器件名称: ADS7863IRGER
功能描述: Dual, 2MSPS, 12-Bit, 2 + 2 or 3 + 3 Channel, Simultaneous Sampling ANALOG-TO-DIGITAL CONVERTER
文件大小: 1216.83KB 共40页
简 介:AD
S7
ADS7863
863
AD S78 63
www.ti.com
SBAS383B – JUNE 2007 – REVISED MARCH 2008
Dual, 2MSPS, 12-Bit, 2 + 2 or 3 + 3 Channel, Simultaneous Sampling ANALOG-TO-DIGITAL CONVERTER
1
FEATURES
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 extended operating temperature range of –40°C to +125°C.
SAR AVDD CHA0+ CHA0CHA1+ CHA1Input MUX S/H CDAC Comparator BVDD SDOA SDOB M0
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 ADS7……
