ADS7865是TI公司的一款精密ADC(<=10MSPS)产品，ADS7865是双路、2MSPS、12 位、3+3 或 2+2 通道、同步采样 ADC，本页介绍了ADS7865的产品说明、应用、特性等，并给出了与ADS7865相关的TI元器件型号供参考。
ADS7865 - 双路、2MSPS、12 位、3+3 或 2+2 通道、同步采样 ADC - 精密ADC(<=10MSPS) - 模数转换器 - TI公司（Texas Instruments，德州仪器）
The ADS7865 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 differentially 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 ADS7865 is pin-compatible with the ADS7862, but offers additional features such as a programmable channel sequencer and 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 ADS7865 is offered in a TQFP-32 package. It is specified over the extended operating temperature range of –40°C to +125°C.
- Six Pseudo- or Four Fully Differential Inputs
- SNR: 71.7dB, THD: –87dB
- Programmable Channel Sequencer
- Programmable and Buffered Internal 2.5V Reference
- Flexible Power-Down Features
- Variable Power-Supply Ranges: 2.7V to 5.5V
- Low-Power Operation: 44mW Maximum at 5V
- Operating Temperature Range: –40°C to +125°C
- Pin-Compatible Upgrade for the ADS7862
