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19-1136; Rev 1; 1/97
Quad, Low-Voltage, SPST Analog Switches
_______________General Description
The MAX4521/MAX4522/MAX4523 are quad, low-voltage, single-pole/single-throw (SPST) analog switches. On-resistance (100 max) is matched between switches to 4 max, and is flat (12 max) over the specified signal range. Each switch can handle rail-to-rail analog signals. The off-leakage current is only 1nA at +25C and 10nA at +85C. The MAX4521 has four normally closed (NC) switches, and the MAX4522 has four normally open (NO) switches. 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 single +2.7V operation. All digital inputs have +0.8V and +2.4V logic thresholds, ensuring TTL/CMOS-logic compatibility when using 5V or a single +5V supply.
____________________________Features
o +2V to +12V Single Supply 2V to 6V Dual Supplies o 100 Signal Paths with 5V Supplies o Low Power Consumption, <1W o 4 Separately Controlled SPST Switches o Rail-to-Rail Signal Handling o Pin Compatible with Industry-Standard DG211/DG212/DG213 o >2kV ESD Protection per Method 3015.7 o TTL/CMOS-Compatible Inputs with 5V or Single +5V Supply
MAX4521/MAX4522/MAX4523
________________________Applications
Battery-Operated Equipment Data Acquisition Test Equipment Avionics Audio Signal Routing Networking
______________Ordering Information
PART MAX4521CPE MAX4521CSE MAX4521CEE MAX4521C/D TEMP. RANGE 0C to +70C 0C to +70C 0C to +70C 0C to +70C PIN-PACKAGE 16 Plastic DIP 16 Narrow SO 16 QSOP Dice*
Ordering Information continued at end of data sheet. *Contact factory for dice specifications.
_____________________Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW TOP VIEW IN1 1 COM1 2 NC1 3 V- 4 GND 5 NC4 6 COM4 7 IN4 8 DIP/SO/QSOP
MAX4521 LOGIC SWITCH 0 1 ON OFF 16 IN2 15 COM2 14 NC2 13 V+
IN1 1 COM1
2
16 IN2 15 COM2 14 NO2 13 V+
IN1 1 COM1
2
16 IN2 15 COM2 14 NC2 13 V+
NO1 3 V- 4 GND 5 NO4 6 COM4 7 IN4 8
NO1 3 V- 4 GND 5 NO4 6 COM4 7 IN4 8
MAX4521
12 N.C. 11 NC3 10 COM3 9
MAX4522
12 N.C. 11 NO3 10 COM3 9
MAX4523
12 N.C. 11 NC3 10 COM3 9
IN3
IN3
IN3
DIP/SO/QSOP
MAX4522 LOGIC SWITCH 0 1 OFF ON LOGIC 0 1
DIP/SO/QSOP
MAX4523 SWITCHES 1, 4 OFF ON SWITCHES 2, 3 ON OFF
N.C. = NOT CONNECTED
SWITCHES SHOWN FOR LOGIC "0" INPUT
________________________________________________________________ Maxim Integrated Products
1
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Quad, Low-Voltage, SPST Analog Switches MAX4521/MAX4522/MAX4523
ABSOLUTE MAXIMUM RATINGS
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 = +70C) (Note 2) Plastic DIP (derate 10.53mW/C above +70C) ..........842mW Narrow SO (derate 8.70mW/C above +70C) ............696mW QSOP (derate 9.52mW/C above +70C) ....................762mW CERDIP (derate 10.00mW/C above +70C) ...............800mW Operating Temperature Ranges MAX452_C_E ......................................................0C to +70C MAX452_E_E ...................................................-40C to +85C MAX452_MJE ................................................-55C to +125C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10 sec) ............................+300C
Note 1: Signals on NC_, NO_, COM_, or IN_ exceeding V+ or V- are clamped by internal diodes. Limit forward-diode current to maximum 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.
