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ADS7947

Texas Instruments
Part Number ADS7947
Manufacturer Texas Instruments
Description SAR ADC
Published Sep 11, 2020
Detailed Description Product Folder Order Now Technical Documents Tools & Software Support & Community ADS7947, ADS7948, ADS7949 SLAS708...
Datasheet PDF File ADS7947 PDF File

ADS7947
ADS7947


Overview
Product Folder Order Now Technical Documents Tools & Software Support & Community ADS7947, ADS7948, ADS7949 SLAS708A – SEPTEMBER 2010 – REVISED SEPTEMBER 2019 ADS794x Ultra-Low Power, 12-, 10-, and 8-Bit, Dual-Channel, SAR ADCs 1 Features •1 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 at lower 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 to AVDD • SPI-compatible serial interface • Extended temperature range: –40°C to +125°C • Tiny footprint: 3-mm × 3-mm WQFN 2 Applications • Communication systems • Optical networking • Medical instrumentation • Battery-powered equipment • Data acquisition systems 3 Description The ADS7947, ADS7948, and ADS7949 are pincompatible 12-bit, 10-bit, and 8-bit, 2-MSPS, analogto-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 lowpower 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...


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