GENERAL DESCRIPTION

The AD534 is a monolithic laser trimmed four-quadrant multiplier divider having accuracy specifications previously found only in expensive hybrid or modular products. A maximum multiplication error of ±0.25% is guaranteed for the AD534L without any external trimming. Excellent supply rejection, low temperature coefficients and long-term stability of the on-chip thin film resistors and buried Zener reference preserve accuracy even under adverse conditions of use. It is the first multiplier to offer fully differential, high impedance operation on all inputs, including the Z input, a feature that greatly increases its flexibility and ease of use. The scale factor is pretrimmed to the standard value of 10.00 V; by means of an external resistor, this can be reduced to values as low as 3 V.

FEATURES

Pretrimmed to ±0.25% maximum 4-quadrant error (AD534L)

All inputs (X, Y, and Z) differential, high impedance for

[(X1 − X2)(Y1 − Y2)/10 V] + Z2 transfer function

Scale factor adjustable to provide up to ×100 gain

Low noise design: 90 μV rms, 10 Hz to10 kHz

Low cost, monolithic construction

Excellent long-term stability

APPLICATIONS

High quality analog signal processing

Differential ratio and percentage computations

Algebraic and trigonometric function synthesis

Wideband, high crest rms-to-dc conversion

Accurate voltage controlled oscillators and filters

Available in chip form