Synchronous demodulator features configurable analog filter

The ADA2200 synchronous demodulator incorporates a configurable analog filter enabling precision magnitude and phase measurements on analog signals in the presence of large noise sources. With input sampling rates up to 1 MHz, the IC enables demodulation of signal input bandwidths to 30 kHz with 0.009º phase detection sensitivity. 

The IC features low-power (390-uA at 3.3 V and fCLK = 500 kHz) and rail-to-rail operation, making it ideal for battery-powered low voltage systems. It has a configurable infinite impulse response (IIR) filter, low-pass finite impulse response (FIR) 1/8x decimation filter, a mixer with 0°/90° phase selection, a reference clock, and an A/D converter driver output. The chip operates over -40° to 85°C and costs just $2.95 ea/1,000.