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19-0189; Rev 1; 6/99
Precision, Quad, SPDT, CMOS Analog Switch
_______________General Description
The MAX333A is a precision, quad, single-pole doublethrow (SPDT) analog switch. The four independent switches operate with bipolar supplies ranging from 4.5V to 20V, or with a single-ended supply between +10V and +30V. The MAX333A offers low on resistance (less than 35), guaranteed to match within 2 between channels and to remain flat over the analog signal range (3 max). It also offers break-before-make switching (10ns typical), with turn-off times less than 145ns and turn-on times less than 175ns. The MAX333A is ideal for portable operation since quiescent current runs less than 50A with all inputs high or low. This monolithic, quad switch is fabricated with Maxim's new improved silicon-gate process. Design improvements guarantee extremely low charge injection (10pC), low power consumption (3.75mW), and electrostatic discharge (ESD) greater than 2000V. Logic inputs are TTL and CMOS compatible and guaranteed over a +0.8V to +2.4V range--regardless of supply voltage. Logic inputs and switched analog signals can range anywhere between the supply voltages without damage.
____________________________Features
o Upgraded Replacement for a DG211/DG212 Pair or Two DG403s o Low On Resistance < 17 Typical (35 Max) o Guaranteed Matched On Resistance Between Channels < 2 o Guaranteed Flat On Resistance over Analog Signal Range 3 Max o Guaranteed Charge Injection < 10pC o Guaranteed Off-Channel Leakage < 6nA at +85C o ESD Guaranteed > 2000V per Method 3015.7 o Single-Supply Operation (+10V to +30V) Bipolar-Supply Operation (4.5V to 20V) o TTL-/CMOS-Logic Compatibility o Rail-to-Rail Analog Signal Handling Capability
MAX333A
______________Ordering Information
PART MAX333ACPP MAX333ACWP MAX333ACUP MAX333AC/D MAX333AEPP MAX333AEWP MAX333AEUP MAX333AMJP TEMP. RANGE 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 20 Plastic DIP 20 Wide SO 20 TSSOP Dice* 20 Plastic DIP 20 Wide SO 20 TSSOP 20 CERDIP
________________________Applications
Test Equipment Communications Systems PBX, PABX Heads-Up Displays Portable Instruments
* Contact factory for dice specifications.
__________________Pin Configuration
TOP VIEW
IN1 1 NO1 2 COM1 3 NC1 4 V- 5 GND 6 NC2 7 COM2 8 NO2 9 IN2 10 20 IN4 19 NO4 18 COM4 17 NC4 16 V+
__________Typical Operating Circuit
INPUTS V1 V2 OUTPUTS V1 - V2
OSC IN
MAX333A
15 N.C. 14 NC3 13 COM3 12 NO3 11 IN3 V4 FLYING CAPACITOR LEVEL TRANSLATOR (2-CHANNEL) V3 V3 - V4
DIP/SO/TSSOP
SWITCHES ARE SHOWN WITH LOGIC "0" INPUT N.C. = NOT INTERNALLY CONNECTED
________________________________________________________________ Maxim Integrated Products
1
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Precision, Quad, SPDT, CMOS Analog Switch MAX333A
ABSOLUTE MAXIMUM RATINGS
V+ to V- ..................................................................................44V VIN, VCOM, VNO, VNC ......................................................V- to V+ (VNO - VNC) ............................................................................32V V+ to Ground..........................................................................30V V- to Ground..........................................................................-30V Current, Any Terminal Except VCOM, VNO, or VNC .............30mA Continuous Current, VCOM, VNO, or VNC ............................20mA Peak Current, VCOM, VNO, or VNC (Pulsed at 1ms, 10% duty cycle max) ............................70mA ESD ....................................................................................2000V Note 1: Device mounted with all leads soldered to PC board. Continuous Power Dissipation (TA = +70C) (Note 1) Plastic DIP (derate above +70C by 11.11mW/C) .....889mW SO (derate above +70C by 10.00mW/C) ..................800mW CERDIP (derate above +70C by 11.11mW/C) ..........889mW TSSOP (derate above +70C by 7mW/C) ..................559mW Operating Temperature Ranges: MAX333AC_ _ .....................................................0C to +70C MAX333AE_ _ ..................................................-40C to +85C MAX333AMJP ................................................-55C to +125C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10sec) .............................+300C