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 = +25C.) PARAMETER ANALOG SWITCH Analog Signal Range COM_ to NO_, COM_ to NC_ On-Resistance COM_ to NO_, COM_ to NC_ On-Resistance Match Between Channels (Note 5) COM_ to NO_, COM_ to NC_ On-Resistance Flatness (Note 6) NO_, NC_ Off-Leakage Current (Note 7) COM_ Off-Leakage Current (Note 7) COM_ On-Leakage Current (Note 7) VCOM_, VNO_, VNC_ RON RON (Note 4) V+ = 5V, V- = -5V, VCOM_ = 3V, ICOM_ = 1mA V+ = 5V, V- = -5V, VCOM_ = 3V, ICOM_ = 1mA V+ = 5V, V- = -5V, VCOM_ = 3V, ICOM_ = 1mA V+ = 5.5V, V- = -5.5V, VCOM_ = 4.5V, VN_ = 4.5V V+ = 5.5V, V- = -5.5V, VCOM_ = 4.5V, VN_ = V+ = 5.5V, V- = -5.5V, VCOM_ = 4.5V C, E, M +25C C, E, M +25C C, E, M +25C C, E, M +25C C, E M +25C 4.5V C, E M +25C C, E M -1 -10 -100 -1 -10 -100 -2 -20 -200 0.01 0.01 0.01 7 1 V65 V+ 100 125 4 6 12 15 1 10 100 1 10 100 2 20 200 nA nA nA V SYMBOL CONDITIONS TA MIN TYP (Note 3) MAX UNITS
RFLAT(ON)
ICOM_(ON)
2
_______________________________________________________________________________________
ICOM_(OFF)
INO_(OFF), INC_(OFF)
Quad, Low-Voltage, SPST Analog Switches
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 = +25C.) PARAMETER LOGIC INPUT IN_ Input Logic Threshold High IN_ Input Logic Threshold Low IN_ Input Current Logic High or Low VIN_H VIN_L IINH_, IINL_ VIN_ = 0.8V or 2.4V C, E, M C, E, M C, E, M 0.8 -1 1.6 1.6 0.03 1 2.4 V V A SYMBOL CONDITIONS TA MIN TYP (Note 3) MAX UNITS
MAX4521/MAX4522/MAX4523
SWITCH DYNAMIC CHARACTERISTICS Turn-On Time Turn-Off Time Break-Before-Make Time Delay (MAX4523 Only) Charge Injection (Note 4) NO_, NC_ Off-Capacitance COM_ Off-Capacitance COM_ On-Capacitance tON tOFF tBBM Q CN_(OFF) CCOM_(OFF) CCOM_(ON) VCOM_ = 3V, V+ = 4.5V, V- = -4.5V, Figure 1 VCOM_ = 3V, V+ = 4.5V, V- = -4.5V, Figure 1 VCOM_ = 3V, V+ = 5.5V, V- = -5.5V, Figure 2 CL = 1nF, VNO_ = 0V, RS = 0, Figure 3 VNO_ = GND, f = 1MHz, Figure 6 VCOM_ = GND, f = 1MHz, Figure 6 VCOM_ = VNO_ = GND, f = 1MHz, Figure 7 RL = 50, CL = 15pF, VN_ = 1VRMS, f = 100kHz, Figure 4 RL = 50, CL = 15pF, VN_ = 1VRMS, f = 100kHz, Figure 5 +25C C, E, M +25C C, E, M +25C +25C +25C +25C +25C 5 20 1 2 2 5 5 15 45 80 100 30 40 ns ns ns pC pF pF pF
Off-Isolation (Note 8)
VISO
+25C
< -90
dB
Channel-to-Channel Crosstalk (Note 9) POWER SUPPLY Power-Supply Range V+ Supply Current V- Supply Current
VCT
+25C
< -90
dB
V+, VI+ IV+ = 5.5V, all VIN_ = 0V or V+ V- = -5.5V
C, E, M +25C C, E, M +25C C, E, M
-6 -1 -1 -1 -1
0.05 0.05
6 1 1 1 1
V A A
