Multi-Channel Decimation Filter 64-Pin TQFP

The CS5376A is a multi-function digital filter utilizing a low-power signal processing architecture to achieve efficient filtering for up to four ?S modulators. By combining the CS5376A with CS3301A/02A differential amplifiers, CS5371A/72A ?S modulators, and the CS4373A ?S 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. The CS5376A includes integrated peripherals to simplify system design: offset and gain corrections, a test DAC bit stream generator, a time-break controller, 12 general-purpose I/O pins, a secondary SPI port, and a boundary scan JTAG port.

• 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