|Package | PIN:||WQFN (RTE) | 16|
|Temp:||Q (-40 to 125)|
- Sample rate: 2 MSPS
- Pin-compatible family: 12-, 10-, 8-bit
- High resolution, high throughput:
- ADS7947: 12 bit, 2.1 MSPS
- ADS7948: 10 bit, 2.57 MSPS
- ADS7949: 8 bit, 3 MSPS
- Excellent performance:
- No missing codes
- INL: 1 LSB(max)
- SNR: 72 dB (min)
- Low power:
- 7.5 mW at 2-MSPS operation
- Auto power-down atlower speeds:
- 3.8 mW at 500 kSPS
- 0.8 mW at 100 kSPS
- 0.16 mW at 20 kSPS
- Wide supply range:
- Analog: 2.7 V to 5.5 V
- Digital: 1.65 V toAVDD
- SPI-compatible serial interface
- Extended temperature range: –40°C to +125°C
- Tiny footprint: 3-mm × 3-mm WQFN
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Texas Instruments ADS7947SRTET
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 witha standard 16 clock data frame. In addition, the ADS7947 (12-bit) can be operated at 2.1 MSPS, theADS7948 (10-bit) at 2.57 MSPS, and the ADS7949 (8-bit) at 3 MSPS with a short data frame optimizedfor the number of clocks sufficient for conversion with no drop in performance. The devices featureboth outstanding dc precision and excellent dynamic performance. This family of pin-compatibledevices 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 thefull-scale input range up to 5 V. A simple SPI digital interface, with a digital supply that canoperate 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 powerconsumption.
Offered in a tiny 3-mm × 3-mm WQFN package, the ADS7947, ADS7948, and ADS7949 are fullyspecified over the extended temperature range of –40°C to +125°C and are suitable for a widevariety of data acquisition applications where high performance, low power, and small size arekey.