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
(GND = 0V, V+ = +15V, V- = -15V, TA = +25C, unless otherwise noted.) PARAMETER POWER REQUIREMENTS Positive Supply Current Supply Voltage Range Negative Supply Current LOGIC INPUT Input Voltage Low Input Voltage High Input Current SWITCH Analog Signal Range On Circuit Resistance On Resistance Match Between Channels (Note 4) On Resistance Flatness (Note 4) On Circuit Leakage Current Off Circuit Leakage Current DYNAMIC Turn-Off Time Turn-On Time Break-Before-Make Time Off Capacitance On Capacitance Charge Injection Off Isolation Crosstalk 2 SYMBOL CONDITIONS MIN TYP MAX (Notes 2, 3) 0.05 4.5V 10 0.01 V2.4 -1.0 VVCOM = +10V, I(NC or NO) = 1mA; VCOM = -10V, I(NC or NO) = 1mA I(NC or NO) = -10mA, VD = 10V or -10V, V+ =15V, V- = -15V I(NC or NO) = -10mA, VD = 5V or -5V, V+ =15V, V- = -15V M C, E 20 0.25 20 30 1 0.8 V+ 1.0 V+ 35 45 2 4 3 -0.75 -1.00 -0.25 -0.50 5 0.75 1.00 0.25 0.05 145 175 10 5 5 CL = 10nF, VGEN = 0V, RGEN = 0, Figure 6 f = 1MHz, RL = 75, VCOM = 2.3VRMS TA = +25C 2 72 78 10 nA nA UNITS
I+ V+/VV+ IVIL VIH IIN VCOM, VNO, VNC RON
VIN = 0V/5V,V+ = 16.5V, V- = -16.5V Dual supply, V+ = V- Single supply, V- = GND VIN = 0V/5V,V+ = 16.5V, V- = -16.5V
mA V A V V A V
VIN = V-, V+
0.0001
TA = +25C TA = TMIN to TMAX TA = +25C
RON
RON ICOM INC or INO tOFF tON tOPEN COFF CON Q OIRR CCRR
TA = TMIN to TMAX M VCOM = 15.5V, VNC or VNO = +15.5V, V+ = 16.5V, V- = -16.5V C, E M VCOM = 15.5V VNC or VNO = +15.5V, V+ = 16.5V, V- = -16.5V C, E Figure 1
0.20 0.01 0.02
ns ns ns pF pF pC dB dB
_______________________________________________________________________________________
Precision, Quad, SPDT, CMOS Analog Switch
ELECTRICAL CHARACTERISTICS-DUAL SUPPLIES (continued)
(GND = 0V, V+ = +15V, V- = -15V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER LOGIC INPUT Input Voltage Low Input Voltage High Input Current SWITCH Analog Signal Range On Circuit Resistance On Circuit Leakage Current On Circuit Leakage Current VCOM VCOM = 10V, I(NC or NO) = 1mA; RON VCOM = -10V, I(NC or NO = 1mA VCOM = 15V, VNC or VNO = -15V, ICOM V+ = 16.5V, V- = -16.5V VCOM = 15V, VNC or VNO = -15V, INC or INO V+ = 16.5V, V- = -16.5V C, E M C, E M C, E M VV+ 45 45 10 60 6 V nA nA VIL VIH IIN V2.4 0.8 V+ 0.0001 1.0 V V A SYMBOL CONDITIONS MIN TYP MAX (Notes 2, 3) UNITS
MAX333A
VIN = V-, V+
-1.0
-10 -60 -6
ELECTRICAL CHARACTERISTICS--Single Supply
(GND = 0V, V+ = +12V, V- = 0V, TA = +25C, unless otherwise noted.) PARAMETER SUPPLY Supply Voltage Range Positive Supply Current INPUT Input Voltage Low Input Voltage High Input Current SWITCH Analog Signal Range On Circuit Resistance On Circuit Leakage Current Off Circuit Leakage Current DYNAMIC Turn-Off Time Turn-On Time Break-Before-Make Time Off Isolation Crosstalk Note 2: Note 3: Note 4: tOFF tON tOPEN OIRR CCRR f = 1MHz, RL = 75, VCOM = 2.3VRMS 5 Figure 1 45 90 10 70 72 ns ns ns dB dB VCOM, VNO, VNC rON ICOM INC or INO VCOM = 10V, I(NC or NO) = 1mA, VCOM = 1V, I(NC or NO) = 1mA VCOM = 11V, VNC or VNO = 0V VCOM = 1V, VNC or VNO = V+ VCOM = 11V VNC or VNO = 1V V35 V+ 75 0.75 0.25 V nA nA VINLO VINHI IIN VIN = V+, 0V 0 2.4 0.8 V+ 1 V V A V+ l+ Single supply, V- = GND 10 30 0.25 V mA SYMBOL CONDITIONS MIN TYP MAX (Notes 2, 3) UNITS
The algebraic convention, whereby the most negative value is a minimum and the most positive is a maximum, is used in this data sheet. Typical values are for design aid only, not guaranteed or subject to production testing. On resistance match between channels and flatness are guaranteed only with bipolar-supply operation. _______________________________________________________________________________________ 3
Precision, Quad, SPDT, CMOS Analog Switch MAX333A
__________________________________________Typical Operating Characteristics
(TA = +25C, unless otherwise noted).
