Part Number: AD734AQ

Function: 10 MHz, Four-Quadrant Multiplier/Divider

Package: 14-lead CERDIP and a 14-lead PDIP Type

Manufacturer: Analog Devices

Image and Pinouts:

## Description

The **AD734AQ** is an accurate high speed, four-quadrant analog multiplier that is pin compatible with the industry-standard AD534 and provides the transfer function W = XY/U. The AD734 provides a low impedance voltage output with a full power (20 V p-p) bandwidth of 10 MHz. Total static error (scaling, offsets, and nonlinearities combined) is 0.1% of full scale. Distortion is typically less than −80 dBc and guaranteed.

The low capacitance X, Y, and Z inputs are fully differential. In most applications, no external components are required to define the function. The internal scaling (denominator) voltage, U, is 10 V, derived from a buried-Zener voltage reference. A new feature provides the option of substituting an external denominator voltage, allowing the use of the AD734 as a two-quadrant divider with a 1000:1 denominator range and a signal bandwidth that remains 10 MHz to a gain of 20 dB, 2 MHz at a gain of 40 dB, and 200 kHz at a gain of 60 dB, for a gain-bandwidth product of 200 MHz.

The advanced performance of the AD734 is achieved by a combination of new circuit techniques, the use of a high speed complementary bipolar process, and a novel approach to laser trimming based on ac signals rather than the customary dc methods. The wide bandwidth (>40 MHz) of the AD734’s input stages and the 200 MHz gain-bandwidth product of the multiplier core allow the AD734 to be used as a low distortion demodulator with input frequencies as high as 40 MHz as long as the desired output frequency is less than 10 MHz.

## Features

1. High accuracy : 0.1% typical error

2. High speed

(1) 10 MHz full power bandwidth

(2) 450 V/μs slew rate

(3) 200 ns settling to 0.1% at full power

3. Low distortion : −80 dBc from any input

4. Third-order IMD typically −75 dBc at 10 MHz

5. Low noise

(1) 94 dB SNR, 10 Hz to 20 kHz

(2) 70 dB SNR, 10 Hz to 10 MHz

6. Direct division mode

7. 2 MHz BW at gain of 100

Applications:

1. High performance replacement for AD534

2.Multiply, divide, square, square root

3. Modulators, demodulators

4. Wideband gain control, rms-to-dc conversion

Other data sheets are available within the file: AD734AN, AD734ANZ, AD734BN, AD734BNZ

## AD734AQ Datasheet PDF Download