General Description
The MAX4521/MAX4522/MAX4523 are quad, low-volt-
age, single-pole/single-throw (SPST) analog switches.
On-resistance (100Ωmax) is matched between switch-
es to 4Ωmax, and is flat (12Ωmax) over the specified
signal range. Each switch can handle rail-to-rail analog
signals. The off-leakage current is only 1nA at +25°C
and 10nA at +85°C.
The MAX4521 has four normally closed (NC) switches,
and the MAX4522 has four normally open (NO) switch-
es. The MAX4523 has two NC switches and two NO
switches.
These CMOS switches can operate with dual power
supplies ranging from ±2V to ±6V or a single supply
between +2V and +12V. They are fully specified for sin-
gle +2.7V operation.
All digital inputs have +0.8V and +2.4V logic thresh-
olds, ensuring TTL/CMOS-logic compatibility when
using ±5V or a single +5V supply.
Applications
Battery-Operated Equipment
Data Acquisition
Test Equipment
Avionics
Audio Signal Routing
Networking
Features
♦+2V to +12V Single Supply
±2V to ±6V Dual Supplies
♦100ΩSignal Paths with ±5V Supplies
♦Low Power Consumption, <1µW
♦4 Separately Controlled SPST Switches
♦Rail-to-Rail Signal Handling
♦Pin Compatible with Industry-Standard
DG211/DG212/DG213
♦>2kV ESD Protection per Method 3015.7
♦TTL/CMOS-Compatible Inputs with ±5V or
Single +5V Supply
MAX4521/MAX4522/MAX4523
Quad, Low-Voltage, SPST Analog Switches
________________________________________________________________ Maxim Integrated Products 1
SWITCHES SHOWN FOR LOGIC "0" INPUT
DIP/SO/QSOP/TSSOP
MAX4522
LOGIC SWITCH
0
1
OFF
ON
TOP VIEW
DIP/SO/QSOP/TSSOP
MAX4521
LOGIC SWITCH
0
1
ON
OFF
DIP/SO/QSOP/TSSOP
MAX4523
LOGIC SWITCHES
1, 4
0
1
OFF
ON
SWITCHES
2, 3
ON
OFF
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
IN2
COM2
NC2
V+
V-
NO1
COM1
IN1
MAX4523 N.C.
NC3
COM3
IN3
IN4
COM4
NO4
GND
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
IN2
COM2
NC2
V+
V-
NC1
COM1
IN1
MAX4521 N.C.
NC3
COM3
IN3
IN4
COM4
NC4
GND
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
IN2
COM2
NO2
V+
V-
NO1
COM1
IN1
MAX4522 N.C.
NO3
COM3
IN3
IN4
COM4
NO4
GND
N.C. = NOT CONNECTED
Pin Configurations/Functional Diagrams/Truth Tables
19-1136; Rev 6; 7/07
Ordering Information
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
**EP = Exposed pad.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Pin Configurations continued at end of data sheet.
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX4521CPE
0°C to +70°C 16 Plastic DIP
P16-1
MAX4521CSE
0°C to +70°C 16 Narrow SO
S16-2
MAX4521CEE
0°C to +70°C
16 QSOP E16-4
MAX4521CUE
0°C to +70°C
16 TSSOP
U16-2
MAX4521CGE
0°C to +70°C
16 QFN-EP**
G1644-1
MAX4521C/D
0°C to +70°C
Dice* —
MAX4521/MAX4522/MAX4523
Quad, Low-Voltage, SPST Analog Switches
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—Dual Supplies
(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, TA= TMIN to TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
Note 1: Signals on NC_, NO_, COM_, or IN_ exceeding V+ or V- are clamped by internal diodes. Limit forward-diode current to maxi-
mum current rating.
