The AD630 series 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. This resistor may also be used to accurately configure multiplexer gains of 1, 2, 3 or 4. External feedback enables high gain or complex switched feedback topologies. The AD630 can be thought of as a precision op amp with two independent differential input stages and a precision comparator that is used to select the active front end. The rapid response time of this comparator coupled with the high slew rate and fast settling of the linear amplifiers minimize switching distortion. The AD630 is used in precision signal processing and instrumentation applications that require wide dynamic range. When used as a synchronous demodulator in a lock-in amplifier configuration, the AD630 can recover a small signal from 100dB of interfering noise.
● Recovers signal from 100dB noise
● 2MHz Channel bandwidth
● 45V/µs Slew rate
● Low crosstalk - -120dB at 1kHz, -100dB at 10kHz
● Pin programmable, closed-loop gains of ±1 and ±2
● 0.05% Closed-loop gain accuracy and match
● 350kHz Full power bandwidth
● 100µV Channel offset voltage (AD630)
