Philips Semiconductors Linear Products Product specification
MC3410,
MC3410C
10-Bit high-speed multiplying D/A converter
743
August 31, 1994 853-0936 13721
DESCRIPTION
The MC3410 series are 10-bit Multiplying Digital-to-Analog
Converters. They are capable of high-speed performance, and are
used as general-purpose building blocks in cost-effective D/A
systems.
The Philips Semiconductors design provides complete 10-bit
accuracy without laser trimming, and guaranteed monotonicity over
temperature. Segmented current sources, in conjunction with an
R-2R DAC provides the binary weighted currents. The output buffer
amplifier and voltage reference have been omitted to allow greater
speed, lower cost, and maximum user flexibility.
FEATURES
•10-bit resolution and accuracy (±0.05%)
•Guaranteed monotonicity over temperature
•Fast settling time—250ns typical
•Digital inputs are TTL and CMOS compatible
•Wide output voltage compliance range
•High-speed multiplying input slew rate—20mA/µs
•Reference amplifier internally-compensated
•Standard supply voltages +5V and -15V
APPLICATIONS
•Successive approximation A/D converters
•High-speed, automatic test equipment
•High-speed modems
•Waveform generators
•CRT displays
•Strip CHART and X-Y plotters
•Programmable power supplies
•Programmable gain and attenuation
PIN CONFIGURATION
1
2
3
4
5
6
7
8
11
12
13
14
16
15
9
10
VEE
GND
OUTPUT
D1 MSB
D2
D3
D4
D5
VREF +
VREF –
VCC
D10 (LSB)
D9
D8
D7
D6
TOP VIEW
F Package
BLOCK DIAGRAM
CURRENT SWITCHES
LADDER TERMINATORS
45678 9 10 11 12 13
D1D2D3D4D5D6D7D8D9D10
I0
3
R–2R LADDER
VREF(+)
VREF(–)
16
15
REFERENCE
CURRENT
AMPLIFIER
1
VEE GND
BIAS
CIRCUITRY 14
2
VCC
MSB LSB
ORDERING INFORMATION
DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG #
16-Pin Ceramic Dual In-Line Package (CERDIP) 0 to +70°C MC3410F 0582B
16-Pin Ceramic Dual In-Line Package (CERDIP) 0 to +70°C MC3410CF 0582B
Philips Semiconductors Linear Products Product specification
MC3410,
MC3410C
10-Bit high-speed multiplying D/A converter
August 31, 1994 744
ABSOLUTE MAXIMUM RATINGS
TA=+25°C unless otherwise noted
SYMBOL PARAMETER RATING UNIT
VCC Power supply +7.0 VDC
VEE -18 VDC
VIDigital input voltage +15 VDC
VOApplied output voltage 0.5, -5.0 VDC
IREF(16) Reference current 2.5 mA
VREF Reference amplifier inputs VCC, VEE VDC
VREF(D) Reference amplifier differential inputs 0.7 VDC
TAOperating ambient temperature range
MC3410, 3410C 0 to +70 °C
TJJunction temperature, ceramic
package +150 °C
PDMaximum power dissipation,
TA=25°C (still-air)1
F package 1190 mW
NOTES:
1. Derate above 25°C, at the following rates:
F package at 9.5mW/°C
Philips Semiconductors Linear Products Product specification
MC3410,
MC3410C
10-Bit high-speed multiplying D/A converter
August 31, 1994 745
ELECTRICAL CHARACTERISTICS
VCC=+5.0VDC, VEE=-15DC, VREF
R16 =2.0mA, all digital inputs at high logic level. MC3410 Series: TA=0°C to +70°C, unless otherwise noted.