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Quad, Low-Voltage, SPST Analog Switches MAX4521/MAX4522/MAX4523
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 = +25C.) PARAMETER ANALOG SWITCH Analog Signal Range COM_ to NO_, COM_ to NC_ On-Resistance COM_ to NO_, COM_ to NC_ On-Resistance Match Between Channels (Note 5) NO_, NC_ Off-Leakage Current (Notes 7, 10) COM_ Off-Leakage Current (Notes 7, 10) COM_ On-Leakage Current (Notes 7, 10) LOGIC INPUT IN_ Input Logic Threshold High IN_ Input Logic Threshold Low IN_ Input Current Logic High or Low VIN_H VIN_L IINH_, IINL_ VIN_ = 0.8V or 2.4V C, E C, E C, E 0.8 -1 1.6 1.6 0.03 1 2.4 V V A VCOM_, VNO_, VNC_ RON RON (Note 4) V+ = 4.5V, VCOM_ = 3.5V, ICOM_ = 1mA V+ = 5V, VCOM_ = 3.5V, ICOM_ = 1mA V+ = 5.5V; VCOM_ = 1V, 4.5V; VN_ = 4.5V, 1V V+ = 5.5V; VCOM_ = 1V, 4.5V; VN_ = 4.5V, 1V C, E, M +25C C, E, M +25C C, E, M +25C C, E M +25C C, E M +25C ICOM_(ON) V+ = 5.5V; VCOM_ = 4.5V, 1V C, E, M -1 -10 -100 -1 -10 -100 -2 -20 -200 0.01 0.01 0.01 2 0 125 V+ 200 250 8 10 1 10 100 1 10 100 2 20 200 nA nA nA V SYMBOL CONDITIONS TA MIN TYP (Note 3) MAX UNITS
INO_(OFF), INC_(OFF)
ICOM_(OFF)
SWITCH DYNAMIC CHARACTERISTICS Turn-On Time Turn-Off Time Break-Before-Make Time Delay (MAX4523 Only) Charge Injection (Note 4) POWER SUPPLY V+ Supply Current V- Supply Current I+ IV+ = 5.5V, all VIN_ = 0V or V+ V- = 0V +25C C, E, M +25C C, E, M -1 -1 -1 -1 0.05 0.05 1 1 1 1 A A tON tOFF tBBM Q VCOM_ = 3V, V+ = 4.5V, Figure 1 VCOM_ = 3V, V+ = 4.5V, Figure 1 VCOM_ = 3V, V+ = 5.5V, Figure 2 CL = 1nF, VNO_ = 0V, RS = 0, Figure 3 +25C C, E, M +25C C, E, M +25C +25C 10 30 1 5 20 60 100 150 50 75 ns ns ns pC
4
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Quad, Low-Voltage, SPST Analog Switches
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 = +25C.) PARAMETER ANALOG SWITCH Analog Signal Range COM_ to NO_, COM_ to NC_ On-Resistance LOGIC INPUT IN_ Input Logic Threshold High IN_ Input Logic Threshold Low IN_ Input Current Logic High or Low VIN_H VIN_L IINH_, IINL_ VIN_ = 0.8V or 2.4V C, E C, E C, E 0.8 -1 1.6 1.6 0.03 1 2.4 V V A VCOM_, VNO_, VNC_ RON (Note 4) V+ = 2.7V, VCOM_ = 1.0V, ICOM_ = 0.1mA C, E, M +25C C, E, M 0 260 V+ 500 600 V SYMBOL CONDITIONS TA MIN TYP (Note 3) MAX UNITS
MAX4521/MAX4522/MAX4523
