SWITCHING AND CONTROL
A Greater Measure of Confidence
www.keithley.com
1.888.KEITHLEY (U.S. only)
MATRIX CONFIGURATION: Single 8 rows×12 columns.
Expanding the columns can be done internally by connecting
the rows of multiple 7174A cards together with coax jumpers.
CROSSPOINT CONFIGURATION: 2-pole Form A (Signal Guard).
CONNECTOR TyPE: 3-lug triax (Signal, Guard, Chassis).
MAXIMUM SIGNAL LEVEL:
Pin-to-pin or Pin-to-Chassis: 200V. 2A carry current.
CONTACT LIFE: Cold Switching: 108 closures.
OFFSET CURRENT: 100fA max., 10fA typical (with 0V applied
to inputs and outputs).
ISOLATION: Path (Signal to Signal): >2×1014W, 1pF.
Common (Signal to Chassis): >1014W, <10pF.
SETTLING TIME: <2.5s to 400fA (all pathways) after 10V applied
(typical).
CROSSTALK (1MHz, 50W Load): <–70dB.
INSERTION LOSS (1MHz, 50W Load): <–0.2dB typical.
3dB BANDWIDTH:
(50W Load, 50W Source): 30MHz typical.
(1MW Load, 50W Source): 40MHz typical.
RELAy SETTLING TIME: <1ms.
EMC: Conforms to European Union Directive 89/336/EEC.
SAFETy: Conforms to European Union Directive 73/23/
EEC (meets EN61010-1/IEC 1010).
ENVIRONMENT:
Offset Current and Path Isolation Specifications: 23°C,
<60% R.H.
Operating: 0° to 50°C, up to 35°C at 70% R.H.
Storage: –25° to +65°C.
MAXIMUM LEAKAGE:
Pin to Ground: 0.01pA/V. Pin to Pin: 0.005pA/V.
INSULATION RESISTANCE: 6.7×1013W minimum.
CAPACITANCE: (Guard Driven): Path to Ground: <10pF.
Path to Path: 1pF typical.
ACCESSORIES AVAILABLE
237-TRX-T 3-Lug Triax Tee Adapter
7078-TRX-TBC 3-Lug Triax to BNC Adapter
7078-TRX-3 3-Lug Triax Cable, 0.9m (3 ft.)
7078-TRX-10 3-Lug Triax Cable, 3m (10 ft.)
7078-TBC 3-Lug Female Triax Bulkhead Connector with Cap
SERVICES AVAILABLE
7174A-3Y-EW 1-year factory warranty extended to 3 years from
date of shipment
The Model 7174A Low Current Matrix Card is designed for semiconductor research, de vel-
op ment, and production applications requiring high quality, high performance switching
of I-V and C-V signals. The Model 7174A is ideal for use with Keithley Models 2635B and
2636B System SourceMeter® SMU Instruments, Model 4200-SCS, and the Agilent B1500.
The card’s configuration is 8 rows × 12 columns, with signal and guard switched at each
crosspoint. Offset cur rent has been reduced dra mat i cal ly to <100fA on all pathways.
Significant reductions in the level of parasitic ca pac i tanc es in the Model 7174A help speed
the process of making low level mea sure ments.
The Model 7174A provides an optimum so lu tion to switching the lower level signals com-
mon to today’s semiconductor char ac ter iza tion tests. The card’s low leakage and minimal
dielectric ab sorp tion ensure that key device mea sure ments can be performed many times
faster than with current switch ing technologies. Connections are 3-lug triax with the outer
shell connected to chassis for safety and noise shielding. The center con duc tor is fully
surrounded by the inner conducting shield allowing fully guard ed mea sure ments to be made with
higher iso la tion and improved speed and accuracy.
For applications that require making con nec tions to a large number of devices or test points, the
Model 7174A matrix can be ex pand ed with ad di tion al cards. On-card connectors are provided to
connect the rows (column ex pan sion) between other 7174A cards in adjacent slots of the Model 707B
switching mainframe. Eight female-to-female cables are provided with each 7174A to simplify ex pan-
sion. Up to six 7174A cards can be connected in a single 707A switch ing main frame to form an 8×72
or 12×60 matrix.
•Fast time to measurement
•Low leakage (<100fA offset on all
signal paths)
•2-pole switching, signal, and guard
•200V, 2A signal levels
•Designed for use with Keithley
Model 4200-SCS, 2635B and
2636B System SourceMeter® SMU
Instruments, and Agilent B1500
•Compatible with Models 707A,
707B, 708A, and 708B
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HGCHGC HGCHGC HGCHGC HGCHGC HGCHGC HGCHGC
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Columns
Rows
User
connections
and expansion
Ordering Information
7174A 8 ×12 High Speed,
Low Current Matrix
Accessories Supplied
Eight row interconnect cables for
card to card matrix expansion
7174A
High Speed, Low Leakage Current Matrix
8×12
Use with Models 707B, 708B, 707A, and 708A switching matrix mainframes
Use with Models 707B, 708B, 707A, and 708A switching matrix mainframes
