Current shunt modulator

Texas Instruments today introduced a current shunt, delta-sigma modulator from the company’s Burr-Brown product line featuring 16-bit resolution and 80dB dynamic range.

The ADS1202 provides precision current measurements for motor control applications, as well as industrial process control, instrumentation, smart transmitters, portable instruments and weigh scales.

The differential inputs of the ADS1202 are suitable for direct connections to current shunt resistors, transducers or low-level signals. With the appropriate digital filter and modulator rate, the device can be used to achieve 16-bit analog-to-digital conversion with no missing codes.

The ADS1202 offers a +/-250mV input range with a single +5V supply. Other features include 2% gain error; 1mV offset voltage, +/-3 LSB linearity (at 16-bit resolution) and a flexible serial interface with four different modes.

The ADS1202 comes in a TSSOP-8 package, and is available now. Suggested resale pricing is $2.95 in 1,000 piece quantities.

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