FEATURES

±100mV Specified Input Range

±125mV Full-Scale Range

95dB typ. CMR, 82dB typ. SNR

Adjustable Current Output for Sensor Biasing

Digital Output Compatible to ADS1202/03

Differential Digital Outputs

Separate 2.7V to 5.5V Digital Supply Pin

APPLICATIONS

Motor Control

Current Measurement

Hall Sensors

Bridge Sensors

Instrumentation

DESCRIPTION

The ADS1208 is a 2nd-order DS (delta-sigma) modu·

lator operating at a 10MHz clock rate. The specified

input range is ±100mV, optimized for current

measurement with a Hall sensor, especially in motor

control applications. The ADS1208 contains a

programmable current source for sensor biasing and

has integrated input buffers for fast settling of the

sample capacitors; it also requires only a minimum of

external components. The differential analog input

offers low noise and excellent common-mode rejection.