5962-9321401MEA Analog Devices, 5962-9321401MEA Datasheet

5962-9321401MEA

Manufacturer Part Number

5962-9321401MEA

Description

Manufacturer

Analog Devices

Datasheets

1.5962-9321401MEA.pdf (16 pages)

2.5962-9321401MEA.pdf (11 pages)

Specifications of 5962-9321401MEA

Case

DIP

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5962-9321401MEA

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FEATURES

±10 V tracking outputs

Kelvin connections

Low tracking error: 1.5 mV

Low initial error: 2.0 mV

Low drift: 1.5 ppm/°C

Low noise: 6 µV p-p

Flexible output force and sense terminals

High impedance ground sense

Wide body SOIC and CERDIP packages

GENERAL DESCRIPTION

The AD688 is a high precision ±10 V tracking reference. Low

tracking error, low initial error, and low temperature drift give

the AD688 reference absolute ±10 V accuracy performance

previously unavailable in monolithic form. The AD688 uses a

proprietary ion-implanted buried Zener diode, and laser wafer

drift trimming of high stability thin-film resistors to provide

outstanding performance.

The AD688 includes the basic reference cell and three

additional amplifiers. The amplifiers are laser-trimmed for low

offset and low drift and maintain the accuracy of the reference.

The amplifiers are configured to allow Kelvin connections to

the load and/or boosters for driving long lines or high current

loads, delivering the full accuracy of the AD688 where it is

required in the application circuit.

The low initial error allows the AD688 to be used as a system

reference in precision measurement applications requiring

12-bit absolute accuracy. In such systems, the AD688 can

provide a known voltage for system calibration; the cost of

periodic recalibration can therefore be eliminated. Furthermore,

the mechanical instability of a trimming potentiometer and the

potential for improper calibration can be eliminated by using

the AD688 and calibration software.

The AD688 is available in commercial version. Specified over

the −40

wide body 16-lead SOIC and 16-lead CERDIP packages,

Covered by Patent Number 4,644,253

Rev. B

Information furnished by Analog Devices is believed to be accurate and reliable.

However, no responsibility is assumed by Analog Devices for its use, nor for any

infringements of patents or other rights of third parties that may result from its use.

Specifications subject to change without notice. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

C to +85

C temperature range, the AD688 is offered in

PRODUCT HIGHLIGHTS

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

Tel: 781.329.4700

Fax: 781.461.3113

GAIN

ADJ

Precision Tracking. The AD688 offers precision tracking

±10 V Kelvin output connections with no external

components. Tracking error is less than 1.5 mV and fine-

trim is available for applications requiring exact symmetry

between the +10 V and −10 V outputs.

Accuracy. The AD688 offers 12-bit absolute accuracy

without any user adjustments. Optional fine-trim

connections are provided for applications requiring higher

precision. The fine-trimming does not alter the operating

conditions of the Zener or the buffer amplifiers and thus

does not increase the temperature drift.

Low output noise. Output noise of the AD688 is low—

typically 6 µV p-p. A pin is provided for broadband noise

filtering using an external capacitor.

REDUCTION

SENSE

GND

+IN

NOISE

FUNCTIONAL BLOCK DIAGRAM

NC = NO CONNECT

HIGH

LOW

Figure 1.

BAL

ADJ

±10 V Reference

A3 IN

AD688

High Precision

+10V OUT

SENSE

A4 IN

www.analog.com

AD688

+10V OUT

FORCE

–10V OUT

SENSE

–10V OUT

FORCE

–V

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