REV. D

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use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

a

CMOS Quad

Sample-and-Hold Amplifier

FUNCTIONAL BLOCK DIAGRAM

DGND

SMP04

FEATURES

Four Independent Sample-and-Holds

Internal Hold Capacitors

High Accuracy: 12 Bit

Very Low Droop Rate: 2 mV/s typ

TTL/CMOS Compatible Logic Inputs

Single or Dual Supply Applications

Monolithic Low Power CMOS Design

APPLICATIONS

Signal Processing Systems

Multichannel Data Acquisition Systems

Automatic Test Equipment

Medical and Analytical Instrumentation

Event Analysis

DAC Deglitching

The SMP04 offers significant cost and size reduction over

equivalent module or discrete designs. It is available in a

16-lead hermetic or plastic DIP and surface mount SOIC

packages. It is specified over the extended industrial tem-

perature range of –40

°C to +85°C.

GENERAL DESCRIPTION

The SMP04 is a monolithic quad sample-and-hold; it has four

internal precision buffer amplifiers and internal hold capacitors.

It is manufactured in ADI’s advanced oxide isolated CMOS

technology to obtain the high accuracy, low droop rate and fast

acquisition time required by data acquisition and signal process-

ing systems. The device can acquire an 8-bit input signal to

± 1/2 LSB in less than four microseconds. The SMP04 can

operate from single or dual power supplies with TTL/CMOS

logic compatibility. Its output swing includes the negative supply.

The SMP04 is ideally suited for a wide variety of sample-and-

hold applications, including amplifier offset or VCA gain adjust-

ments. One or more can be used with single or multiple DACs

to provide multiple setpoints within a system.

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

Tel: 781/329-4700

World Wide Web Site: http://www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 1998

SMP04*

*Protected by U.S. Patent No. 4,739,281.