Rail-to-Rail, Very Fast, 2.5 V to 5.5 V,

Single-Supply LVDS Comparators

ADCMP604/ADCMP605

FEATURES

Low glitch LVDS-compatible output stage

1.6 ns propagation delay

37 mW at 2.5 V

Shutdown pin

Single-pin control for programmable hysteresis and latch

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

Pulse spectroscopy

High speed line receivers

Threshold detection

Peak and zero-crossing detectors

High speed trigger circuitry

Pulse-width modulators

Current-/voltage-controlled oscillators

Automatic test equipment (ATE)

FUNCTIONAL BLOCK DIAGRAM

INPUT

INPUT

Q OUTPUT

(ADCMP605 ONLY)

Q OUTPUT

LE/HYS INPUT

(ADCMP605

ONLY)

ADCMP604/

ADCMP605

LVDS

Figure 1.

GENERAL DESCRIPTION

The ADCMP604 and ADCMP605 are very fast comparators

fabricated on Analog Devices, Inc.’s, proprietary XFCB2

process. This family of comparators is exceptionally versatile

2 V, low noise, LVDS-compatible output drivers,

and TTL/CMOS latch inputs with adjustable hysteresis and/or

shutdown inputs.

The devices offer 1.5 ns propagation delays with 1 ps rms

random jitter (RJ). Overdrive and slew rate dispersion are

typically less than 50 ps.

A flexible power supply scheme allows the devices to operate

with a single +2.5 V positive supply and a −0.5 V to +3.0 V

input signal range up to a +5.5 V positive supply with a −0.5 V

to +6 V input signal range. Split input/output supplies, with no

sequencing restrictions on the ADCMP605, support a wide

input signal range with greatly reduced power consumption.

The LVDS-compatible output stage is designed to drive any

standard LVDS input. The comparator input stage offers robust

protection against large input overdrive, and the outputs do not

phase reverse when the valid input signal range is exceeded.

High speed latch and programmable hysteresis features are also

provided in a unique single-pin control option.

The ADCMP604 is available in a 6-lead SC70 package. The

ADCMP605 is available in a 12-lead LFCSP.

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other

rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

Fax: 781.461.3113

©2006 Analog Devices, Inc. All rights reserved.