Note 2: All leads are soldered or welded to PC boards.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Voltages Referenced to GND
V+.....................................................................-0.3V to +13.0V
V- .....................................................................-13.0V to +0.3V
V+ to V- ............................................................-0.3V to +13.0V
All Other Pins (Note 1) ..........................(V- - 0.3V) to (V+ + 0.3V)
Continuous Current into Any Terminal..............................±10mA
Peak Current into Any Terminal
(pulsed at 1ms,10% duty cycle)...................................±20mA
ESD per Method 3015.7 ..................................................>2000V
Continuous Power Dissipation (TA= +70°C) (Note 2)
Plastic DIP (derate 10.53mW/°C above +70°C) ..........842mW
Narrow SO (derate 8.70mW/°C above +70°C) ............696mW
QSOP (derate 9.52mW/°C above +70°C)....................762mW
CERDIP (derate 10.00mW/°C above +70°C)...............800mW
TSSOP (derate 6.7mW/°C above +70°C) ....................457mW
QFN (derate 16.9mW/°C above +70°C) ....................1349mW
Operating Temperature Ranges
MAX452_C_E ......................................................0°C to +70°C
MAX452_E_E ...................................................-40°C to +85°C
MAX452_MJE ................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
(Note 4)
V+ = 5.5V, V- = -5.5V,
VCOM_ = ±4.5V
V+ = 5.5V, V- = -5.5V,
VCOM_ = ±4.5V, VN_ = 4.5V
V+ = 5V, V- = -5V,
VCOM_ = ±3V, ICOM_ = 1mA
V+ = 5.5V, V- = -5.5V,
VCOM_ = 4.5V, VN_ = ±4.5V
V+ = 5V, V- = -5V,
VCOM_ = ±3V, ICOM_ = 1mA
V+ = 5V, V- = -5V,
VCOM_ = ±3V, ICOM_ = 1mA
CONDITIONS
nA
-200 200
ICOM_(ON)
COM_ On-Leakage Current
(Note 7) -20 20
-2 0.01 2
nA
-100 100
ICOM_(OFF)
COM_ Off-Leakage Current
(Note 7) -10 10
-1 0.01 1
nA
-100 100
INO_(OFF),
INC_(OFF)
NO_, NC_ Off-Leakage Current
(Note 7) -10 10
-1 0.01 1
VV- V+
VCOM_, VNO_,
VNC_
Analog Signal Range
Ω
15
RFLAT(ON)
COM_ to NO_, COM_ to NC_
On-Resistance Flatness
(Note 6)
712
Ω
6
ΔRON
COM_ to NO_, COM_ to NC_
On-Resistance Match Between
Channels (Note 5)
65 100 Ω
125
RON
COM_ to NO_, COM_ to NC_
On-Resistance
14
UNITS
MIN TYP MAX
(Note 3)
SYMBOLPARAMETER
C, E, M
M
C, E
+25°C
M
C, E
C, E, M
+25°C
M
+25°C
C, E, M
+25°C
C, E, M
+25°C
C, E
+25°C
TA
ANALOG SWITCH
±
±
MAX4521/MAX4522/MAX4523
Quad, Low-Voltage, SPST Analog Switches
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, TA= TMIN to TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
CONDITIONS
C, E, M
C, E, M
V0.8 1.6VIN_L
IN_ Input Logic Threshold Low
V1.6 2.4VIN_H
IN_ Input Logic Threshold High
UNITS
MIN TYP MAX
(Note 3)
SYMBOLPARAMETER TA
C, E, MVIN_ = 0.8V or 2.4V µA-1 0.03 1IINH_, IINL_
IN_ Input Current Logic High
or Low
+25°C 45 80
Turn-On Time tON VCOM_ = ±3V, V+ = 4.5V,
V- = -4.5V, Figure 1 C, E, M 100 ns
+25°C 15 30
Turn-Off Time tOFF VCOM_ = ±3V, V+ = 4.5V,
V- = -4.5V, Figure 1 C, E, M 40 ns
Break-Before-Make Time Delay