ON RESISTANCE vs. VCOM AND POWER SUPPLY VOLTAGE
MAX333A-01
MAX333A-02
45 40 35 RON () 30 25 20 15 10 5
RON ()
RON ()
A: V+ = 5V, V- = -5V B: V+ = 10V, V- = -10V C: V+ = 15V, V- = -15V D: V+ = 20V, V- = -20V
A
30 25
V+ = 15V V- = -15V
V- = 0V 120 100
TA = +125C
+85C 20 15 10 5 -20 -10 0 VCOM (V) 10 20 +25C -55C
80 60 40 20 0
V+ = 5V
B
C D
V+ = 10V V+ = 15V V+ = 20V 5 10 VCOM (V) 15 20
-20
-10
0 VCOM (V)
10
20
ON RESISTANCE vs. VCOM AND SINGLE SUPPLY
MAX333A-04
OFF LEAKAGE CURRENTS vs. TEMPERATURE
MAX333A-05
ON LEAKAGE CURRENTS vs. TEMPERATURE
V+ = 16.5V V- = -16.5V VCOM = 15V VNC OR VNO = 15V
MAX333A-06
70 60 50 RON ( )
V+ = 12V V- = 0V TA = +125C TA = +85C
100 10 OFF LEAKAGE 1 0.1 0.01
100 10 1 0.1 0.01 0.001 0.0001
V+ = 16.5V V- = -16.5V VCOM = 15V VNC OR VNO = 15V
40 30 20 10 0 5 10 VCOM (V) 15 20 TA = +25C
0.001 0.0001 -55 +25 TEMPERATURE (C) +125
ON LEAKAGE
-55
+25 TEMPERATURE (C)
+125
CHARGE INJECTION vs. VCOM
MAX333A-07
SUPPLY CURRENT vs. TEMPERATURE
I+ AT V+ = +16.5V
MAX333A-08
75 VSUPPLY = +15V 50 25 Q (pC) 0 -25 -50 -75 -20 -15 -10 -5 0 VCOM (V) 5 10 15
100 10 1 0.1 0.01 0.001 0.0001
I- AT V+ = +16.5V
20
I+, I-, IL (A)
-55
+25 TEMPERATURE (C)
+125
4
_______________________________________________________________________________________
MAX333A-03
50
ON RESISTANCE vs. VCOM AND TEMPERATURE
35 140
ON RESISTANCE vs. VCOM AND TEMPERATURE
Precision, Quad, SPDT, CMOS Analog Switch
_____________________Pin Description
PIN 1, 10, 11, 20 2, 9, 12, 19 3, 8, 13, 18 4, 7, 14, 17 5 6 15 16 NAME IN1-IN4 NO1-NO4 COM1-COM4 NC1-NC4 VGND N.C. V+ FUNCTION Logic-Level Inputs Normally Open Switches Common Switch Poles Normally Closed Switches Negative Power Supply Ground Not Internally Connected Positive Power Supply
V+
Overvoltage Protection
Proper power-supply sequencing is recommended for all CMOS devices. It is important not to exceed the absolute maximum ratings because stresses beyond the listed ratings may cause permanent damage to the devices. Always sequence V+ on first, followed by VL, V-, and logic inputs. If power-supply sequencing is not possible, add two small signal diodes in series with the supply pins (Figure 1). Adding the diodes reduces the analog signal range to 1V below V+ and 1V below V-, but low switch resistance and low leakage characteristics are unaffected.
