ADS7863

ADS7863 www.ti.com SBAS383E – JUNE 2007 – REVISED JANUARY 2011 Dual, 2MSPS, 12-Bit, 2 + 2 or 3 + 3 Channel, Simultaneous Sampling ANALOG-TO-DIGITAL CONVERTER Check for Samples: ADS7863 FEATURES 1 2 Four Fully- or Six Pseudo-Differential Inputs SNR: 71dB, THD: –81dB Programmable and Buffered Internal 2.5V Reference Flexible Power-Down Features Variable Power-Supply Ranges: 2.7V to 5.5V Low-Power Operation: 45mW at 5V Operating Temperature Range: –40°C to +125°C Pin-Compatible with ADS7861 and ADS8361 (SSOP package) APPLICATIONS Motor Control Multi-Axis Positioning Systems Three-Phase Power Control DESCRIPTION The ADS7863 is a dual, 12-bit, 2MSPS, analog-to-digital 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 input of the ADC. This architecture provides excellent common-mode rejection of 72dB at 100kHz, which is a critical performance characteristic in noisy environments. The ADS7863 is pin-compatible with the ADS7861, but offers additional features such as a programmable reference output, flexible supply voltage (2.7V to 5.5V for AVDD and BVDD), a pseudo-differential input multiplexer with three channels per ADC, and several power-down features. The ADS7863 is offered in an SSOP-24 and a 4x4mm QFN-24 package. It is specified over the...