CS5526-BS

16Bit/20Bit, Multi-range ADC with 4Bit Latch

General Description

The 16-bit CS5525 and the 20-bit CS5526 are highly in tegrated  ∆ΣA/D converters which include an

instrumentation amplifier, a PGA programmable gain amplifier, eight digital filters, and self and system calibration circuitry.

Features

Delta-sigma A/D Converter

  - Linearity Error: 0.0015%FS

  - Noise-free Resolution: 18-bits

Bipolar/Unipolar Input Ranges

  - 25 mV, 55 mV, 100 mV, 1 V, 2.5 V and 5 V

Chopper Stabilized Instrumentation Amplifier

On-chip Charge Pump Drive Circuitry

4-bit Output Latch

Simple three-wire serial interface

  - SPI™ and Microwire™ Compatible

  - Schmitt Trigger on Serial Clock SCLK

Programmable Output Word Rates

  - 3.76 Sps to 202 Sps XIN = 32.768 kHz

  - 11.47 Sps to 616 Sps XIN = 100 kHz

Output Settles in One Conversion Cycle

Simultaneous 50/60 HzNoise Rejection

System and Self-calibration with Read/Write Registers

Single +5 V Analog Supply +3.0 V or +5 V Digital Supply

Low-power Mode Consumption: 4.9 mW

  - 1.8 mW in 1 V, 2.5 V, and 5 V Input Ranges