The AD632 is an internally-trimmed monolithic four-quadrant multiplier/divider from Analog Devices. It has a maximum multiplying error of ±0.5% without external trims. The product features excellent supply rejection, low temperature coefficients and long term stability, even under adverse conditions. The AD632 is pin-for-pin compatible with the industry standard AD532 with improved specifications and a fully differential high impedance Z-input. The AD632 is capable of providing gains of up to X10, frequently eliminating the need for separate instrumentation amplifiers to precondition the inputs. The AD632 can be effectively employed as a variable gain divider.
The AD632 family are internally‑trimmed monolithic four‑quadrant multipliers/dividers offering differential high‑impedance inputs, low noise (90 µV rms, 10 Hz‑10 kHz) and gain up to ×10. Variants (A, B, S, T) provide different temperature ranges and error specifications, and are pin‑compatible with the AD532.
The device operates from a +15 V rated supply (8‑18 V operating range) with a quiescent current of about 4 mA. It is available in TO‑100 metal‑can and TO‑116 ceramic DIP packages, with options for MIL‑STD‑883 screening. Detailed specifications, pin configurations, performance curves and application examples are provided in the datasheet.
| Maximum multiplying error (AD632B) | +0.5 % FS at +25 °C |
|---|---|
| Noise spectral density | 0.8 µV/√Hz |
| Temperature range (standard) | –25 °C to +85 °C |
| Extended temperature range | –55 °C to +125 °C |
The AD632 can provide gains up to ×10.
The AD632B operates from –25 °C to +85 °C.
It has a low‑noise design of 90 µV rms between 10 Hz and 10 kHz.