SYMBOL
PARAMETER
TEST CONDI-
TIONS
MC3410 MC3410C
UNIT
SYMBOL
PARAMETER
TEST CONDI-
TIONS
Min Typ Max Min Typ Max
UNIT
Er
Relative accuracy
TA=25°C±0.05 ±0.1 %
Er
Relative accuracy
(error relative to full-scale IO)
1/4 1/2 LSB
TCErRelative accuracy drift
(relative to full-scale IO)2.5 2.5 ppm/°C
Monotonicity Over temperature 10 10 Bits
tSSettling time to within ± LSB
(all bits LOW-to-HIGH) TA=25°C 250 250 ns
tPLH
tPHL Propagation delay time TA=25°C35
20 35
20 ns
TCIOOutput full scale current drift 60 70 ppm/°C
VIH
Digital input logic levels (all bits)
HIGH-level, Logic “1”
LOW-level, Logic “0” 2.0 0.8 2.0 0.8 VDC
IIH
IIL
Digital input current (all bits)
HIGH-level, VIH=5.5V
LOW-level, VIL=0.8V -0.05 +.04
-0.4 -0.05 +.04
-0.4 mA
IREF(15) Reference input bias current (Pin 15) -1.0 -5.0 -1.0 -5.0 µA
IOR Output current range 4.0 5.0 4.0 5.0 mA
IOH Output current (all bits high) VREF=2.000V,
R16=1000Ω3.8 3.996 4.2 3.8 3.996 4.2 mA
IOL Output current (all bits low) TA=25°C 0 2.0 0 4.0 µA
VOOutput voltage compliance TA=25°C-2.5
+0.2 -2.5
+0.2 VDC
SR IREF Reference amplifier slew rate 20 20 mA/µs
ST IREF Reference amplifier settling time 0 to 4.0mA, ±0.1% 2.0 2.0 µs
PSRR(-) Output current power supply sensitivity 0.003 0.01 0.003 0.02 %/%
COOutput capacitance VO=0 25 25 pF
CIDigital input capacitance
(all bits high) 4.0 4.0 pF
ICC
IEE
Power supply current
(all bits low) -11.4 +18
-20 -11.4 +18
-20 mA
VCC
VEE
Power supply voltage range TA=25°C +4.75
-14.25 +5.0
-15 +5.25
-15.75 +4.75
-14.25 +5.0
-15 +5.25
-15.75 VDC
Power consumption
(all bits low)
(all bits high) 220
200 380 220
200 380 mW
Philips Semiconductors Linear Products Product specification
MC3410,
MC3410C
10-Bit high-speed multiplying D/A converter
August 31, 1994 746
Figure 1. Output Current vs Output Compliance Voltage
4.0
3.0
2.0
1.0
0
–1.0
–5 –3 –1 0 1 3 5
OUTPUT CFURRENT (mA)
VCC = +5.0V
VEE = -15.0V
TA = 25oC
IREF = 2mA
COMPLIANCE VOLTAGE (VOLTS)
Figure 2. Maximum Output Compliance
Voltage vs Temperature
4.0
3.0
2.0
1.0
0
–1.0
–2.0
–3.0
–4.0
–75 –50 –25 0 25 50 75 100 125
TA = (oC)
+VCC = +5V
–VEE = –15V
IREF = 2mA
OUTPUT COMPLIANCE VOLTAGE (VOLTS)
Figure 3. Power Supply Current vs Temperature
+VCC = +5V
–VEE = –15V
IREF = 2mA
+ICC
IEE
–75 –50 –25 0 25 50 75 100 125
TA (oC)
13
12
11
10
4
3
2
1
0
I , POWER SUPPLY CURRENT (mA)
CC
Figure 4. Reference Amplifier Frequency Response
18.0
16.0
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0
–2.0
–4.0
–6.0
–8.0
–10
–120.1 0.2 0.3 0.5 1.0 2.0 3.0 5.0 10
SMALL SIGNAL BW
ro = 100
Ω
VREF (+) = 50 mV p–p
CENTERED AT + 200mV
RELATIVE OUTPUT (dB)
I, FREQUENCY (MHz)
B CURVE R15 = R16 = 1.0k
VREF (–) = 0V
A CURVE
LARGE SIGNAL BW
ro = 200
Ω
VREF (+) = 2 Vp–p
CENTERED AT + 1.0V
CIRCUIT DESCRIPTION
The MC3410 consists of four segment current sources which
generate the two most significant bits (MSBs), and an R-2R DAC
implemented with ion-implanted resistors for scaling the remaining
eight least significant bits (LSBs) (See Figure 5). This approach
provides complete 10-bit accuracy without trimming.
The individual bit currents are switched ON or OFF by fully
differential current switches. The switches use current steering for
speed.
