadjusted error (TUE) is a measure of the output error,
taking all the various errors into account. See Figure 8 to
Figure 10 for plots of typical TUE vs. code.
Zero-Code Error Drift
Zero-code error drift is a measure of the change in zero-code
error with a change in temperature. It is expressed in µV/°C.
Gain Temperature Coefficient
Gain temperature coefficient is a measure of the change in gain
error with changes in temperature. It is expressed in (ppm of
full-scale range)/°C.
Digital-to-Analog Glitch Impulse
Digital-to-analog glitch impulse is the impulse injected into the
analog output when the input code in the DAC register changes
state. It is normally specified as the area of the glitch in nV-s
and is measured when the digital input code is changed by
1 LSB at the major carry transition (0x2000 to 0x1FFF). See
Figure 19.
Digital Feedthrough
Digital feedthrough is a measure of the impulse injected into
the analog output of the DAC from the digital inputs of the
DAC, but is measured when the DAC output is not updated.
It is specified in nV-s and is measured with a full-scale code
change on the data bus—from all 0s to all 1s and vice versa.
AD5601/AD5611/AD5621 Data Sheet
Rev. I | Page 14 of 21
THEORY OF OPERATION
DAC SECTION
The AD5601/AD5611/AD5621 DACs are fabricated on a
CMOS process. The architecture consists of a string DAC
followed by an output buffer amplifier. Figure 39 is a block
diagram of the DAC architecture.
VDD
VOUT
GND
RESISTOR
NETWORK
REF (+)
REF (–) OUTPUT
AMPLIFIER
DAC REGISTER
06853-038
Figure 39. DAC Architecture
Because the input coding to the DAC is straight binary, the ideal
output voltage is given by
×= n
DD
OUT
D
VV
2
where:
D is the decimal equivalent of the binary code that is loaded to
the DAC register.
n is the bit resolution of the DAC.
RESISTOR STRING
The resistor string structure is shown in Figure 40. It is simply a
string of resistors, each of Value R. The code loaded to the DAC
register determines at which node on the string the voltage is
tapped off to be fed into the output amplifier. The voltage is
tapped off by closing one of the switches connecting the string
to the amplifier. Because it is a string of resistors, it is guaran-
teed monotonic.
R
R
R
R
RTO OUTPUT
AMPLIFIER
06853-039
Figure 40. Resistor String Structure
OUTPUT AMPLIFIER
The output buffer amplifier is capable of generating rail-to-rail
voltages on its output, giving an output range of 0 V to VDD. It is
capable of driving a load of 2 kΩ in parallel with 1000 pF to
GND. The source and sink capabilities of the output amplifier
are shown in Figure 25. The slew rate is 0.5 V/µs, with a half-
scale settling time of 8 µs with the output loaded.
SERIAL INTERFACE
The AD5601/AD5611/AD5621 have a 3-wire serial interface
(SYNC, SCLK, and SDIN) that is compatible with SPI, QSPI,
and MICROWIRE interface standards as well as most DSPs. See
Figure 2 for a timing diagram of a typical write sequence.
The write sequence begins by bringing the SYNC line low. Data
from the SDIN line is clocked into the 16-bit shift register on
the falling edge of SCLK. The serial clock frequency can be as
high as 30 MHz, making the AD5601/AD5611/AD5621 com-
patible with high speed DSPs. On the 16th falling clock edge,
the last data bit is clocked in and the programmed function is
executed (a change in DAC register contents and/or a change
in the mode of operation). At this stage, the SYNC line can be
kept low or brought high. In either case, it must be brought high
for a minimum of 20 ns before the next write sequence so that a
falling edge of SYNC can initiate the next write sequence.
Because the SYNC buffer draws more current when VIN = 1.8 V
than it does when VIN = 0.8 V, idle the SYNC buffer low between
write sequences for even lower power operation of the device, as
mentioned previously. However, it must be brought high again
just before the next write sequence.
