TI introduces smallest four-channel, 24-bit data converter

Dallas, TX—Texas Instruments Inc. has introduced what it reports is the industry’s smallest four-channel, 24-bit, Delta-Sigma analog-to-digital converter (ADC) as part of its Burr-Brown product line.


Dallas, TX— Texas Instruments Inc. has introduced what it reports is the industry’s smallest four-channel, 24-bit, Delta-Sigma analog-to-digital converter (ADC) as part of its Burr-Brown product line. Packaged in a small TSSOP-20 and consuming only 300

“ADS1224 delivers excellent performance at 240 SPS data rate, low power, and wide dynamic range in a miniature TSSOP package. This unmatched combination of performance, flexibility and size provides customers with a high-performance industrial ADC specifically designed for demanding measurements in portable and power-constrained applications,” says Jim Todsen, product line manager for TI’s oversampling data converters.

ADS1224 includes a four-channel differential input multiplexer, which accepts rail-to-rail inputs and features a temperature sensor for ambient temperature measurement. The optional input buffer allows direct connection to high-impedance sensors without bias current errors. Dedicated I/O pins directly control the input multiplexer, temperature sensor and input buffer, eliminating the need for onboard control registers.

When idling between measurements, ADS1224 quickly shuts down to standby mode, which dramatically reduces its overall power consumption to less than 1 uA. The converter’s two-wire interface connects to all popular microcontrollers, including TI’s MSP430, and provides necessary control for data retrieval, self-calibration and standby mode. Multiple devices can be synchronized for true simultaneous sampling. The device supports 2.7 V to 5.5 V analog and digital supplies, and has a maximum operating temperature range of -55 °C to +125 °C.

Control Engineering Daily News Desk
Jim Montague, news editor

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