The CS5378 is a multi-function digital filter utilizing a lowpower signal processing architecture to achieve efficient filtering for a delta-sigma-type modulator. By combining the CS5378 with a CS3301A/02A differential amplifier and a CS5373A modulator + test DAC, a synchronous high-resolution, self-testing, single-channel measurement system can be designed quickly and easily. Digital filter coefficients for the CS5378 FIR and IIR filters are included on-chip for a simple setup, or they can be programmed for custom applications. Selectable digital filter decimation ratios produce output word rates from 4000 SPS to 1 SPS, resulting in measurement bandwidths ranging from 1600 Hz down to 400 mHz when using the on-chip coefficient sets. The CS5378 includes integrated peripherals to simplify system design: a low-jitter PLL for standard clock or Manchester inputs, offset and gain corrections, a test DAC bit stream generator, a time break controller, and eight general-purpose I/O pins.