TI Introduces Precision Current Shunt Modulator for Motor Control

1/6/2003 - Extending its portfolio of high-performance motor control converters, Texas Instruments (TI) Incorporated (NYSE: TXN) 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 ADS1202 features high accuracy, high resolution and low noise to meet designers' requirements for precision current measuring and digitizing which improves system-level performance," said Miroslav Oljaca, strategic marketing manager for TI's motor control converter products.

The differential inputs of the ADS1202 are ideal 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.

Available Today
The ADS1202 comes in a TSSOP-8 package, and is available now from TI and its authorized distributors. Suggested resale pricing is $2.95 in 1,000 piece quantities.

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