INPUT SHIFT REGISTER
The input shift register is 16 bits wide (see Figure 41). The first
two bits are control bits, which control the operating mode of
the part (normal mode or any one of three power-down
modes). For a complete description of the various modes, see
the Power-Down Modes section. For the AD5621, the next
12 bits are the data bits, which are transferred to the DAC
register on the 16th falling edge of SCLK. The information in
the last two bits is ignored by the AD5621. See Figure 42 and
Figure 43 for the AD5611 and AD5601 input shift register map.
SYNC INTERRUPT
In a normal write sequence, the SYNC line is kept low for at
least 16 falling edges of SCLK and the DAC is updated on the
16th falling edge. However, if SYNC is brought high before the
16th falling edge, this acts as an interrupt to the write sequence.
The shift register is reset and the write sequence is seen as
invalid. Neither an update of the DAC register contents nor a
change in the operating mode occurs (see Figure 44).
Data Sheet AD5601/AD5611/AD5621
Rev. I | Page 15 of 21
DB15 (MS B)
PD1 PD0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 XX
DB0 (L S B)
DATA BI TS
POWER-DOWN MODES
0
1
0
1
0
0
1
1
NORMAL OPERATION
1kΩ TO GND
100kΩ TO GND
THREE-STATE
06853-040
Figure 41. AD5621 Input Register Contents
DB15 (MS B)
PD1 PD0 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 XXXX
DB0 (L S B)
DATA BI TS
POWER-DOWN MODES
0
1
0
1
0
0
1
1
NORMAL OPERATION
1kΩ TO GND
100kΩ TO GND
THREE-STATE
06853-041
Figure 42. AD5611 Input Register Contents
DB15 (MS B)
PD1 PD0 D8 D7 D6 D5 D4 D3 D2 D1 XXXXXX
DB0 (L S B)
DATA BI TS
POWER-DOWN MODES
0
1
0
1
0
0
1
1
NORMAL OPERATION
1kΩ TO GND
100kΩ TO GND
THREE-STATE
06853-042
Figure 43. AD5601 Input Register Contents
06853-043
DB15 DB15 DB0DB0
INVALI D WRITE SE QUENCE :
SYNC HI GH BEFORE 16
TH
FALLING EDGE VALID W RITE S E QUENCE, OUTPUT UPDAT E S
ON T HE 16
TH
FALLING EDGE
SYNC
SCLK
SDIN
Figure 44. SYNC Interrupt Facility
AD5601/AD5611/AD5621 Data Sheet
Rev. I | Page 16 of 21
POWER-ON RESET
The AD5601/AD5611/AD5621 contain a power-on reset circuit
that controls the output voltage during power-up. The DAC
register is filled with 0s and the output voltage is 0 V. It remains
there until a valid write sequence is made to the DAC. This is
useful in applications in which it is important to know the state
of the DAC output while it is in the process of powering up.
POWER-DOWN MODES
The AD5601/AD5611/AD5621 have four separate modes of
operation. These modes are software-programmable by setting
two bits (DB15 and DB14) in the control register. Table 6 shows
how the state of the bits corresponds to the operating mode of
the device.
Table 6. Operating Modes of the AD5601/AD5611/AD5621
DB15 DB14 Operating Mode
0 0 Normal operation
Power-down modes:
0 1 1 kΩ to GND
1 0 100 kΩ to GND
1 1 Three-state
When both bits are set to 0, the part has normal power
consumption of 100 μA maximum at 5 V. However, for the
three power-down modes, the supply current falls to typically
0.2 μA at 3 V.
Not only does the supply current fall, but the output stage is
also internally switched from the output of the amplifier to a
resistor network of known values. This has the advantage that
the output impedance of the part is known while the part is in
power-down mode.
There are three different options: the output is connected
internally to GND through a 1 kΩ resistor or a 100 kΩ resistor,
or the output is left open-circuited (three-stated). Figure 45
shows the output stage.