(MAX4523 only) tBBM VCOM_ = ±3V, V+ = 5.5V,
V- = -5.5V, Figure 2 +25°C 520 ns
Charge Injection (Note 4) QCL= 1nF, VNO_ = 0, RS= 0Ω,
Figure 3 +25°C 15pC
NO_, NC_ Off-Capacitance CN_(OFF) VNO_ = GND, f = 1MHz,
Figure 6 +25°C 2pF
COM_ Off-Capacitance CCOM_(OFF) VCOM_ = GND, f = 1MHz,
Figure 6 +25°C 2pF
COM_ On-Capacitance CCOM_(ON) VCOM_ = VNO_ = GND,
f = 1MHz, Figure 7 +25°C 5pF
Off-Isolation (Note 8) VISO
RL= 50Ω, CL= 15pF,
VN_ = 1VRMS, f = 100kHz,
Figure 4
+25°C < -90 dB
Power-Supply Range V+, V- C, E, M -6 6 V
-1 0.05 1
V+ Supply Current I+ V+ = 5.5V, all VIN_ = 0 or V+ C, E, M -1 1 µA
+25°C -1 0.05 1
V- Supply Current I- V- = -5.5V C, E, M -1 1 µA
+25°C
Channel-to-Channel Crosstalk
(Note 9) VCT
RL= 50Ω, CL= 15pF,
VN_ = 1VRMS, f = 100kHz,
Figure 5
+25°C < -90 dB
POWER SUPPLY
LOGIC INPUT
SWITCH DYNAMIC CHARACTERISTICS
MAX4521/MAX4522/MAX4523
Quad, Low-Voltage, SPST Analog Switches
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS—Single +5V Supply
(V+ = +4.5V to +5.5V, V- = 0V, TA= TMIN to TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
+25°C
(Note 4)
CONDITIONS
C, E, M
125 200
V0V+
VCOM_, VNO_,
VNC_
Analog Signal Range
UNITS
MIN TYP MAX
(Note 3)
SYMBOLPARAMETER TA
COM_ to NO_, COM_ to NC_
On-Resistance RON V+ = 4.5V, VCOM_ = 3.5V,
ICOM_ = 1mA C, E, M 250 Ω
+25°C 28
COM_ to NO_, COM_ to NC_
On-Resistance Match Between
Channels (Note 5)
ΔRON V+ = 5V, VCOM_ = 3.5V,
ICOM_ = 1mA C, E, M 10 Ω
+25°C -1 0.01 1
C, E -10 10
NO_, NC_ Off-Leakage Current
(Notes 7, 10)
INO_(OFF),
INC_(OFF)
V+ = 5.5V; VCOM_ = 1V, 4.5V;
VN_ = 4.5V, 1V M-100 100
nA
+25°C -1 0.01 1
C, E -10 10
COM_ Off-Leakage Current
(Notes 7, 10) ICOM_(OFF) V+ = 5.5V; VCOM_ = 1V, 4.5V;
VN_ = 4.5V, 1V M-100 100
nA
+25°C -2 0.01 2
C, E, -20 20
COM_ On-Leakage Current
(Notes 7, 10) ICOM_(ON) V+ = 5.5V; VCOM_ = 4.5V, 1V
M-200 200
nA
IN_ Input Logic Threshold High VIN_H C, E 1.6 2.4 V
IN_ Input Logic Threshold Low VIN_L C, E 0.8 1.6 V
IN_ Input Current Logic High
or Low IINH_, IINL_ VIN_ = 0.8V or 2.4V C, E -1 0.03 1 µA
+25°C 60 100
Turn-On Time tON VCOM_ = 3V, V+ = 4.5V,
Figure 1 C, E, M 150 ns
+25°C 20 50
Turn-Off Time tOFF VCOM_ = 3V, V+ = 4.5V,
Figure 1 C, E, M 75 ns
+25°C 10 30
Break-Before-Make Time Delay
(MAX4523 only) tBBM VCOM_ = 3V, V+ = 5.5V,
Figure 2 ns
+25°C -1 0.05 1
V+ Supply Current I+ V+ = 5.5V, all VIN_ = 0 or V+ C, E, M -1 1 µA
+25°C -1 0.05 1
V- Supply Current I- V- = 0 C, E, M -1 1 µA
Charge Injection (Note 4) QCL= 1nF, VNO_ = 0, RS= 0Ω,
Figure 3 +25°C 15pC
POWER SUPPLY
SWITCH DYNAMIC CHARACTERISTICS
LOGIC INPUT
ANALOG SWITCH
MAX4521/MAX4522/MAX4523
Quad, Low-Voltage, SPST Analog Switches
_______________________________________________________________________________________ 5
Note 3: The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Note 4: Guaranteed by design.
Note 5: ΔRON = ΔRON(MAX) - ΔRON(MIN).
Note 6: Resistance flatness is defined as the difference between the maximum and minimum on-resistance values, as measured
over the specified analog signal range.
