SPT9691

WIDE INPUT VOLTAGE, JFET COMPARATOR

APPLICATIONS

•

Automated Test Equipment

•

High-Speed Instrumentation

•

Window Comparators

•

High-Speed Timing

•

Line Receivers

•

High-Speed Triggers

•

Threshold Detection

•

Peak Detection

GENERAL DESCRIPTION

The SPT9691 is a high-speed, wide common mode voltage,

JFET input, dual comparator. It is designed for applications

that measure critical timing parameters in which wide com-

mon mode input voltages of -4.0 to +8.0 V are required.

Propagation delays are constant for overdrives greater than

200 mV.

JFET inputs reduce the input bias currents to the nanoamp

level, eliminating the need for input drivers and buffers in

BLOCK DIAGRAM

FEATURES

•

Common Mode Range -4.0 to +8.0 V

•

Low Input Bias Current <100 pA

•

Propagation Delay 2.5 ns (max)

•

Low Offset

±25 mV

•

Low Feedthrough and Crosstalk

•

Differential Latch Control

most applications. The device has differential analog inputs

and complementary logic outputs compatible with ECL sys-

tems. Each comparator has a complementary latch enable

control that can be driven by standard ECL logic.

The SPT9691 is available in 20-lead PLCC, 20-lead plastic

DIP and 20-contact LCC packages over the commercial

temperature range. It is also available in die form.

Q

B

GND

B

Q

A

A

Q

A

B

Q

DV

(B)

EE

AV

(B)

EE

B