ADS7949SRTET

12月10日/ 8-位2MSPS ，双通道单极伪差分超低功耗SAR模拟数字转换器 12/10/8-Bit 2MSPS, Dual-Channel Unipolar Pseudo-Differential Ultralow-Power SAR Analog-to-Digital Converters

DESCRIPON

The ADS7947/8/9 are 12-bit, 10-bit, and 8-bit 2MSPS analog-to-digital converters ADCs, respectively. Devices operate at 2MSPS sample rate with a standard 16 clock data frame. In addition, it is possible to operate the ADS7947 12-bit at 2.1MSPS, the ADS7948 10-bit at 2.57MSPS, and the ADS7949 8-bit at 3MSPS with a short data frame optimized for the number of clocks sufficient for conversion with no drop in performance. The devices feature both outstanding dc precision and excellent dynamic performance, this family of pin-compatible devices includes a two-channel input multiplexer and a low-power successive approximation register SAR ADC with an inherent sample-and-hold S/H input stage.

FEATURES

• Sample Rate: 2MSPS

• Pin-Compatible Family: 12/10/8-Bit

• Outstanding Performance:

   – No Missing Codes

   – INL: 1LSB max

   – SNR: 72dB min

• Low Power:

   – 7.5mW at 2MSPS Operation

   – Auto Power-Down at Lower Speeds:

   – 3.8mW at 500kSPS

   – 0.8mW at 100kSPS

   – 0.16mW at 20kSPS

• Wide Supply Range:

   – Analog: 2.7V to 5.5V

   – Digital: 1.65V to AVDD

• Simple Serial Interface SPI

• Fully Specified from –40°C to +125°C

• Tiny Footprint: 3mm × 3mm QFN

APPLICATIONS

• Communication Systems

• Optical Networking

• Medical Instrumentation

• Battery-Powered Equipment

• Data Acquisition Systems