ADS1234

(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

The ADS1232 and ADS1234 are precision analog-to-digital (A/D) converters featuring true 23.5 effective-bit performance and exceptional ease of use. Selectable gains of 1, 2, 64, or 128 allow full-scale differential input ranges of ±2.5V to ±19.5mV with a +5V reference. While the ADS1232 offers a two-channel differential input and a built-in temperature sensor, the ADS1234 features a four-channel differential input multiplexer. A very low-noise Gain-Amp features low differential input current to minimize errors when using high-impedance transducers. An on-board oscillator is provided for excellent 50Hz and 60Hz rejection without an external clock source. The devices also feature a low current driver to accommodate an external crystal; they also accept external clock sources for all applications.

All of the features of the ADS1232/ADS1234 are hard-wire selected, without software programming.Data is accessed over a simple serial interface compatible with popular microcontrollers such as the MSP430. The ADS1232 is available in the 24-pin TSSOP package, and the ADS1234 is available in the 28-pin TSSOP.