Note 7: Leakage parameters are 100% tested at maximum rated temperature, and guaranteed by correlation at TA= +25°C.
Note 8: Off-Isolation = 20log10 [ VCOM_ / (VNC_ or VNO_) ], VCOM_ = output, VNC_ or VNO_ = input to off switch.
Note 9: Between any two switches.
Note 10: Leakage testing for single-supply operation is guaranteed by testing with dual supplies.
ELECTRICAL CHARACTERISTICS—Single +3V Supply
(V+ = +2.7V to +3.6V, V- = 0V, TA= TMIN to TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
+25°C
(Note 4)
COM_ to NO_, COM_ to NC_
On-Resistance RON V+ = 2.7V, VCOM_ = 1.0V,
ICOM_ = 0.1mA C, E, M 600 Ω
IN_ Input Logic Threshold High VIN_H C, E 1.6 2.4 V
IN_ Input Logic Threshold Low
CONDITIONS
C, E, M
VIN_L
260 500
V0V+
VCOM_, VNO_,
VNC_
Analog Signal Range
C, E 0.8 1.6 V
IN_ Input Current Logic High
or Low IINH_, IINL_ VIN_ = 0.8V or 2.4V C, E -1 0.03 1 µA
+25°C 120 250
Turn-On Time tON VCOM_ = 1.5V, V+ = 2.7V,
Figure 1 C, E, M 300 ns
+25°C 40 80
Turn-Off Time tOFF VCOM_ = 1.5V, V+ = 2.7V,
Figure 1 C, E, M 100 ns
+25°C 15 50
Break-Before-Make Time Delay
(MAX4523 only) tBBM VCOM_ = 1.5V, V+ = 3.6V,
Figure 2 ns
+25°C -1 0.05 1
V+ Supply Current
UNITS
MIN TYP MAX
(Note 3)
SYMBOLPARAMETER
I+ V+ = 3.6V, all VIN_ = 0 or V+ C, E, M -1 1 µA
+25°C -1 0.05 1
V- Supply Current I- V- = 0 C, E, M -1 1 µA
TA
Charge Injection Q
CL= 1nF, VNO_ = 0, RS= 0Ω,
Figure 3
+25°C 0.5 5 pC
ANALOG SWITCH
LOGIC INPUT
SWITCH DYNAMIC CHARACTERISTICS (Note 4)
POWER SUPPLY
MAX4521/MAX4522/MAX4523
Quad, Low-Voltage, SPST Analog Switches
6 _______________________________________________________________________________________
Typical Operating Characteristics
(V+ = +5V, V- = -5V, GND = 0, TA = +25°C, unless otherwise noted.)
100
0
-5 -3 1 5
ON-RESISTANCE vs. VCOM
(DUAL SUPPLIES)
20
80
MAX4521/2/3-TOC01
VCOM (V)
RON (Ω)
-1 3-4 -2 204
60
160
180
140
120
40
V+, V- = 2.0V
V+, V- = 3.0V
V+, V- = 4.0V
V+, V- = 5.0V
80
30
-5 -3 1 5
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (DUAL SUPPLIES)
40
70
MAX4521/2/3-TOC02
VCOM (V)
RON (Ω)
-1 3-4 -2 204
60
110
100
90
50
TA = +125°C
TA = +85°C
TA = +25°C
TA = 0°C
TA = -55°C
250
0
01 3 5
ON-RESISTANCE vs. VCOM
(SINGLE SUPPLY)
50
200
MAX4521/2/3-TOC03
VCOM (V)
RON (Ω)
24
150
350
300
100
V+ = 2.7V
V+ = 3.3V
V+ = 5.0V
160
60
01 3 5
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (SINGLE SUPPLY)
80
140
MAX4521/2/3-TOC04
VCOM (V)
RON (Ω)
24
120
200
180
100
TA = +25°C
TA = +125°C
TA = +85°C
TA = 0°C
TA = -55°C
200
0
24 8 12
TURN-ON/OFF TIME
vs. SUPPLY VOLTAGE
40
160
tON
tOFF
MAX4521/2/3-TOC07
tON, tOFF (ns)
V+ (V)
610371159
120
80
180
20
140
100
60
10n
0.1p
-55 -25 0 25 75
ON- AND OFF-LEAKAGE CURRENT
vs. TEMPERATURE
1p
1n
MAX4521/2/3-TOC05
TEMPERATURE (°C)
LEAKAGE CURRENT (A)
50 100 125
100p
10p
ON LEAKAGE