An on-chip high-slew reference current amplifier drives the R-2R
ladder and segment decoder. The currents are scaled in such a way
that, with all bits on, the maximum output current is two times
1023/1024 of the reference amplifier current, or nominally 3.996mA
for a 2.000mA reference input current. The reference amplifier
allows the user to provide a voltage input. Out-board resistor R16
(see Figure 6) converts this voltage to a usable current. A current
mirror doubles this reference current and feeds it to the segment
decoder and resistor ladder. Thus, for a reference voltage of 2.0V
and a 1kΩ resistor tied to Pin 16, the full-scale current is
approximately 4.0mA. This relationship will remain regardless of the
reference voltage polarity.
Connections for a positive reference voltage are shown in Figure 6a.
For negative reference voltage inputs, or for bipolar reference
voltage inputs in the multiplying mode, R15 can be tied to a negative
voltage corresponding to the minimum input level. For a negative
reference input, R16 should be grounded (Figure 6b). In addition, the
negative voltage reference must be at least 3V above the VEE
supply voltage for best operation. Bipolar input signals may be
handled by connecting R16 to a positive voltage equal to the peak
positive input level at Pin 15.
Philips Semiconductors Linear Products Product specification
MC3410,
MC3410C
10-Bit high-speed multiplying D/A converter
August 31, 1994 747
When a DC reference voltage is used, capacitive bypass to ground
is recommended. The 5V logic supply is not recommended as a
reference voltage. If a well regulated 5.0V supply, which drives logic,
is to be used as the reference, R16 should be decoupled by
connecting it to the +5.0V logic supply through another resistor and
bypassing the junction of the two resistors with a 0.1µF capacitor to
ground.
The reference amplifier is internally-compensated with a 10pF
feed-forward capacitor, which gives it its high slew rate and fast
settling time. Proper phase margin is maintained with all possible
values of R16 and reference voltages which supply 2.0mA reference
current into Pin 16. The reference current can also be supplied by a
high impedance current source of 2.0mA. As R16 increases, the
bandwidth of the amplifier decreases slightly and settling time
increases. For a current source with a dynamic output impedance of
1.0MΩ, the bandwidth of the reference amplifier is approximately
half what it is in the case of R16=1.0kΩ, and settling time is ≈10µs.
The reference amplifier phase margin decreases as the current
source value decreases in the case of a current source reference,
so that the minimum reference current supplied from a current
source is 0.5mA for stability.
OUTPUT VOLTAGE COMPLIANCE
The output voltage compliance ranges from -2.5 to +0.2V. As shown
in Figure 2, this compliance range is nearly constant over
temperature. At the temperature extremes, however, the compliance
voltage may be reduced if VEE>-15V.
ACCURACY
Absolute accuracy is a measure of each output current level with
respect to its intended value. It is dependent upon relative accuracy
and full-scale current drift. Relative accuracy, or linearity, is the
measure of each output current with respect to its intended fraction
of the full-scale current. The relative accuracy of the MC3410 is
fairly constant over temperature due to the excellent temperature
tracking, of the implanted resistors. The full-scale current from the
reference amplifier may drift with temperature causing a change in
the absolute accuracy. However, the MC3410 has a low full-scale
current drift with temperature.
The MC3410 are accurate to within ±0.05% at 25°C with a reference
current of 2.0mA on Pin 16.
Figure 5. MC3410 Equivalent Circuit
CODE SELECTED 0111110011
R
MSB LSB
(4) (5) (6) (7) (8) (9) (10) (11) (12) (13)
GND
(2)
(3)
(INTERNAL)
2R
SEGMENT
DECODER
(15)
(16)
+
–
R
2R
R
2R
R
2R
R
2R
R
2R 2R 2R
2R1R1R1R1R1
VEE (1)
VREF
+
–
VBIAS
IOUT
D1D2D3D4D5D6D7D8D9D10
Philips Semiconductors Linear Products Product specification
MC3410,
MC3410C
10-Bit high-speed multiplying D/A converter
August 31, 1994 748
Figure 6. Basic Connections
a. Positive Reference Voltage
a. Negative Reference Voltage
14 16 15
3
2
1
3410
D1 THROUGH D10
VR (+)
VCC
VEE
RT
R15
R16
IO
NOTES:
R16 + RT = R15 = RREF
RT < <R16
IO F.S. = 2 IR = VREF/RREF
NOTES:
R15 + RT = R16
RT < <R15
IVREF ≥ RVEE + 3V
15
13
2
1
3410
D1 THROUGH D10
VR (–)
VEE
RT
R15
R16
IO
VCC
MONOTONICITY
The MC3410 and MC3410C are guaranteed monotonic over
temperature. This means that for every increase in the input digital
code, the output current either remains the same or increases but
never decreases. In the multiplying mode, where reference input
current will vary, monotonicity can be assured if the reference input
current remains above 0.5mA.
