ADS7863A

ADS7863A www.ti.com SBAS610 – DECEMBER 2013 Dual, 2-MSPS, 12-Bit, 2 + 2 or 3 + 3 Channel, Simultaneous-Sampling, Analog-to-Digital Converter Check for Samples: ADS7863A FEATURES 1 2 Four Fully- or Six Pseudo-Differential Inputs SNR: 71 dB THD: –81 dB Programmable and Buffered Internal 2.5-V Reference Flexible Power-Down Features Variable Power-Supply Ranges: 2.7 V to 5.5 V Low-Power Operation: 45 mW at 5 V Operating Temperature Range: –40°C to +125°C Pin-Compatible with the ADS7861 and ADS8361 (SSOP Package) APPLICATIONS Motor Control Multi-Axis Positioning Systems Three-Phase Power Control DESCRIPTION The ADS7863A is a dual, 12-bit, 2-MSPS, analog-todigital converter (ADC) with four fully-differential or six pseudo-differential input channels grouped into two pairs for high-speed, simultaneous signal acquisition. Inputs to the sample-and-hold (S/H) amplifiers are fully differential and are maintained differential to the ADC input. This architecture provides excellent common-mode rejection of 72 dB at 100 kHz, which is a critical performance characteristic in noisy environments. The device is pin-compatible with the ADS7861, but offers additional features such as a programmable reference output, flexible supply voltage (2.7 V to 5.5 V for AVDD and BVDD), a pseudo-differential input multiplexer with three channels per ADC, and several power-down features. The device is offered in an SSOP-24 and a 4-mm × 4-mm QFN-24 package. The device is specified o...