POWER-DOWN
CIRCUITRY RESISTOR
NETWORK
VOUT
RESISTOR
STRING DAC AMPLIFIER
06853-044
Figure 45. Output Stage During Power-Down
The bias generator, output amplifier, resistor string, and other
associated linear circuitry are all shut down when power-down
mode is activated. However, the contents of the DAC register
are unaffected when in power-down. The time to exit power-
down is typically 13 μs for VDD = 5 V and 16 μs for VDD = 3 V.
See Figure 21 for a plot.
MICROPROCESSOR INTERFACING
AD5601/AD5611/AD5621 to ADSP-BF531 Interface
Figure 46 shows a serial interface between the AD5601/AD5611/
AD5621 and the ADSP-BF531. The ADSP-BF531 processor has
an integrated SPI port that can connect directly to the SPI pins of
the AD5601/AD5611/AD5621.
Figure 46. AD5601/AD5611/AD5621 to ADSP-BF531 Interface
AD5601/AD5611/AD5621 to 68HC11/68L11 Interface
Figure 47 shows a serial interface between the AD5601/
AD5611/AD5621 and the 68HC11/68L11 microcontroller. SCK
of the 68HC11/68L11 drives the SCLK of the AD5601/AD5611/
AD5621, while the MOSI output drives the serial data line of
the DAC. The SYNC signal is derived from a port line (PC7).
The setup conditions for proper operation of this interface are
as follows: the 68HC11/68L11 must be configured so that the
CPOL bit is 0 and the CPHA bit is 1. When data is being trans-
mitted to the DAC, the SYNC line is taken low (PC7). When the
68HC11/68L11 are configured as indicated, data appearing on
the MOSI output is valid on the falling edge of SCK. Serial data
from the 68HC11/68L11 is transmitted in 8-bit bytes with only
eight falling clock edges occurring in the transmit cycle. Data is
transmitted MSB first. To load data to the AD5601/AD5611/
AD5621, PC7 is left low after the first eight bits are transferred
and a second serial write operation is performed to the DAC.
PC7 is taken high at the end of this procedure.
68HC11/
68L11*
AD5601/AD5611/
AD5621*
*ADDITIONAL PINS OMITTED FOR CLARITY
PC7
SCK
MOSI
SYNC
SCLK
SDIN
06853-046
Figure 47. AD5601/AD5611/AD5621 to 68HC11/68L11 Interface
Data Sheet AD5601/AD5611/AD5621
Rev. I | Page 17 of 21
AD5601/AD5611/AD5621 to Blackfin® ADSP-BF53x
Interface
Figure 48 shows a serial interface between the AD5601/AD5611/
AD5621 and the Blackfin ADSP-BF53x microprocessor. The
ADSP-BF53x processor family incorporates two dual-channel
synchronous serial ports, SPORT1 and SPORT0, for serial and
multiprocessor communications. Using SPORT0 to connect to
the AD5601/AD5611/AD5621, the setup for the interface is as
follows: DT0PRI drives the SDIN pin of the AD5601/AD5611/
AD5621, while TSCLK0 drives the SCLK of the part. The SYNC
is driven from TFS0.
ADSP-BF53x* AD5601/AD5611/
AD5621*
*ADDITIONAL PINS OMITTED FOR CLARITY
DT0PRI
TSCLK0
TFS0
SDIN
SCLK
SYNC
06853-047
Figure 48. AD5601/AD5611/AD5621 to Blackfin ADSP-BF53x Interface
AD5601/AD5611/AD5621 to 80C51/80L51 Interface
Figure 49 shows a serial interface between the AD5601/
AD5611/AD5621 and the 80C51/80L51 microcontroller. The
setup for the interface is as follows: TxD of the 80C51/80L51
drives SCLK of the AD5601/AD5611/AD5621, while RxD
drives the serial data line of the part. The SYNC signal is again
derived from a bit programmable pin on the port. In this case,
Port Line P3.3 is used. When data is to be transmitted to the
AD5601/AD5611/AD5621, P3.3 is taken low. The 80C51/80L51
transmit data only in 8-bit bytes; therefore, only eight falling
clock edges occur in the transmit cycle. To load data to the
DAC, P3.3 is left low after the first eight bits are transmitted,
and a second write cycle is initiated to transmit the second byte
of data. P3.3 is taken high following the completion of this
cycle. The 80C51/80L51 output the serial data LSB first. The
AD5601/AD5611/AD5621 require data with the MSB as the
first bit received. The 80C51/80L51 transmit routine must take
this into account.
