TUCSON, Ariz. -- Burr-Brown Corp. introduced a 24-bit analog-to-digital converter capable of handling data rates of 40 kilohertz. The ADS1252 converter features a serial interface for microcontrollers and digital signal processors (DSP) in an SO-8 package.
The ADS1252 combines traditional segmentation and reassembly (SAR) conversion with the high resolution of delta-sigma converters, said Don Travers, strategic marketing manager at Burr-Brown. "As a result, the ADS1252 has no direct competition," he claimed. The Tucson company is aiming the new A-to-D converter at industrial process control, medical analysis systems, and test and measurement applications.
The chip consists of a fourth-order delta-sigma modulator, a digital filter, control logic, and serial interface, the company said. It operates from a nominal 5-volt supply and is guaranteed to consume less than 50 mW of power, according to Burr-Brown. The device also has a flexible, two-wire synchronous serial interface for low-cost isolation, the company said.
Other key specifications include 0.0015% linearity error and 2.8 parts per million (ppm) of rms noise (effective resolution of 18 bits up to 40 kHz).
In quantities of 1,000, the ADS1252 costs $5.25 each. The parts are now available from stock.