Cirrus Logic Inc. CS5509-ASZ

Description
The CS5509 is a single-supply, 16-bit, serial-output CMOS A/D converter. It utilizes charge-balanced (delta-sigma) techniques to provide high-resolution measurements at output word rates up to 200 samples per second. The on-chip digital filter offers superior line rejection at 50Hz and 60Hz when operated from a 32.768 kHz clock (output word rate = 20 Sps).
The CS5509 features on-chip self-calibration circuitry that can be initiated at any time or temperature to ensure minimum offset and full-scale errors. Its low power consumption, high resolution, and small package size make it suitable for applications such as loop-powered transmitters, panel meters, weigh scales, and battery-powered instruments.

Features
Single-supply, 16-bit A/D converter
Delta-sigma A/D converter with no missing codes
Linearity error: ±0.0015% FS
Differential input with pin-selectable unipolar/bipolar ranges
Common mode rejection: 105 dB @ dc, 120 dB @ 50, 60 Hz
Either 5V or 3.3V digital interface
On-chip self-calibration circuitry
Output update rates up to 200/second
Ultra low power: 1.7 mW

Applications
Loop-powered transmitters
Panel meters
Weigh scales
Battery-powered instruments