SETTLING TIME
The worst-case switching condition occurs when all bits are
switched “on,” which corresponds to a low-to-high transition for all
bits. This time is typically 250ns for the output to settle to within
±1/2LSB for 10-bit accuracy, and 200ns for 8-bit accuracy. The
turn-off time is typically 120ns. These times apply when the output
swing is limited to a small (<0.7V) swing and the external output
capacitance is under 25pF.
The major carry (MSB off-to-on, all others on-to-off) settles in
approximately the same time as when all bits are switched off-to-on.
If a load resistor of 625Ω is connected to ground, allowing the output
to swing to -2.5V, the settling time increases to 1.5µs.
Extra care must be taken in board layout as this is usually the
dominant factor in satisfactory test results when measuring settling
time. Short leads, 100µF supply bypassing, and minimum scope
lead length are all necessary.
A typical test setup for measuring settling time is shown in Figure 7.
The same setup for the most part can be used to measure the slew
rate of the reference amplifier (Figure 9) by tying all data bits high,
pulsing the voltage reference input between 0 and 2V, and using a
500Ω load resistor RL.
Philips Semiconductors Linear Products Product specification
MC3410,
MC3410C
10-Bit high-speed multiplying D/A converter
August 31, 1994 749
Figure 7. Settling Time
4
5
6
7
8
9
10
11
12
13
14
1
16
15
3
2
1k
1k
50
+2VDC
500
VCC
VEE
RL
VO
CO ≤ 25pF
VI
0.1µF
0.1µF
0.1µF
MC3410
2.4V
0.4V
0.5V
0tS — 250ns TYPICAL
TO ± 1/2 LSB
RISE AND FALL TIMES ≤ 10ns
VO
VI
USE RL TO GND FOR TURN-OFF MEASUREMENT
FOR SETTLING TIME
MEASUREMENT.
(ALL BIT SWITCHED
LOW TO HIGH)
1.4V
Figure 8. Propagation Delay Time
4
5
6
7
8
9
10
11
12
13
14
1
16
15
3
2
1k
1k
50
+2VDC
20
VCC
VEE
RL
VO
MC3410
VI
0.1µF
0.1µF
0.1µF
2.4V
0.4V
–80mV
0V
tPLH
TO ± 1/2 LSB
RISE AND FALL TIMES ≤ 10ns
VO
VI
tPHL
FOR PROPAGATION
DELAY TIME
Philips Semiconductors Linear Products Product specification
MC3410,
MC3410C
10-Bit high-speed multiplying D/A converter
August 31, 1994 750
Figure 9. Reference Amplifier Settling Time and Slew Rate
TO ±0.1%
4
5
6
7
8
9
10
11
12
13
14
1
16
15
3
2
1k
1k
500
VCC
VEE
RL
VO
≤ 25pF
MC3410
0.1µF
0.1µF
0.1µF
VREF (+) 2V
0
2.0V
0
0
0.5V
VO
VREF (+)
SLEW RATE
tS = 2µs TYPICAL
NOTE:
Use RL = 20Ω to GND for slew rate measurement.
Figure 10. Interfacing 10-Bit DAC With 8-Bit Microprocessor
CONTROL
SIGNAL
7
6
5
4
3
2
1
0
8-BIT
LATCH
LS373 10-BIT
DAC
(MC3410)
2-BIT
LATCH
1/2 LS375
2-BIT
LATCH
1/2 LS375
OUTPUT
FROM µP
µP
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
E0-2
Q2
Q0
Q2Q3
E2-3
BUS
OE
E2
E1
ÉÉÉÉ
ÉÉÉÉ
ÉÉÉÉ
ÉÉÉÉ
ÉÉÉÉÉ
ÉÉÉÉÉ
ÉÉÉÉÉ
ÉÉÉÉÉ
ÉÉ
ÉÉ
ÉÉ
ÉÉ
DATA
E2
E1
D1 - D2D3 - D10