SWITCH DYNAMIC CHARACTERISTICS (Note 4) Turn-On Time Turn-Off Time Break-Before-Make Time Delay (MAX4523 Only) Charge Injection POWER SUPPLY V+ Supply Current V- Supply Current I+ IV+ = 3.6V, all VIN_ = 0V or V+ V- = 0V +25C C, E, M +25C C, E, M -1 -1 -1 -1 0.05 0.05 1 1 1 1 A A tON tOFF tBBM Q VCOM_ = 1.5V, V+ = 2.7V, Figure 1 VCOM_ = 1.5V, V+ = 2.7V, Figure 1 VCOM_ = 1.5V, V+ = 3.6V, Figure 2 CL = 1nF, VNO_ = 0V, RS = 0, Figure 3 +25C C, E, M +25C C, E, M +25C +25C 15 50 0.5 5 40 120 250 300 80 100 ns ns ns pC
The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column. Guaranteed by design. RON = RON(MAX) - RON(MIN). 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 = +25C. 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. Note 3: Note 4: Note 5: Note 6:
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Quad, Low-Voltage, SPST Analog Switches MAX4521/MAX4522/MAX4523
__________________________________________Typical Operating Characteristics
(V+ = +5V, V- = -5V, GND = 0V, TA = +25C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM (DUAL SUPPLIES)
MAX4521/2/3-TOC01
ON-RESISTANCE vs. VCOM AND TEMPERATURE (DUAL SUPPLIES)
MAX4521/2/3-TOC02
ON-RESISTANCE vs. VCOM (SINGLE SUPPLY)
V+ = 2.7V 300 250 V+ = 3.3V RON ()
MAX4521/2/3-TOC03
180 160 140 120 RON () 100 80 60 40 20 0 -5 -4 -3 -2 -1 0 1 2 3 4 5 VCOM (V) V+, V- = 4.0V V+, V- = 5.0V V+, V- = 3.0V V+, V- = 2.0V
110 100 90 RON () 80 70 60 50 TA = 0C 40 TA = -55C 30 -5 -4 -3 -2 -1 0 1 2 3 4 5 VCOM (V) TA = +85C TA = +25C TA = +125C
350
200 150 100 50 0 0 1 2 3 4 5 VCOM (V) V+ = 5.0V
ON-RESISTANCE vs. VCOM AND TEMPERATURE (SINGLE SUPPLY)
TA = +125C
MAX4521/2/3-TOC04
ON- AND OFF-LEAKAGE CURRENT vs. TEMPERATURE
MAX4521/2/3-TOC05
CHARGE INJECTION vs.VCOM
MAX4521/2/3-TOC06
200 180 160
10n
2
1n LEAKAGE (A)
ON LEAKAGE
1 Q (pC) V+ = +5V V- = -5V
RON ()
140 TA = +25C 120 100 80
TA = +85C
100p
0
10p OFF LEAKAGE 1p -1
V+ = +5V V- = 0V
TA = 0C TA = -55C
60 0 1 2 3 4 5 VCOM (V)
0.1p -55 -25 0 25 50 75 100 125 TEMPERATURE (C)
-2 -5 -4 -3 -2 -1 0 1 2 3 4 5 VCOM (V)
TURN-ON/OFF TIME vs. SUPPLY VOLTAGE
MAX4521/2/3-TOC07
TURN-ON/OFF TIME vs. TEMPERATURE
MAX4521/2/3-TOC08
POWER-SUPPLY CURRENT vs. TEMPERATURE
MAX4521/2/3-TOC09
200 180 160 140 tON, tOFF (ns) 120 100 80 60 40 20 0 2 3 4 5 6 7 V+ (V) 8 9 tOFF tON
100 90 80 70 tON, tOFF (ns) 60 50 40 30 20 10 0 tOFF tON
1
0.1
I+
I+, I- (A)
0.01
I-
0.001
0.0001
0.00001 -55 -25 0 25 50 75 100 125 -55 -25 0 25 50 75 100 125 TEMPERATURE (C) TEMPERATURE (C)
10 11 12
6
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Quad, Low-Voltage, SPST Analog Switches
_____________________________Typical Operating Characteristics (continued)
(V+ = +5V, V- = -5V, GND = 0V, TA = +25C, unless otherwise noted.)
