Synchronous Demodulator and Configurable Analog Filter. The ADA2200 is a sampled analog technology synchronous demodulator for signal conditioning in industrial, medical, and communications applications. The ADA2200 is an analog input, sampled analog output device. The signal processing is performed entirely in the analog domain by charge sharing among capacitors, which eliminates the effects of quantization noise and rounding errors. The ADA2200 includes an analog domain, low-pass decimation filter, a programmable infinite impulse response (IIR) filter, and a mixer. This combination of features reduces ADC sample rates and lowers the downstream digital signal processing requirements.