AD534 is a precision analog multiplier produced by AD. It uses internal trimming technology, with a maximum allowed error of ±0.25%. All input terminals (X, Y, and Z) are differential and high impedance, supporting [(X1-X2)(Y1-Y2)/10V]+Z2 transfer function. The input terminal supports ±10V input voltage, the gain can be adjusted by the external adjustable resistor, the gain range is 1-100, the noise design is 90µVrms, the working frequency is 10Hz to 10kHz, and has excellent long-term stability. AD534 is mainly used in high-quality analog signal processing, differential ratio and percentage computation, algebraic and trigonometric function synthesis, wideband, high peak rms-to-dc conversion, precise voltage controlled oscillator and filter.