OFF LEAKAGE
2
-2
-5 -3 1 5
CHARGE INJECTION
vs. VCOM
1
MAX4521/2/3-TOC06
VCOM (V)
Q (pC)
-1 3-4 -2 204
0
-1
V+ = +5V
V- = 0V
V+ = +5V
V- = -5V
100
0
-55 -25 75
TURN-ON/OFF TIME
vs. TEMPERATURE
20
80
tON
tOFF
MAX4521/2/3-TOC08
TEMPERATURE (°C)
tON, tOFF (ns)
25 500 125100
60
40
90
10
70
50
30
1
0.00001
-55 -25 75
POWER-SUPPLY CURRENT
vs. TEMPERATURE
0.0001
0.1 I+
I-
MAX4521/2/3-TOC09
TEMPERATURE (°C)
I+, I- (μA)
25 500 125100
0.01
0.001
MAX4521/MAX4522/MAX4523
Quad, Low-Voltage, SPST Analog Switches
_______________________________________________________________________________________ 7
0
-10
-90
0.01 0.1 1 10 100 300
FREQUENCY RESPONSE
-80
-70
MAX4521/2/3-TOC11
FREQUENCY (MHz)
LOSS (dB)
PHASE (DEGREES)
-50
-60
-40
-20
-30
5
0
-40
-35
-30
-20
-25
-15
-5
-10
INSERTION LOSS
50Ω IN/OUT
OFF-ISOLATION
ON-PHASE
Typical Operating Characteristics (continued)
(V+ = +5V, V- = -5V, GND = 0, TA= +25°C, unless otherwise noted.)
Pin Description
*NO_ (or NC_) and COM_ pins are identical and interchangeable. Either may be considered as an input or output; signals pass
equally well in either direction.
PIN
MAX4521 MAX4522 MAX4523
TSSOP/SO
QFN
TSSOP/SO
QFN
TSSOP/SO
QFN
NAME FUNCTION
1, 16, 9, 8
15, 14, 7, 6 1, 16, 9, 8 15, 14, 7, 6 1, 16, 9, 8 15, 14, 7, 6
IN1–1N4 Logic-Control Digital Input
2, 15, 10, 7
16, 13, 8, 5 2, 15, 10, 7 16, 13, 8, 5 2, 15, 10, 7 16, 13, 8, 5 COM1–COM4
Analog Switch Common* Terminals
3, 14, 11, 6
1, 12, 9, 4
————
NC1–NC4
Analog Switch Normally Closed
Terminals
——
3, 14, 11, 6 1, 12, 9, 4
——
NO1–NO4
Analog Switch Normally Open
Terminals
— — — — 3, 6 1, 4
NO1, NO4
Analog Switch Normally Open
Terminals
— — — — 14, 11 12, 9
NC2, NC3
Analog Switch Normally Closed
Terminals
424242 V-
Negative Analog Supply-Voltage
Input. Connect to GND for single
supply operation.
535353GND
Ground. Connect to digital ground.
(Analog signals have no ground
reference; they are limited to V+
and V-.)
12 10 12 10 12 10 N.C. No Connection. Not internally
connected.
13 11 13 11 13 11 V+
Positive Analog and Digital Supply-
Voltage Input. Internally connected
to substrate.
— EP — EP — EP EP Exposed Pad. Connect EP to V+.
MAX4521/MAX4522/MAX4523
Applications Information
Power-Supply Considerations
Overview
The MAX4521/MAX4522/MAX4523 construction is typi-
cal of most CMOS analog switches. They have three
supply pins: V+, V-, and GND. V+ and V- are used to
drive the internal CMOS switches, and they set the lim-
its of the analog voltage on any switch. Reverse ESD-
protection diodes are internally connected between
each analog-signal pin and both V+ and V-. If any ana-
log signal exceeds V+ or V-, one of these diodes con-
ducts. During normal operation these reverse-biased
ESD diodes leak, forming the only current drawn from
V+ or V-.
