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. The wide spectrum of applications and the availability of several grades commend this multiplier as the first choice for all new designs. The AD534J （±1% maximum error）， AD534K （±0.5% maximum）， and AD534L （±0.25% maximum） are specified for operation over the 0°C to +70°C temperature range. The AD534S （±1% maximum） and AD534T （±0.5% maximum） are specified over the extended temperature range， ?55°C to +125°C. All grades are available in hermetically sealed TO-100 metal cans and SBDIP packages. AD534K， AD534S， and AD534T chips are also available.