AD630 is a high precision balanced modulator/demodulator that combines a flexible commutating architecture with the accuracy and temperature stability afforded by laser wafer trimmed thin film resistors. Its signal processing applications include balanced modulation and demodulation, synchronous detection, phase detection, quadrature detection, phase-sensitive detection, lock-in amplification, and square wave multiplication. The product features precision closed-loop gains and 0.05% accuracy.
The AD630 is a high‑precision balanced modulator/demodulator that offers pin‑programmable closed‑loop gains of +1 and +2, 0.05 % gain accuracy, and up to 100 dB channel separation. It is suited for lock‑in amplification, phase‑sensitive detection, and square‑wave multiplication.
The document provides electrical specifications, thermal limits, pin configurations, typical performance graphs, and example circuit topologies, along with ordering information and handling cautions for the AD630 family of devices.
| Open‑Loop Gain (typ) | 110 dB |
|---|---|
| Closed‑Loop Gain Error | 0.05 % |
| Unity Gain Bandwidth | 2 MHz |
| Channel Separation @10 kHz | 100 dB |
The AD630 provides 100 dB channel separation at 10 kHz.
The unity‑gain bandwidth is specified as 2 MHz.
The AD630 offers pin‑programmable closed‑loop gains of +1 and +2 with 0.05 % accuracy.