CS5543

·Delta-Sigma Architecture:
   - 5th Order Modulator
   - 22-Bit Resolution
·dc Accuracy (fBW = 250Hz):
   - Integral Linearity: ±0.001 % F.S.
   - Differential Linearity: ±0.5 LSBs
   - RMS Noise: 1.1 pARMS
·Pin Selectable Input Range:
   - ±400 nA to ±2.5 µA Full Scale
·8-Channel Digital FIR Filter
·Self-calibration of Offset and Gain
·Low Power: 50 mW /ch for 8-ch system

The CS5542 / CS5543 chip set is designed to be a complete current measurement data acquisition system. The CS5542 is a 22-Bit, 2-channel, 5th-order delta sigma modulator. The CS5543 is a monolithic CMOS, 8- channel digital FIR filter designed to be used with up to four CS5542's forming an 8-channel system. The complete system is capable of cascading up to 1024 channels.

The system CS5543 supports 22-bit measurement resolution with output conversion rates up to 1 kHz per channel. JTAG boundary-scan capability is available to facilitate self-test at the system level.

Potential applications for the CS5542/CS5543 system are environmental monitoring, process control systems, color sensing, light measurement, chemical analyzers