Datasheet

1.888.KEITHLEY (U.S. only)
www.keithley.com
13
SWITCHING AND CONTROL
A GREATER MEASURE OF CONFIDENCE
Model 3724 Specifications
MULTIPLEXER CONFIGURATION: Two independent 1×30, 2-pole multiplexers. Banks can be
connected together via relay creating a single 1×60 multiplexer. Banks can be isolated from the
backplane by relays. Card can be configured for 2- and 4-wire.
CONTACT CONFIGURATION: 2-pole form A.
CONNECTOR TYPE: Two 78-pin male D-shells.
MODEL 3724-ST SCREW TERMINAL OPTION: #22AWG typical wire size with 0.062 inch O.D.
124 conductors maximum. 16 AWG maximum wire size with 0.092 inch O.D. 36 conductor per
card maximum.
MAXIMUM SIGNAL LEVEL: 200V DC or 141V RMS between any terminal, 0.1A switched (0.1A
carry), 800mW.
COMMON MODE VOLTAGE: 300V DC or RMS between any terminal and chassis.
VOLT-HERTZ LIMIT: 10
7
.
CONTACT LIFE:
Solid State: > unlimited.
EMR (Backplane): >1×10
8
operations @ 5V, 10mA.
1×10
5
operations @ max. signal level.
Dual 1×30
1
Single 1×60
1, 2
Channel Resistance
<62W (54W @ 23ºC) <64W (58W @ 23ºC)
Contact Potential (differential)
<±2 μV <±2.5 μV
Offset Current
<10 nA
(<±100 pA @
23ºC/60% R.H.)
<10 nA
(<±100 pA @
23ºC/60% R.H.)
Isolation
Differential
10
9
W, 500 pF 10
9
W, 1100 pF
Bank-Bank
10
9
W, 100 pF
—
CH–CH
10
9
W, 125 pF 10
9
W, 125 pF
Common Mode
10
9
W, 150 pF 10
9
W, 700 pF
Crosstalk CH-CH
300 kHz
–40 dB –40 dB
1 MHz
–30 dB –30 dB
Bandwidth
2 MHz 1 MHz
NOTES
1. Connections made using 3724-ST.
2. 3706A mainframe with all DMM backplane relays disconnected. Maximum two card backplane relays closed.
3724
Dual 1×30 FET Multiplexer Card
60 differential channels, automatic CJC with 3724-ST accessory
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
Output 1
HI
LO
Channel 1
HI
LO
Channel 30
Channels 2–29
Multiplexer Bank 1
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
Output 2
HI
LO
Channel 31
HI
LO
Channel 60
Channels 32–59
Multiplexer Bank 2
Analog Backplane 1
(DMM Input)
Analog Backplane 2
(DMM Sense)
Analog Backplane 3
Analog Backplane 4
Analog Backplane 5
Analog Backplane 6
Analog Backplane 1
(DMM Input)
Analog Backplane 2
(DMM Sense)
Analog Backplane 3
Analog Backplane 4
Analog Backplane 5
Analog Backplane 6
To Series 3700A Mainframe Analog Backplane
Model 3724 specifications Model 3724 specifications