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Industry's Smallest 12-, 14- and 16-bit SAR ADCs

Published: Sep 17,2014

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Texas Instruments (TI) is enabling system designers to reduce the size of their industrial monitoring and control applications with its newest successive approximation register (SAR) analog-to-digital converters (ADCs).

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The ADS7042 is the industry's smallest and lowest-power 12-bit SAR ADC, and the ADS8354 family includes the industry's smallest 14- and 16-bit, simultaneous-sampling SAR ADCs.

The 1-MSPS ADS7042 pushes the boundaries of size and power. The tiny device uses only 690 uW of power at full speed and scales consumption down with sampling rate to unprecedented levels for use in ultra-low-power systems.

At 1 kSPS, for example, the ADS7042 consumes less than 1 uW of power, enabling its use in remote system monitoring and energy harvesting applications. It can also be used in motor control, metering, and portable medical equipment, as well as space-constrained consumer applications, such as hard disk drives, computer peripherals, wearable fitness and smart phones.

The 2-channel ADS8354 family includes the industry's smallest 14- and 16-bit simultaneous sampling SAR ADCs. With data rates ranging from 600 kSPS- to 2 MSPS-per-channel, no latency and dual, independently controllable internal voltage references, the family is optimized for the industrial market, most notably motor control, DC load control, optical networking, power quality, industrial automation and programmable logic controllers (PLCs).

Features:

- Saves board space: Measures only 3 mm by 3 mm with two independently programmable voltage references, which enables separate full-scale ranges per channel. This reduces the need for external signal conditioning circuitry and cuts overall board space to further shrink industrial designs.

- Large family provides design flexibility: 12-, 14- and 16-bit family includes 11 devices with data rates from 600 kSPS to 2 MSPS and with single-ended or differential inputs, which allows designers to more easily customize the analog signal chain to meet their industrial system needs.

- Flexible interface with fast response time: Enables fast, no latency motor control with a simple, configurable 18-MHz or 32-MHz clock.

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