Virtually all the analog leakage current is through the
ESD diodes. Although the ESD diodes on a given sig-
nal pin are identical and therefore fairly well balanced,
they are reverse biased differently. Each is biased by
either V+ or V- and the analog signal. This means their
leakages vary as the signal varies. The difference in the
two diode leakages from the signal path to the V+ and
V- pins constitutes the analog-signal-path leakage cur-
rent. All analog leakage current flows to the supply ter-
minals, not to the other switch terminal. This explains
how both sides of a given switch can show leakage
currents of the same or opposite polarity.
There is no connection between the analog-signal
paths and GND. The analog-signal paths consist of an
N-channel and P-channel MOSFET with their sources
and drains paralleled, and their gates driven out of
phase to V+ and V- by the logic-level translators.
V+ and GND power the internal logic and logic-level
translators, and set the input logic thresholds. The
logic-level translators convert the logic levels to
switched V+ and V- signals to drive the gates of the
analog switches. This drive signal is the only connec-
tion between the logic supplies and the analog sup-
plies. V+ and V- have ESD-protection diodes to GND.
The logic-level inputs and output have ESD protection
to V+ and to GND.
Increasing V- has no effect on the logic-level thresh-
olds, but it does increase the drive to the P-channel
switches, reducing their on-resistance. V- also sets the
negative limit of the analog-signal voltage.
The logic-level thresholds are CMOS/TTL compatible
when V+ = +5V. The threshold increases slightly as V+
is raised, and when V+ reaches +12V, the level thresh-
old is about 3.1V. This is above the TTL output high-
level minimum of 2.8V, but still compatible with CMOS
outputs.
Bipolar Supplies
The MAX4521/MAX4522/MAX4523 operate with bipolar
supplies between ±2V and ±6V. The V+ and V- sup-
plies need not be symmetrical, but their sum cannot
exceed the absolute maximum rating of 13.0V. Do not
connect the MAX4521/MAX4522/MAX4523 V+ to +3V,
and then connect the logic-level-input pins to TTL
logic-level signals. TTL logic-level outputs in excess
of the absolute maximum ratings can damage the
part and/or external circuits.
Caution: The absolute maximum V+ to V- differential
voltage is 13.0V. Typical ±6V or 12V supplies with
±10% tolerances can be as high as 13.2V. This voltage
can damage the MAX4521/MAX4522/MAX4523. Even
±5% tolerance supplies may have overshoot or noise
spikes that exceed 13.0V.
Single Supply
The MAX4521/MAX4522/MAX4523 operate from a
single supply between +2V and +12V when V- is con-
nected to GND. All of the bipolar precautions must be
observed.
High-Frequency Performance
In 50Ωsystems, signal response is reasonably flat up
to 50MHz (see Typical Operating Characteristics).
Above 20MHz, the on-response has several minor
peaks that are highly layout dependent. The problem
with high-frequency operation is not turning the switch
on, but turning it off. The off-state switch acts like a
capacitor and passes higher frequencies with less
attenuation. At 10MHz, off-isolation is about -52dB in
50Ωsystems, becoming worse (approximately 20dB
per decade) as frequency increases. Higher circuit
impedances also make off-isolation worse. Adjacent
channel attenuation is about 3dB above that of a bare
IC socket, and is due entirely to capacitive coupling.