MAX4521/MAX4522/MAX4523
TOTAL HARMONIC DISTORTION vs. FREQUENCY
V+ = +5V V- = -5V 600 IN AND OUT
MAX4521/2/3-TOC10
FREQUENCY RESPONSE
MAX4521/2/3-TOC11
100
0 -10 -20 INSERTION LOSS -30 LOSS (dB)
5 0 -5 -10 PHASE (DEGREES)
10
THD (%)
1
-40 -50 -60
OFF-ISOLATION
-15 -20 -25
0.1
0.01
-70 -80
ON-PHASE 50 IN/OUT
-30 -35 -40
0.001 10 100 1k FREQUENCY (Hz) 10k 100k
-90 0.01 0.1 1 10 100 300 FREQUENCY (MHz)
______________________________________________________________Pin Description
PIN NAME MAX4521 1, 16, 9, 8 2, 15, 10, 7 3, 14, 11, 6 -- -- -- 4 MAX4522 1, 16, 9, 8 2, 15, 10, 7 -- 3, 14, 11, 6 -- -- 4 MAX4523 1, 16, 9, 8 2, 15, 10, 7 -- -- 3, 6 14, 11 4 IN1-IN4 COM1-COM4 NC1-NC4 NO1-NO4 NO1, NO4 NC2, NC3 VLogic-Control Digital Inputs Analog Switch Common* Terminals Analog Switch Normally Closed Terminals Analog Switch Normally Open Terminals Analog Switch Normally Open Terminals Analog Switch Normally Closed Terminals Negative Analog Supply-Voltage Input. Connect to GND for singlesupply operation. Ground. Connect to digital ground. (Analog signals have no ground reference; they are limited to V+ and V-.) No Connect. Not internally connected. Positive Analog and Digital Supply Voltage Input. Internally connected to substrate. FUNCTION
5 12 13
5 12 13
5 12 13
GND N.C. V+
*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.
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Quad, Low-Voltage, SPST Analog Switches MAX4521/MAX4522/MAX4523
__________Applications Information
Power-Supply Considerations
Overview The MAX4521/MAX4522/MAX4523 construction is typical 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 limits of the analog voltage on any switch. Reverse ESDprotection diodes are internally connected between each analog-signal pin and both V+ and V-. If any analog signal exceeds V+ or V-, one of these diodes conducts. 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 signal 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 current. All analog leakage current flows to the supply terminals, 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 connection between the logic supplies and the analog supplies. 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 thresholds, 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 threshold is about 3.1V. This is above the TTL output highlevel 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- supplies 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 connected to GND. All of the bipolar precautions must be observed.
High-Frequency Performance
In 50 systems, 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 50 systems, 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.
8
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Quad, Low-Voltage, SPST Analog Switches
______________________________________________Test Circuits/Timing Diagrams
MAX4521 MAX4522 MAX4523
SWITCH INPUT V COM COM V+ V+ NO or NC RL 300 GND 0V VVSWITCH OUTPUT 0V t ON SWITCH OUTPUT VOUT CL 35pF LOGIC INPUT +3V 50% 0V t r < 20ns t f < 20ns
MAX4521/MAX4522/MAX4523
IN LOGIC INPUT
t OFF VOUT
0.9 x V0UT
0.9 x VOUT
CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VOUT = VCOM RL + RON
(
)
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE.
Figure 1. Switching Time
MAX4523
VCOM1 VCOM2 COM1 COM2 IN1, 2 LOGIC INPUT GND
V+ V+
LOGIC INPUT NO NC RL2 VOUT2 CL2 RL1 VOUT1 CL1 SWITCH OUTPUT 1 (VOUT1) SWITCH OUTPUT 2 (VOUT2) RL = 300 CL = 35pF
+3V 50% 0V 0.9 x V0UT1 0V
VV-
0.9 x VOUT2 0V tD tD
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
Figure 2. Break-Before-Make Interval (MAX4523 only)
MAX4521 MAX4522 MAX4523
RGEN COM
V+ V+ VOUT NC or NO CL GND IN VVOUT IN OFF ON