80C51/80L51* AD5601/AD5611/
AD5621*
*ADDITIONAL PINS OMITTED FOR CLARITY
P3.3
TxD
RxD
SYNC
SCLK
SDIN
06853-048
Figure 49. AD5601/AD5611/AD5621 to 80C51/80L51 Interface
AD5601/AD5611/AD5621 to MICROWIRE Interface
Figure 50 shows an interface between the AD5601/AD5611/
AD5621 and any MICROWIRE-compatible device. Serial data
is shifted out on the falling edge of the serial clock and is
clocked into the AD5601/AD5611/AD5621 on the rising edge
of the SK.
MICROWIRE* AD5601/AD5611/
AD5621*
*ADDITIONAL PINS OMITTED FOR CLARITY
CS
SK
SO
SYNC
SCLK
SDIN
06853-049
Figure 50. AD5601/AD5611/AD5621 to MICROWIRE Interface
AD5601/AD5611/AD5621 Data Sheet
Rev. I | Page 18 of 21
APPLICATIONS INFORMATION
CHOOSING A REFERENCE AS POWER SUPPLY FOR
THE AD5601/AD5611/AD5621
The AD5601/AD5611/AD5621 come in tiny LFCSP and SC70
packages with less than a 100 µA supply current. Because of this,
the choice of reference depends on the application requirements.
For applications with space-saving requirements, the ADR02
is recommended. It is available in an SC70 package and has
excellent drift at 9 ppm/°C (3 ppm/°C in the R-8 package) and
provides very good noise performance at 3.4 µV p-p in the
0.1 Hz to 10 Hz range.
Because the supply current required by the AD5601/AD5611/
AD5621 is extremely low, the parts are ideal for low supply
applications. The ADR395 voltage reference is recommended in
this case. It requires less than 100 µA of quiescent current and
can, therefore, drive multiple DACs in one system, if required.
It also provides very good noise performance at 8 µV p-p in the
0.1 Hz to 10 Hz range.
3-WIRE
SERIAL
INTERFACE
SYNC
SCLK
SDIN
7V
5V
V
OUT
= 0V T O 5V
ADR395
06853-050
AD5601/AD5611/
AD5621
Figure 51. ADR395 as Power Supply to the AD5601/AD5611/AD5621
Some recommended precision references for use as supplies to
the AD5601/AD5611/AD5621 are listed in Tabl e 7.
Table 7. Precision References for the AD5601/AD5611/AD5621
Part No.
Initial
Accuracy
(mV max)
Temp Drift
(ppm/°C max)
0.1 Hz to 10 Hz
Noise (µV p-p typ)
ADR435 ±2 3 (R-8) 8
ADR425 ±2 3 (R-8) 3.4
ADR02
±3
3 (R-8)
10
ADR02 ±3 3 (SC70) 10
ADR395 ±5 9 (TSOT-23) 8
BIPOLAR OPERATION USING THE
AD5601/AD5611/AD5621
The AD5601/AD5611/AD5621 have been designed for single-
supply operation, but a bipolar output range is also possible
using the circuit shown in Figure 52. The circuit in Figure 52
gives an output voltage range of ±5 V. Rail-to-rail operation at
the amplifier output is achievable using an AD820 or OP295 as
the output amplifier.