Quad, Low-Voltage, SPST Analog Switches
8 _______________________________________________________________________________________
MAX4521/MAX4522/MAX4523
Quad, Low-Voltage, SPST Analog Switches
_______________________________________________________________________________________ 9
VGEN
GND
NC or
NO
CL
VOUT
V-
V-
V+
VOUT
IN
OFF ON OFF
ΔVOUT
Q = (ΔVOUT)(CL)
COM
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
OFF ON OFF
IN
VIN = +3V
V+
RGEN
IN
MAX4521
MAX4522
MAX4523
Figure 3. Charge Injection
50%
0.9 x V0UT1
+3V
0
0
LOGIC
INPUT
SWITCH
OUTPUT 2
(VOUT2)
0
0.9 x VOUT2
tDtD
LOGIC
INPUT V-
V-
RL2
GND
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
COM2
IN1, 2
COM1
VOUT2
V+
V+
CL2
VCOM1
RL1
VOUT1
CL1
RL = 300Ω
CL = 35pF
NO
NC SWITCH
OUTPUT 1
(VOUT1)
MAX4523
VCOM2
Figure 1. Switching Time
Figure 2. Break-Before-Make Interval (MAX4523 only)
Test Circuits/Timing Diagrams
tr < 20ns
tf < 20ns
50%
0
LOGIC
INPUT
V-
V-
RL
300Ω
NO
or NC
GND
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
VOUT = VCOM ( RL )
RL + RON
SWITCH
INPUT
IN, EN
+3V
tOFF
0
COM
SWITCH
OUTPUT
0.9 x V0UT 0.9 x VOUT
tON
VOUT
SWITCH
OUTPUT
LOGIC
INPUT
LOGIC INPUT WAVEFORMS INVERTED FOR EN AND SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
CL
35pF
V+
V+
VOUT
VCOM
0
MAX4521
MAX4522
MAX4523
MAX4521/MAX4522/MAX4523
Quad, Low-Voltage, SPST Analog Switches
10 ______________________________________________________________________________________
Figure 5. Crosstalk
IN
0 or
2.4V
SIGNAL
GENERATOR 0dBm
V+
10nF
ANALYZER
NC
or NO
RL
GND
COM
10nF
V-
V-
V+
MAX4521
MAX4522
MAX4523
SIGNAL
GENERATOR 0dBm
V+
10nF
ANALYZER N02
RL
GND
COM1
10nF
V-
V-
0 or 2.4V
IN1
N01 50Ω
COM2
IN2
0 or 2.4V
NC
V+
MAX4521
MAX4522
MAX4523
Figure 4. Off-Isolation
Test Circuits/Timing Diagrams (continued)
CAPACITANCE
METER
NC
or NO
COM
GND 10nF
V-
V-
IN 0 or
2.4V
10nF V+
f = 1MHz
V+
MAX4521
MAX4522
MAX4523
Figure 7. Channel On-Capacitance
CAPACITANCE
METER NC
or NO
COM
GND 10nF
V-
V-
IN 0 or
2.4V
10nF V+
f = 1MHz
V+
MAX4521
MAX4522
MAX4523
Figure 6. Channel Off-Capacitance
MAX4521/MAX4522/MAX4523
Quad, Low-Voltage, SPST Analog Switches
______________________________________________________________________________________ 11
*Contact factory for dice specifications.
**EP = Exposed pad.
***Contact factory for availability.
Chip Topography
0.057"
(1.45mm)
0.046"
(1.19mm)
COM4
"D"
COM1
IN3 IN2
COM3 COM2
IN1
"B" GND V- "A"
"C"
IN4
V+
SUBSTRATE CONNECTED TO V+
A
B
C
D
A
B
C
D
A
B
C
D
MAX4521 MAX4522 MAX4523
PIN NAME NAME NAMEPIN PIN
NC1
NC4
NC3
NC2
NO1
NO4
NO3
NO2
NO1
NO4
NC3
NC2
Ordering Information (continued)
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX4521EPE
-40°C to +85°C 16 Plastic DIP
P16-1
MAX4521ESE
-40°C to +85°C 16 Narrow SO
S16-2
MAX4521EEE
-40°C to +85°C
16 QSOP E16-4
MAX4521EUE
-40°C to +85°C
16 TSSOP
U16-2
MAX4521EGE
-40°C to +85°C
16 QFN-EP**
G1644-1
MAX4521MJE
-55°C to +125°C 16 CERDIP***
J16-3
MAX4522CPE
0°C to +70°C 16 Plastic DIP
P16-1
MAX4522CSE
0°C to +70°C 16 Narrow SO
S16-2
MAX4522CEE
0°C to +70°C
16 QSOP E16-4
