AD96685/AD96687

–3–

REV. C

FUNCTIONAL DESCRIPTION

Pin Name

Description

Positive supply terminal, nominally +5.0 V.

NONINVERTING INPUT

Noninverting analog input of the differential input stage. The NONINVERTING INPUT must be

driven in conjunction with the INVERTING INPUT.

INVERTING INPUT

Inverting analog input of the differential input stage. The INVERTING INPUT must be driven in

conjunction with the NONINVERTING INPUT.

LATCH ENABLE

In the “compare” mode (logic HIGH), the output will track changes at the input of the compara-

tor. In the “latch” mode (logic LOW), the output will reflect the input state just prior to the

comparator being placed in the “latch” mode. LATCH ENABLE must be driven in conjunction

with LATCH ENABLE for the AD96687.

LATCH ENABLE

In the “compare” mode (logic LOW), the output will track changes at the input of the comparator.

In the “latch” mode (logic HIGH), the output will reflect the input state just prior to the compara-

tor being placed in the “latch” mode. LATCH ENABLE must be driven in conjunction with

LATCH ENABLE

for the AD96687.

Negative supply terminal, nominally –5.2 V.

Q

One of two complementary outputs. Q will be at logic HIGH if the analog voltage at the

NONINVERTING INPUT is greater than the analog voltage at the INVERTING INPUT (pro-

vided the comparator is in the “compare” mode). See LATCH ENABLE and LATCH ENABLE

(AD96687 only) for additional information.

Q

One of two complementary outputs. Q will be at logic LOW if the analog voltage at the

NONINVERTING INPUT is greater than the analog voltage at the INVERTING INPUT

(provided the comparator is in the “compare” mode). See LATCH ENABLE and LATCH EN-

ABLE (AD96687 only) for additional information.

GROUND 1

One of two grounds, but primarily associated with the digital ground. Both grounds should be con-

nected together near the comparator.

GROUND 2

One of two grounds, but primarily associated with the analog ground. Both grounds should be con-

nected together near the comparator.

PIN DESIGNATIONS

AD96685BQ/TQ/BR

AD96687BQ/TQ/BR

AD96685BP

AD96685BH

AD96687BP

NC = NO CONNECT

NC = NO CONNECT

NC = NO CONNECT