R2 = 10kΩ
06853-051
+5V
–5V
AD820/
OP295
3-WIRE
SERIAL
INTERFACE
+5V
AD5601/AD5611/
AD5621
10µF 0.1µF
V
DD
V
OUT
R1 = 10kΩ
+5V
Figure 52. Bipolar Operation with the AD5601/AD5611/AD5621
The output voltage for any input code can be calculated as
×−
+
×
×= R1
R2
V
R1
R2
R1D
VV DD
N
DD
OUT 2
where D represents the input code in decimal (0 – 2N).
With VDD = 5 V, R1 = R2 = 10 kΩ
V5
2
10 −
×
=
N
OUT
D
V
This is an output voltage range of ±5 V, with 0x0000 corre-
sponding to a −5 V output and 0x3FFF corresponding to a
+5 V output.
Data Sheet AD5601/AD5611/AD5621
Rev. I | Page 19 of 21
USING THE AD5601/AD5611/AD5621 WITH A
GALVANICALLY ISOLATED INTERFACE
In process control applications in industrial environments,
it is often necessary to use a galvanically isolated interface to
protect and isolate the controlling circuitry from any hazardous
common-mode voltages that might occur in the area where the
DAC is functioning. iCoupler® provides isolation in excess of
2.5 kV. Because the AD5601/AD5611/AD5621 use a 3-wire serial
logic interface, the ADuM1300 3-channel digital isolator
provides the required isolation (see Figure 53). The power
supply to the part also needs to be isolated, which is done by
using a transformer. On the DAC side of the transformer, a 5 V
regulator provides the 5 V supply required for the AD5601/
AD5611/AD5621.
06853-052
V
DD
AD5601/
AD5611/
AD5621
ADuM1300
POWER 10µF 0.1µF
GND
5V
REGULATOR
SCLKV
OA
V
OUT
V
OB
SYNC
V
OC
V
IA
V
IB
V
IC
SCLK
SDI
DATA SDIN
Figure 53. AD5601/AD5611/AD5621 with a Galvanically Isolated Interface
POWER SUPPLY BYPASSING AND GROUNDING
When accuracy is important in a circuit, it is helpful to carefully
consider the power supply and ground return layout on the
board. The PCB containing the AD5601/AD5611/AD5621 must
have separate analog and digital sections, each having its own
area of the board. If the AD5601/AD5611/AD5621 are in a
system where other devices require an AGND-to-DGND
connection, the connection must be made at one point only.
This ground point must be as close as possible to the
AD5601/AD5611/AD5621.
Bypass the power supply to the AD5601/AD5611/AD5621 with
10 μF and 0.1 μF capacitors. The capacitors must be physically
as close as possible to the device, with the 0.1 μF capacitor ideally
right up against the device. The 10 μF capacitors are the tantalum
bead type. It is important that the 0.1 μF capacitor have low
effective series resistance (ESR) and effective series inductance
(ESI), such as in common ceramic types of capacitors. This 0.1 μF
capacitor provides a low impedance path to ground for high
frequencies caused by transient currents due to internal logic
switching.
The power supply line itself must have as large a trace as possible to
provide a low impedance path and reduce glitch effects on the
supply line. Shield clocks and other fast switching digital signals
from other parts of the board by digital ground. Avoid crossover of
digital and analog signals, if possible. When traces cross on oppo-
site sides of the board, ensure that they run at right angles to
each other to reduce feedthrough effects on the board. The best
board layout technique is the microstrip technique, where the
component side of the board is dedicated to the ground plane
only and the signal traces are placed on the solder side. However,
this is not always possible with a two-layer board.