MAX4522CUE
0°C to +70°C
16 TSSOP
U16-2
MAX4522CGE
0°C to +70°C
16 QFN-EP**
G1644-1
MAX4522C/D
0°C to +70°C
Dice* —
MAX4522EPE
-40°C to +85°C 16 Plastic DIP
P16-1
MAX4522ESE
-40°C to +85°C 16 Narrow SO
S16-2
MAX4522EEE
-40°C to +85°C
16 QSOP E16-4
MAX4522EUE
-40°C to +85°C
16 TSSOP
U16-2
MAX4522EGE
-40°C to +85°C
16 QFN-EP**
G1644-1
MAX4522MJE
-55°C to +125°C 16 CERDIP***
J16-3
MAX4523CPE
0°C to +70°C 16 Plastic DIP
P16-1
MAX4523CSE
0°C to +70°C 16 Narrow SO
S16-2
MAX4523CEE
0°C to +70°C
16 QSOP E16-4
MAX4523CUE
0°C to +70°C
16 TSSOP
U16-2
MAX4523CGE
0°C to +70°C
16 QFN-EP**
G1644-1
MAX4523C/D
0°C to +70°C
Dice* —
MAX4523EPE
-40°C to +85°C 16 Plastic DIP
P16-1
MAX4523ESE
-40°C to +85°C 16 Narrow SO
S16-2
MAX4523EEE
-40°C to +85°C
16 QSOP E16-4
MAX4523EUE
-40°C to +85°C
16 TSSOP
U16-2
MAX4523EGE
-40°C to +85°C
16 QFN-EP**
G1644-1
MAX4523MJE
-55°C to +125°C 16 CERDIP***
J16-3
MAX4521/MAX4522/MAX4523
Quad, Low-Voltage, SPST Analog Switches
12 ______________________________________________________________________________________
Pin Configurations
16
COM1
15
IN1
14
IN2
13
COM2
5
COM4
6
IN4
7
IN3
8
COM3
MAX4521
2V-
1NC1
3GND
4
NC4
11 V+
12 NC2
10 N.C.
9NC3
TOP VIEW
16 15 14 13
COM1 IN1 IN2 COM2
5
6
7 8
COM4
IN4
IN3 COM3
MAX4522
2
1
3
4
V-
NO1
GND
NO4
11
12
10
9
V+
NO2
N.C.
NO3
16 15 14 13
COM1 IN1 IN2 COM2
5
6
7 8
COM4
IN4
IN3 COM3
MAX4523
2
1
3
4
V-
NO1
GND
NO4
11
12
10
9
V+
NC2
N.C.
NC3
QFN QFN
QFN
*EP *EP *EP
*EP = Exposed Pad, connect EP to V+
MAX4521/MAX4522/MAX4523
Quad, Low-Voltage, SPST Analog Switches
______________________________________________________________________________________ 13
QSOP.EPS
F
1
1
21-0055
PACKAGE OUTLINE, QSOP .150", .025" LEAD PITCH
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
SOICN .EPS
PACKAGE OUTLINE, .150" SOIC
1
1
21-0041 B
REV.DOCUMENT CONTROL NO.APPROVAL
PROPRIETARY INFORMATION
TITLE:
TOP VIEW
FRONT VIEW
MAX
0.010
0.069
0.019
0.157
0.010
INCHES
0.150
0.007
E
C
DIM
0.014
0.004
B
A1
MIN
0.053A
0.19
3.80 4.00
0.25
MILLIMETERS
0.10
0.35
1.35
MIN
0.49
0.25
MAX
1.75
0.050
0.016L0.40 1.27
0.3940.386D
D
MINDIM
D
INCHES
MAX
9.80 10.00
MILLIMETERS
MIN MAX
16 AC
0.337 0.344 AB8.758.55 14
0.189 0.197 AA5.004.80 8
N MS012
N
SIDE VIEW
H 0.2440.228 5.80 6.20
e 0.050 BSC 1.27 BSC
C
HE
eBA1
A
D
0∞-8∞
L
1
VARIATIONS:
MAX4521/MAX4522/MAX4523
Quad, Low-Voltage, SPST Analog Switches
14 ______________________________________________________________________________________
12,16,20, 24L QFN.EPS
E
1
2
21-0106
PACKAGE OUTLINE
12,16,20,24L QFN, 4x4x0.90 MM
E
2
2
21-0106
PACKAGE OUTLINE
12,16,20,24L QFN, 4x4x0.90 MM
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
Quad, Low-Voltage, SPST Analog Switches
MAX4521/MAX4522/MAX4523
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
15 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600
© 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.
TSSOP4.40mm.EPS
PACKAGE OUTLINE, TSSOP 4.40mm BODY
21-0066
1
1
I
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
Revision History
Pages changed at Rev 6: 1, 7, 11, 12, 15