Rail-to-Rail, Fast, Low Power 2.5 V to 5.5 V,

Single-Supply TTL/CMOS Comparator

Data Sheet

ADCMP608

FEATURES

Low glitch CMOS-/TTL-compatible output stage

40 ns propagation delay

Low power: 1 mW at 2.5 V

Shutdown pin

Power supply rejection > 60 dB

−40°C to +125°C operation

APPLICATIONS

High speed instrumentation

Clock and data signal restoration

Logic level shifting or translation

High speed line receivers

Threshold detection

Peak and zero-crossing detectors

High speed trigger circuitry

Pulse-width modulators

Current-/voltage-controlled oscillators

FUNCTIONAL BLOCK DIAGRAM

Figure 1.

GENERAL DESCRIPTION

The ADCMP608 is a fast comparator fabricated on XFCB2, an

Analog Devices, Inc. proprietary process. This comparator is

exceptionally versatile and easy to use. Features include an input

compatible output drivers, and shutdown inputs. The device

offers 40 ns propagation delays driving a 15 pF load with 10 mV

overdrive on 500 µA typical supply current.

A flexible power supply scheme allows the device to operate

with a single +2.5 V positive supply and a −0.2 V to + 2.7 V

input signal range up to a +5.5 V positive supply with a −0.2 V

to +5.7 V input signal range.

The TTL-/CMOS-compatible output stage is designed to drive

up to 15 pF with full rated timing specifications and to degrade

in a graceful and linear fashion as additional capacitance is

added. The input stage of the comparator offers robust protection

against large input overdrive, and the outputs do not phase

reverse when the valid input signal range is exceeded.

The ADCMP608 is available in a tiny 6-lead SC70 package with

a single-ended output and a shutdown pin.

ADCMP608

NONINVERTING

INPUT

INVERTING

INPUT

Q OUTPUT

+

–

Rev. B

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