CONNECTION DIAGRAM

Plastic Mini-DIP (N)

Cerdip (Q) and

Plastic SOIC (R) Packages

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

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

otherwise under any patent or patent rights of Analog Devices.

a

Dual Precision, 500 ns

Settling, BiFET Op Amp

AD746

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

Tel: 617/329-4700

Fax: 617/326-8703

FEATURES

AC PERFORMANCE

500 ns Settling to 0.01% for 10 V Step

75 V/ s Slew Rate

0.0001% Total Harmonic Distortion (THD)

13 MHz Gain Bandwidth

Internal Compensation for Gains of +2 or Greater

DC PERFORMANCE

0.5 mV max Offset Voltage (AD746B)

10

V/ C max Drift (AD746B)

175 V/mV min Open Loop Gain (AD746B)

2

V p-p Noise, 0.1 Hz to 10 Hz

Available in Plastic Mini-DIP, Cerdip and Surface

Mount Packages

Available in Tape and Reel in Accordance with

EIA-481A Standard

MIL-STD-883B Processing also Available

Single Version: AD744

APPLICATIONS

Dual Output Buffers for 12- and 14-Bit DACs

Input Buffers for Precision ADCs, Wideband

Preamplifiers and Low Distortion Audio Circuitry

PRODUCT DESCRIPTION

The AD746 is a dual operational amplifier, consisting of two

AD744 BiFET op amps on a single chip. These precision

monolithic op amps offer excellent dc characteristics plus rapid

settling times, high slew rates and ample bandwidths. In

addition, the AD746 provides the close matching ac and dc

characteristics inherent to amplifiers sharing the same

monolithic die.

The single pole response of the AD746 provides fast settling:

500 ns to 0.01%. This feature, combined with its high dc

precision, makes it suitable for use as a buffer amplifier for 12-

or 14-bit DACs and ADCs. Furthermore, the AD746’s low total

harmonic distortion (THD) level of 0.0001% and very close

matching ac characteristics make it an ideal amplifier for many

demanding audio applications.

The AD746 is internally compensated for stable operation as a

unity gain inverter or as a noninverting amplifier with a gain of 2

or greater. It is available in four performance grades. The

AD746J is rated over the commercial temperature range of 0 to

+70

°C. The AD746A and AD746B are rated over the industrial

temperature range of –40

°C to +85°C. The AD746S is rated

over the military temperature range of –55

°C to +125°C and is

available processed to MIL-STD-883B, Rev. C.

The AD746 is available in three 8-pin packages: plastic mini

DIP, hermetic cerdip and surface mount (SOIC).

PRODUCT HIGHLIGHTS

1. The AD746 offers exceptional dynamic response for high

speed data acquisition systems. It settles to 0.01% in 500 ns

and has a 100% tested minimum slew rate of 50 V/

µs

(AD746B).

2. Outstanding dc precision is provided by a combination of

Analog Devices’ advanced processing technology, laser wafer

drift trimming and well-matched ion-implanted JFETs. Input

offset voltage, input bias current and input offset current are

specified in the warmed-up condition and are 100% tested.

3. Differential and multichannel systems will benefit from the

AD746’s very close matching of ac characteristics. Input

offset voltage specs are fully tested and guaranteed to a

maximum of 0.5 mV (AD746B).

4. The AD746 has very close, guaranteed matching of input

bias current between its two amplifiers.

5. Unity gain stable version AD712 also available.