MAX333A
__________Applications Information
The main limitation of supply voltages other than 15V is a reduction in the analog signal range. The MAX333A operates with 5V to 20V bipolar supplies. The Typical Operating Characteristics and graphs show typical on resistance for 15V, 10V, 5 supplies. Switching times increase by a factor of two or more for 5V operation. The MAX333A can operate from +10V to +24V unipolar supplies. It can be powered from a single +10V to +24V supply, as well as from unbalanced supplies such as +24V and -5V. Connect V- to 0V when operating with a single supply.
Operation with Supply Voltages Other than 15Vo
COM_
NO_ ( OR NC_)
Vg
V-
Figure 1. Overvoltage Protection Using Blocking Diodes
______________________________________________Test Circuits/Timing Diagrams
t R < 20ns t F < 20ns 50% 0V t ON t OFF +10V V COM 0V -10V t OFF t ON t OPEN 50% 50% t OPEN 50% 50% LOGIC INPUT +10V -10V IN_ V+ GND V50% NC_ COM_ NO_ 300 SWITCH OUTPUT
3V V IN
+15V
-15V
(REPEAT TEST FOR IN2, IN3, AND IN4.)
Figure 2. Switching-Time Test Circuit
_______________________________________________________________________________________ 5
Precision, Quad, SPDT, CMOS Analog Switch
______________________________________________Test Circuits/Timing Diagrams
MAX333A
+15V C C
+15V
COM_
V+ COM_
V+
CAPACITANCE METER
IN_ NO_ OR NC_ GND V-
0V, 2.4V CAPACITANCE METER C NO OR NC GND V-
IN_
0V, 2.4V
C
-15V
-15V
Figure 3. Channel-Off Capacitance
Figure 4. Channel-On Capacitance
+15V LOGIC INPUT +3V 50% 0V VCOM VO1 0.9VO LOGIC INPUT V COM COM_ NC IN_ GND VV+ NO VO2 RL2 RL1 VO1 CL1
0V SWITCH OUTPUT VCOM VO2 SWITCH OUTPUT 0V tD tD 0.9VO
CL2
-15V CL INCLUDES FIXTURE AND STRAY CAPACITANCE. LOGIC 0 INPUT.
R L = 1000 C L = 35pF
Figure 5. Break-Before-Make
+15V V+ R GEN COM_ NC OR NO CL 10nF VO VO IN_ VO
V GEN
GND
IN_
V-
ON
OFF
ON
-15V Q = (V O )(C L )
Figure 6. Charge Injection
6
_______________________________________________________________________________________
Precision, Quad, SPDT, CMOS Analog Switch
_________________________________Test Circuits/Timing Diagrams (continued)
MAX333A
C SIGNAL GENERATOR
+15V
COM_
V+ 0V, 2.4V
IN_ ANALYZER CH A CH B RL -15V 100 NC_ OR NO_ GND VC
FREQUENCY TESTED 1 MHz
SIGNAL GENERATOR AUTOMATIC SYNTHESIZER
ANALYZER TRACKING SPECTRUM ANALYZER VCOM VNC OR VNO
OFF ISOLATION = 20LOG C = 5pF
Figure 7. Off-Isolation
C
+15V
SIGNAL GENERATOR
V+
COM_
NC_ OR NO_
50
0V, 2.4V ANALYZER CH A CH B RL
IN_
IN1
0V, 2.4V
FREQUENCY TESTED 1 MHz
SIGNAL GENERATOR AUTOMATIC SYNTHESIZER REPEAT TESTS FOR OTHER CHANNELS
ANALYZER TRACKING SPECTRUM ANALYZER
NC1 OR NO1 GND
COM1
V-
C
-15V 100
Figure 8. Crosstalk
_______________________________________________________________________________________
7
Precision, Quad, SPDT, CMOS Analog Switch MAX333A
___________________Chip Topography
NO3 IN3 IN2
NO2 COM3 NC3 V+ NC4 COM4 COM2 NC2 GND VNC1 COM1 0.139" (3.53mm)
NO4
IN4
IN1
NO1
0.101" (2.57mm)
TRANSISTOR COUNT: 145; SUBSTRATE CONNECTED TO V+.
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.
8 ___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 (c) 1999 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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