Modulator 24-Pin SSOP

The CS5372 is two-channel, high dynamic range, fourth-order ?S modulators intended for geophysical and sonar applications. Used in combination with the CS5376A or CS5378 digital filters, a unique high-resolution A/D measurement system results. The CS5372 have high dynamic range (127 dB @ 215 Hz bandwidth) and low total harmonic distortion (typically -118 dB THD), with very low power consumption per channel. In normal mode (LPWR=0, MCLK=2.048MHz), power consumption is 25 mW per channel, and in low-power mode (LPWR=1, MCLK=1.024MHz), power consumption is 15 mW per channel. Each modulator can be independently powered down to 1 mW per channel, and by halting the input clock, they will enter a micropower state using only 10 µW per channel. The modulators generate an oversampled serial bit stream at 512 kbits per second when operated from a clock frequency of 2.048 MHz. They are available in a small 24-pin SSOP package, providing exceptional performance in a very small footprint.

• Fourth-order ?S Architecture
• Clock-jitter-tolerant Architecture
• Input Voltage: 5 Vpp Fully Differential
• High Dynamic Range
  • 127 dB SNR @ 215 Hz BW (2 ms Output)
  • 124 dB SNR @ 430 Hz BW (1 ms Output)
• Low Total Harmonic Distortion
  • -118 dB THD Typical, -112 dB THD Maximum
• Low Power Consumption
  • Normal Mode: 25 mW per Channel
  • Low-power Mode: 15 mW per Channel
• Small Footprint, 24-pin SSOP Package
• Single- or Multi-channel System Support
  • 2-channel System: CS5372
  • 3-channel System: CS5371 + CS5372
  • 4-channel System: CS5372 + CS5372
• Single or Dual Power Supply Configurations
  • VA+ = +5 V; VA- = 0 V; VD = +3.3 V to +5 V
  • VA+ = +2.5 V;VA- = -2.5 V;VD = +3.3 V