AD5601/AD5611/AD5621 Data Sheet
Rev. I | Page 20 of 21
OUTLINE DIMENSIONS
1.30 BSC
COMPLIANT TO JEDEC STANDARDS MO-203-AB
1.00
0.90
0.70
0.46
0.36
0.26
2.20
2.00
1.80
2.40
2.10
1.80
1.35
1.25
1.15
072809-A
0.10 MAX
1.10
0.80
0.40
0.10
0.22
0.08
3
1 2
4
65
0.65 BSC
COPLANARITY
0.10
SEATING
PLANE
0.30
0.15
Figure 54. 6-Lead Thin Shrink Small Outline Transistor Package [SC70]
(KS-6)
Dimensions shown in millimeters
1.50
1.40
1.30
0.45
0.40
0.35
TOP VI EW
SIDE VIEW
6
1
4
3
BOTTOM VIEW
PIN 1 INDEX
AREA
0.80
0.75
0.70
1.70
1.60
1.50
0.203 REF 0.05 M AX
0.00 M I N
0.65 REF
EXPOSED
PAD
2.10
2.00
1.90
3.10
3.00
2.90
COMPLIANT
TO
JEDEC STANDARDS M O-229
COPLANARITY
0.08
0.20 M I N
0.35
0.30
0.25
FO R P ROPE R CONNECT ION OF
THE EXPOSED PAD, REFER TO
THE P IN CO NFIGURATIO N AND
FUNCTION DESCRIPT IO NS
SECTION OF THIS DATA SHEET.
SEATING
PLANE
PIN 1
IN DICATOR AR E A OPTIO NS
(SEE DETAIL A)
DETAIL A
(JEDEC 95)
08-17-2018-B
PKG-003859
Figure 55. 6-Lead Lead Frame Chip Scale Package [LFCSP]
2.00 × 3.00 mm Body and 0.75 mm Package Height
(CP-6-5)
Dimensions shown in millimeters
Data Sheet AD5601/AD5611/AD5621
Rev. I | Page 21 of 21
ORDERING GUIDE
Model1
Temperature
Range INL Package Description
Package
Option Branding
AD5601BKSZ-500RL7 –40°C to +125°C ±0.5 LSB 6-Lead Thin Shrink Small Outline Transistor Package [SC70] KS-6 D3V
AD5601BKSZ-REEL7 –40°C to +125°C ±0.5 LSB 6-Lead Thin Shrink Small Outline Transistor Package [SC70] KS-6 D3V
AD5601BCPZ-RL7 –40°C to +125°C ±0.5 LSB 6-Lead Lead Frame Chip Scale Package [LFCSP] CP-6-5 89
AD5611AKSZ-500RL7 –40°C to +125°C ±4.0 LSB 6-Lead Thin Shrink Small Outline Transistor Package [SC70] KS-6 D3U
AD5611AKSZ-REEL7 –40°C to +125°C ±4.0 LSB 6-Lead Thin Shrink Small Outline Transistor Package [SC70] KS-6 D3U
AD5611ACPZ-RL7 –40°C to +125°C ±4.0 LSB 6-Lead Lead Frame Chip Scale Package[LFCSP] CP-6-5 8B
AD5611BKSZ-500RL7 –40°C to +125°C ±0.5 LSB 6-Lead Thin Shrink Small Outline Transistor Package [SC70] KS-6 D3T
AD5611BKSZ-REEL7 –40°C to +125°C ±0.5 LSB 6-Lead Thin Shrink Small Outline Transistor Package [SC70] KS-6 D3T
AD5621AKSZ-500RL7 –40°C to +125°C ±6.0 LSB 6-Lead Thin Shrink Small Outline Transistor Package [SC70] KS-6 D3S
AD5621AKSZ-REEL7 –40°C to +125°C ±6.0 LSB 6-Lead Thin Shrink Small Outline Transistor Package [SC70] KS-6 D3S
AD5621ACPZ-RL7 –40°C to +125°C ±6.0 LSB 6-Lead Lead Frame Chip Scale Package[LFCSP] CP-6-5 D3S
AD5621BKSZ-500RL7 –40°C to +125°C ±1.0 LSB 6-Lead Thin Shrink Small Outline Transistor Package [SC70] KS-6 D3R
AD5621BKSZ-REEL7 –40°C to +125°C ±1.0 LSB 6-Lead Thin Shrink Small Outline Transistor Package [SC70] KS-6 D3R
EVAL-AD5621EBZ Evaluation Board
1 Z = RoHS Compliant Part.
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D06853-0-4/19(I)