Description

The CS5376A is a multi-function digital filter utilizing a low-power signal processing architecture to achieve efficient filtering for up to four ∆Σ modulators. By combining the CS5376A with CS3301A/02A differential amplifiers, CS5371A/72A ∆Σ modulators, and the CS4373A ∆Σ test DAC a synchronous, high-resolution, self-testing, multi-channel measurement system can be designed quickly and easily.

Digital filter coefficients for the CS5376A 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.

Features

● 1- to 4-channel Digital Decimation Filter

   ♦ Multiple On-chip FIR and IIR Coefficient Sets

   ♦ Programmable Coefficients for Custom Filters

   ♦ Synchronous Operation

● Selectable Output Word Rate

   ♦ 4000, 2000, 1000, 500, 333, 250 SPS

   ♦ 200, 125, 100, 50, 40, 25, 20, 10, 5, 1 SPS

● Digital Gain and Offset Corrections

● Test DAC Bit-stream Generator

   ♦ Digital Sine Wave Output

● Time Break Controller, General Purpose I/O

● Secondary SPI™ Port, Boundary Scan JTAG

● Microcontroller or EEPROM Configuration

● Small-footprint, 64-pin TQFP Package

● Low Power Consumption

   ♦ 9 mW per Channel at 500 SPS

● Flexible Power Supplies

   ♦ I/O Interface: 3.3 V or 5.0 V

   ♦ Digital Logic Core: 3.0 V, 3.3 V or 5.0 V