VOUT
V GEN
OFF
VVIN = +3V
IN
OFF
ON Q = (V OUT )(C L )
OFF
IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
Figure 3. Charge Injection
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Quad, Low-Voltage, SPST Analog Switches MAX4521/MAX4522/MAX4523
_________________________________Test Circuits/Timing Diagrams (continued)
10nF SIGNAL GENERATOR 0dBm
V+
MAX4521 MAX4522 MAX4523
SIGNAL GENERATOR 0dBm 0V or 2.4V 0V or 2.4V
10nF
V+
MAX4521 MAX4522 MAX4523
N01 IN2 0V or 2.4V 50
COM
V+
V+ COM1 IN1
IN ANALYZER RL VNC or NO GND V-
ANALYZER 10nF RL
N02 GND
COM2 V10nF
NC
V-
Figure 4. Off Isolation
Figure 5. Crosstalk
10nF
V+
MAX4521 MAX4522 MAX4523
10nF
V+
MAX4521 MAX4522 MAX4523
V+ COM CAPACITANCE METER IN CAPACITANCE METER f = 1MHz NC or NO GND V10nF 0V or 2.4V COM
V+
IN f = 1MHz NC or NO GND V10nF
0V or 2.4V
V-
V-
Figure 6. Channel-Off Capacitance
Figure 7. Channel-On Capacitance
10
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Quad, Low-Voltage, SPST Analog Switches
_Ordering Information (continued)
PART MAX4521EPE MAX4521ESE MAX4521EEE MAX4521MJE MAX4522CPE MAX4522CSE MAX4522CEE MAX4522C/D MAX4522EPE MAX4522ESE MAX4522EEE MAX4522MJE MAX4523CPE MAX4523CSE MAX4523CEE MAX4523C/D MAX4523EPE MAX4523ESE MAX4523EEE MAX4523MJE TEMP. RANGE -40C to +85C -40C to +85C -40C to +85C -55C to +125C 0C to +70C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -55C to +125C 0C to +70C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -55C to +125C PIN-PACKAGE 16 Plastic DIP 16 Narrow SO 16 QSOP 16 CERDIP** 16 Plastic DIP 16 Narrow SO 16 QSOP Dice* 16 Plastic DIP 16 Narrow SO 16 QSOP 16 CERDIP** 16 Plastic DIP 16 Narrow SO 16 QSOP Dice* 16 Plastic DIP 16 Narrow SO 16 QSOP 16 CERDIP**
"B" GND V"A"
___________________Chip Topography
MAX4521/MAX4522/MAX4523
COM4
COM1
IN4
IN1
IN3
IN2 COM2 0.057" (1.45mm)
COM3
*Contact factory for dice specifications. **Contact factory for availability.
"C"
V+ 0.046" (1.19mm)
"D"
MAX4521 PIN A B C D NAME NC1 NC4 NC3 NC2
MAX4522 PIN A B C D NAME NO1 NO4 NO3 NO2
MAX4523 PIN A B C D NAME NO1 NO4 NC3 NC2
TRANSISTOR COUNT: 97 SUBSTRATE CONNECTED TO V+
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11
Quad, Low-Voltage, SPST Analog Switches MAX4521/MAX4522/MAX4523
________________________________________________________Package Information
DIM A A1 A2 B C D E e H h L N S INCHES MILLIMETERS MAX MIN MIN MAX 0.068 0.061 1.55 1.73 0.004 0.0098 0.127 0.25 0.061 0.055 1.40 1.55 0.012 0.008 0.20 0.31 0.0075 0.0098 0.19 0.25 SEE VARIATIONS 0.157 0.150 3.81 3.99 0.25 BSC 0.635 BSC 0.244 0.230 5.84 6.20 0.016 0.010 0.25 0.41 0.035 0.016 0.41 0.89 SEE VARIATIONS SEE VARIATIONS 8 0 0 8 DIM PINS D S D S D S D S 16 16 20 20 24 24 28 28 INCHES MILLIMETERS MIN MAX MIN MAX 0.189 0.196 4.80 4.98 0.0020 0.0070 0.05 0.18 0.337 0.344 8.56 8.74 0.0500 0.0550 1.27 1.40 0.337 0.344 8.56 8.74 0.0250 0.0300 0.64 0.76 0.386 0.393 9.80 9.98 0.0250 0.0300 0.64 0.76
21-0055A
D A e B
A1
S
E
H h x 45 A2
N E C L
QSOP QUARTER SMALL-OUTLINE PACKAGE
DIM
D A e B
0.101mm 0.004in.
0-8
A1
C
L
A A1 B C E e H L
INCHES MAX MIN 0.069 0.053 0.010 0.004 0.019 0.014 0.010 0.007 0.157 0.150 0.050 0.244 0.228 0.050 0.016
MILLIMETERS MIN MAX 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 3.80 4.00 1.27 5.80 6.20 0.40 1.27
E
H
Narrow SO SMALL-OUTLINE PACKAGE (0.150 in.)
DIM PINS D D D 8 14 16
INCHES MILLIMETERS MIN MAX MIN MAX 0.189 0.197 4.80 5.00 0.337 0.344 8.55 8.75 0.386 0.394 9.80 10.00
21-0041A
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.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 1997 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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