Small-size low-power SAR ADC offers excellent offset specifications and temperature range

The ADS7046 device from Texas Instruments belongs to a group of pin-to-pin compatible, high-speed, low-power, single-channel SAR-type ADCs. The device family includes multiple resolutions, throughputs, and analog input variants. The device is a 12-bit, 3-MSPS SAR ADC that supports a single-ended input in the range of 0 V to AVDD, for AVDD in the range of 2.35V to 3.6V. The internal offset calibration feature keeps excellent offset specifications over the entire AVDD and temperature operating range. The device maintains an SPI-compatible serial interface that is controlled by the CS and SCLK signals. The input signal is sampled with the CS falling edge, and SCLK is used for conversion and serial data output. The device supports a wide digital supply range (1.65V to 3.6V), enabling direct interfacing to a variety of host controllers. The ADS7046 complies with the JESD8-7A standard for a normal DVDD range (1.65V to 1.95V). The device is available in an eight-pin, small, X2QFN package and is specified over the extended industrial temperature range (–40C to +12C). The small form-factor and extremely-low power consumption make this device suitable for space-constrained and battery-powered applications that require high-speed, high-resolution data acquisition.