ADS7949 Series
8-Bit, 2 MSPS, Dual Channel, Pseudo-differential, uPower Serial SAR ADC
Manufacturer: Texas Instruments
Catalog
8-Bit, 2 MSPS, Dual Channel, Pseudo-differential, uPower Serial SAR ADC
Key Features
• Sample rate: 2 MSPSPin-compatible family: 12-, 10-, 8-bitHigh resolution, high throughput:ADS7947: 12 bit, 2.1 MSPSADS7948: 10 bit, 2.57 MSPSADS7949: 8 bit, 3 MSPSExcellent performance:No missing codesINL: 1 LSB (max)SNR: 72 dB (min)Low power:7.5 mW at 2-MSPS operationAuto power-down at lower speeds:3.8 mW at 500 kSPS0.8 mW at 100 kSPS0.16 mW at 20 kSPSWide supply range:Analog: 2.7 V to 5.5 VDigital: 1.65 V to AVDDSPI-compatible serial interfaceExtended temperature range: –40°C to +125°CTiny footprint: 3-mm × 3-mm WQFNSample rate: 2 MSPSPin-compatible family: 12-, 10-, 8-bitHigh resolution, high throughput:ADS7947: 12 bit, 2.1 MSPSADS7948: 10 bit, 2.57 MSPSADS7949: 8 bit, 3 MSPSExcellent performance:No missing codesINL: 1 LSB (max)SNR: 72 dB (min)Low power:7.5 mW at 2-MSPS operationAuto power-down at lower speeds:3.8 mW at 500 kSPS0.8 mW at 100 kSPS0.16 mW at 20 kSPSWide supply range:Analog: 2.7 V to 5.5 VDigital: 1.65 V to AVDDSPI-compatible serial interfaceExtended temperature range: –40°C to +125°CTiny footprint: 3-mm × 3-mm WQFN
Description
AI
The ADS7947, ADS7948, and ADS7949 are pin-compatible 12-bit, 10-bit, and 8-bit, 2-MSPS, analog-to-digital converters (ADCs), respectively. The devices operate at a 2-MSPS sample rate with a standard 16 clock data frame. In addition, the ADS7947 (12-bit) can be operated at 2.1 MSPS, the ADS7948 (10-bit) at 2.57 MSPS, and the ADS7949 (8-bit) at 3 MSPS 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.
The ADS7947, ADS7948, and ADS7949 support a wide analog supply range that supports the full-scale input range up to 5 V. A simple SPI digital interface, with a digital supply that can operate as low as 1.65 V, allows for easy interfacing to a wide variety of digital controllers. Automatic power-down can be enabled when operating at slower speeds to dramatically reduce power consumption.
Offered in a tiny 3-mm × 3-mm WQFN package, the ADS7947, ADS7948, and ADS7949 are fully specified over the extended temperature range of –40°C to +125°C and are suitable for a wide variety of data acquisition applications where high performance, low power, and small size are key.
The ADS7947, ADS7948, and ADS7949 are pin-compatible 12-bit, 10-bit, and 8-bit, 2-MSPS, analog-to-digital converters (ADCs), respectively. The devices operate at a 2-MSPS sample rate with a standard 16 clock data frame. In addition, the ADS7947 (12-bit) can be operated at 2.1 MSPS, the ADS7948 (10-bit) at 2.57 MSPS, and the ADS7949 (8-bit) at 3 MSPS 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.
The ADS7947, ADS7948, and ADS7949 support a wide analog supply range that supports the full-scale input range up to 5 V. A simple SPI digital interface, with a digital supply that can operate as low as 1.65 V, allows for easy interfacing to a wide variety of digital controllers. Automatic power-down can be enabled when operating at slower speeds to dramatically reduce power consumption.
Offered in a tiny 3-mm × 3-mm WQFN package, the ADS7947, ADS7948, and ADS7949 are fully specified over the extended temperature range of –40°C to +125°C and are suitable for a wide variety of data acquisition applications where high performance, low power, and small size are key.
