MAX4631 Maxim, MAX4631 Datasheet

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MAX4631

Manufacturer Part Number
MAX4631
Description
The MAX4631/MAX4632/MAX4633 high-voltage, dual analog switches are pin compatible with the industry-standard DG401/DG403/DG405
Manufacturer
Maxim
Datasheet

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The MAX4631/MAX4632/MAX4633 high-voltage, dual
analog switches are pin compatible with the industry-stan-
dard DG401/DG403/DG405. They upgrade the existing
devices with fault-protected inputs and Rail-to-Rail
handling capabilities. The MAX4631/MAX4632/MAX4633’s
normally open (NO) and normally closed (NC) terminals
are protected from overvoltage faults up to 36V during
power-up or power-down. During a fault condition, these
terminals become open circuit and only nanoamperes of
leakage current flow from the source, yet the switch output
(COM_) continues to furnish up to 18mA of the appropri-
ate polarity supply voltage to the load. This ensures unam-
biguous rail-to-rail outputs when a fault begins and ends.
On-resistance is 85Ω (max) at +25°C and is matched
between switches to 6Ω (max). Off-leakage current is only
0.5nA at +25°C and 5nA at +85°C.
The MAX4631 has two NO single-pole/single-throw (SPST)
switches. The MAX4632 has two NO/NC single-pole/
double-throw (SPDT) switches. The MAX4633 has two NO
double-pole/single-throw (DPST) switches.
These CMOS switches operate with dual power supplies
ranging from ±4.5V to ±18V or a single supply between
+9V and +36V. All digital inputs have +0.8V and +2.4V
logic thresholds, ensuring both TTL- and CMOS-logic
compatibility when using ±15V or a single +12V supply.
19-1515; Rev 0; 7/99
Pin Configurations appear at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
ATE Equipment
Data Acquisition
Industrial and Process Control Systems
Avionics
Redundant/Backup Systems
________________________________________________________________ Maxim Integrated Products
General Description
Applications
Fault-Protected, High-Voltage,
®
signal
MAX4631CSE
MAX4631CPE
MAX4631ESE
MAX4631EPE
MAX4631MJE
MAX4632CSE
MAX4632CPE
MAX4632ESE
MAX4632EPE
MAX4632MJE
MAX4633CSE
MAX4633CPE
MAX4633ESE
MAX4633EPE
MAX4633MJE
Dual Analog Switches
Fault Protection
Rail-to-Rail Signal Handling
No Power-Supply Sequencing Required
All Switches Off with Power Off
Output Clamped to Appropriate Supply Voltage
During Fault Condition; No Transition Glitch
85Ω (max) Signal Paths with ±15V Supplies
±4.5V to ±18V Dual Supplies
+9V to +36V Single Supply
Low Power Consumption: <6mW
Pin Compatible with Industry-Standard
DG401/DG403/DG405
TTL- and CMOS-Logic Compatible Inputs with
Single +9V to +15V, or ±15V Supplies
±40V with Power Off
±36V with ±15V Supplies (MAX4631/MAX4633)
±25V with ±15V Supplies (MAX4632)
PART
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
Ordering Information
PIN-PACKAGE
16 Narrow SO
16 Plastic DIP
16 Narrow SO
16 Plastic DIP
16 CERDIP
16 Narrow SO
16 Plastic DIP
16 Narrow SO
16 Plastic DIP
16 CERDIP
16 Narrow SO
16 Plastic DIP
16 Narrow SO
16 Plastic DIP
16 CERDIP
Features
1

Related parts for MAX4631

MAX4631 Summary of contents

Page 1

... On-resistance is 85Ω (max) at +25°C and is matched between switches to 6Ω (max). Off-leakage current is only 0.5nA at +25°C and 5nA at +85°C. The MAX4631 has two NO single-pole/single-throw (SPST) switches. The MAX4632 has two NO/NC single-pole/ double-throw (SPDT) switches. The MAX4633 has two NO double-pole/single-throw (DPST) switches ...

Page 2

... Limit forward diode current to maximum current rating. Note 2: NC_ and NO_ pins are fault protected (see Electrical Characteristics ). With power applied V-, signals on NC_ or NO_ exceeding ±25V (MAX4632) or ±36V (MAX4631/MAX4633) may damage the device. With signals on NC_ or NO_ exceeding ±40V may damage the device. ...

Page 3

ELECTRICAL CHARACTERISTICS—Dual Supplies (continued) (V+ = +15V -15V 0.8V, V INL_ INH_ PARAMETER SYMBOL COM_ Output Leakage Current, I Supplies On NO_ or NC_ Input Leakage I NO_ Current, Supplies On NO_ or NC_ Input Leakage ...

