The ADS8372 is billed as the industry’s most linear 16bit successive-approximation ADC.
Texas Instruments reckons it has developed the industry’s most linear 16bit successive-approximation (SAR) analogue-to-digital convertor (ADC). The ADS8372 features 16bit no missing code performance, 600Ksample/s datarate, less than 0.75LSB (maximum) integral nonlinearity (INL) and less than 0.5 LSB (maximum) differential nonlinearity (DNL) over the entire industrial temperature range (-40 to +85C). The device is ideal for advanced, real-time applications in automated test equipment, medical imaging, optical networking, high-speed control loops and high-resolution data acquisition systems.

The ADS8372 also provides a complete solution with an on-chip reference and reference buffer, allowing breakthrough signal linearity without requiring active external components.

‘By ensuring linearity performance below 1LSB, the ADS8372 is the most accurate 16bit SAR ADC in the industry’, said Tony Chang, Strategic Marketing Engineer for TI’s precision data convertor products.

‘The ADS8372 also enables significant board space savings by integrating an internal reference and reference buffer and packaging it in a tiny 6 x 6mm QFN’.

The ADS8372 features a fully differential, pseudo-bipolar input range and includes a 16bit capacitor-based SAR ADC architecture with inherent sample and hold, 4.096V internal reference, internal reference buffer and conversion clock.

The device offers a high-speed CMOS, SPI-compatible serial interface with clock speeds up to 40MHz.

A pseudo-differential, unipolar version, the ADS8370, is also available.

Other key specifications include +/-0.2 ppm/C offset drift, 94dB signal-to-noise ratio (SNR), 120dB spurious-free dynamic range (SFDR) and 110mW power consumption at 600Ksample/s (only 15mW during nap mode and 10uW during power down).

The ADS8372 is optimised to work with TI’s high-performance TMS320 DSP platforms.

TI also has a range of high-speed amplifiers, such as the THS4031 and THS4131, which are well suited to drive the analogue inputs of the ADS8372.

The ADS8372 is a RoHS-compatible ‘green’ device in a 6 x 6mm QFN-28 package, and is available now from TI and its authorised distributors.

The ADS8372 is priced starting at $13.00 in 1000-piece quantities (suggested resale pricing).

Evaluation modules are available.