DESCRIPTION
●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
