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12-Bit, 2 MSPS, Dual Channel, Pseudo-differential uPower Serial SAR ADC

Availability: 5,390


Package | PIN: WQFN (RTE) | 16
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $3.18
10-24 $2.86
25-99 $2.67
100-249 $2.34
250-499 $2.19
500-749 $1.86
750-999 $1.57
1000+ $1.50


  • 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  ADS7947SRTER

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.