Digital Filter 28-Pin SSOP

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 CS537 8 with a CS33 01A/02A di fferential a mplifier and a CS5373A modulator + test DAC, a synchronous high-resolution, self- testing, sin gle-channel m easurement 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 ap plications. Selectable digital filter decimation ratios produce output word rates from 4000 SPS to 1 SPS, resulting in measurement bandwidths ra nging fro m 16 00 Hz down to 400 mHz whe n using the on-chip coefficient sets.The CS5378 includes integrated peripherals to simplify system d esign: a low- jitter PL L for standard clo ck or Manchester inpu ts, offset and gain co rrections, a test DAC bit stream generator, a tim e break controller, and eight general-purpose I/O pins.

• Single-channel Digital Decimation Filter
  • Multiple On-chip FIR and IIR Coefficient Sets
  • Programmable Coefficients for Custom Filters
  • Synchronous Operation
• Integrated PLL for Clock Generation
  • 1.024 MHz, 2.048 MHz, or 4.096 MHz Input
  • Standard Clock or Manchester Input
• 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
• Microcontroller or EEPROM Configuration
• Small-footprint, 28-pin SSOP Package
• Low Power Consumption
  • 16 mW at 500 SPS OWR
• Flexible Power Supplies
  • I/O Interface and PLL: 3.3 V or 5.0 V
  • Digital Logic Core: 2.5 V, 3.3 V or 5.0 V