Page 4

... 1mA COM_ , V = 10V, COM_ 12V NO_ NC_ V = 10V, COM_ 12V NO_ NC_ MAX4631/ Applies with MAX4633 power NC_ MAX4632 Applies with power off = +25°C.) (Note MIN TYP MAX - - ±4.5 ± ...

Page 5

ELECTRICAL CHARACTERISTICS—Single Supply (continued) (V+ = +15V -15V 0.8V, V INL_ INH_ PARAMETER SYMBOL COM_ Output Leakage Current, I Supplies On NO_ or NC_ Input Leakage I NO_ Current, Supplies On NO_ or NC_ Input Leakage ...

Page 6

... GND Note 2: NC_ and NO_ pins are fault protected (see Electrical Characteristics ). With power applied V-, signals on NC_ or NO_ exceeding ±25V (MAX4632) or ±36V (MAX4631/MAX4633) may damage the device. With signals on NC_ or NO_ exceeding ±40V may damage the device. Note 3: The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column. ...

Page 7

A ON-RESISTANCE vs. V COM AND TEMPERATURE (SINGLE SUPPLY) 250 V+ = +12V 230 T = +125°C A 210 T = +25°C A 190 T = +85°C A 170 150 130 110 90 70 ...

Page 8

... TEMPERATURE (°C) INPUT OVERVOLTAGE vs. OUTPUT CLAMPING (±15V SUPPLIES) +20 +10 0 -10 -20 +20 0 -20 OUTPUT CLAMPING (20 s/div) PIN MAX4631 MAX4632 MAX4633 16, 9 16, 9 15, 10 15, 10 15, 10 2– — — — — ...

Page 9

... COM_ is limited to the appropriate polarity sup- ply voltage. Operation is identical for both fault polarities. The fault-protection extends to ±25V (MAX4632) or ±36V (MAX4631/MAX4633) with power on and ±40V with power off. The MAX4631/MAX4632/MAX4633 have a parallel N- channel and P-channel MOSFET switch configuration with _______________________________________________________________________________________ Fault-Protected, High-Voltage, Dual Analog Switches input voltage sensors ...

Page 10

... Fault-Protection Voltage and Power Off The maximum fault voltage on the NO_ (or NC_) pins is ±40V when the power is off. For the MAX4631/ MAX4633, with ±15V supplies, the highest voltage on NO_ (or NC_) can be +36V, and the lowest voltage on NO (or NC_) can be -36V. For the MAX4632, with ±15V ...

Page 11

... MAX4631 COM_ COM_ GND CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION. Figure 3. MAX4631 Break-Before-Make Interval ______________________________________________________________________________________ Fault-Protected, High-Voltage, Dual Analog Switches attenuation. At 10MHz, off-isolation is about -46dB in 50Ω systems, declining (approximately 20dB per decade) as frequency increases. Higher circuit imped- ance also diminishes off-isolation. Adjacent channel attenuation is about 3dB above that of a bare IC socket and is due entirely to capacitive coupling ...

Page 12

... Figure 5. COM_, NO_, and NC_ Capacitance 12 ______________________________________________________________________________________ Test Circuits/Timing Diagrams (continued) V IN_ V OUT V OUT C L 100pF V+ V+ NO_ MAX4631 NC_ MAX4632 MAX4633 COM_ GND OUT V IS THE MEASURED VOLTAGE DUE TO CHARGE- OUT TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. ...

Page 13

... Fault-Protected, High-Voltage, Dual Analog Switches Test Circuits/Timing Diagrams (continued) NETWORK ANALYZER COM_ V OUT MEAS 10nF V IN NO_, NC_ V OUT COM_ MAX4631 MAX4632 2.4V MAX4633 IN2 V- GND 10nF V- 50 OFF-ISOLATION = 20 log ON-LOSS = 20 log REF. 50 NETWORK ANALYZER 50 50 MEAS. REF ...

Page 14

... TOP VIEW COM1 NO1 1 16 N.C. IN1 N.C. GND 4 13 N.C. N.C. 5 MAX4631 12 N. N.C. IN2 7 10 COM2 NO2 8 9 DIP/SO MAX4631 LOGIC SWITCH 0 OFF ______________________________________________________________________________________ COM1 NO1 1 16 N.C. IN1 2 15 COM3 NC3 GND 4 13 NC4 N. MAX4632 COM4 N.C. IN2 ...

Page 15

Fault-Protected, High-Voltage, ______________________________________________________________________________________ Dual Analog Switches Package Information 15 ...

Page 16

... Fault-Protected, High-Voltage, Dual Analog Switches 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. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © ...

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