SAR analog-to-digital converter offers 3.5 dB-better SNR and more than twice the sampling rate of competitive devices
Key features and benefits
-- SNR of 91.5 db (typical) is up to 3.5 db better than the competition, for higher resolution of dynamic range signals; sampling rate of 730 kSPS per channel is more than twice that of the closest competitor -- ADS8556 (16-bit) 91.5 SNR; 2x faster -- ADS8557 (14-bit) 85 SNR; 2.5x faster -- ADS8558 (12-bit) 73.9 SNR; ~3x faster -- True bipolar inputs with software-selectable input ranges up to +/-12 V allow easy connectivity to a wide range of inputs and sensors -- Low power dissipation of 298.5 mW at maximum data rate; 150 mW at 250 kSPS -- Excellent performance and external conversion for multiple device synchronization, resulting in flexible and expandable systems -- The device's performance is maximized when used with TI's low-noise operational amplifiers: the low-noise, high-precision OPA827 featuring a FET input for high-impedance output sources; and the OPA211, TI's low-power, lowest noise +/-18-V op amp. These ADCs work well with many microcontrollers and embedded controllers, including TI's TMS320F2812.
Availability and pricing
The ADS8556 is available today in an LQFP-64 package and is pin-compatible with the 14-bit ADS8557 and the 12-bit ADS8558. Pricing in 1,000-unit quantities is $15.95 (ADS8556), $10.95 (ADS8557) and $8.95 (ADS8558).
Find out more about TI's high-performance ADCs by visiting the links below:
-- Order ADS855x samples at www.ti.com/ads8556-pr -- Quickly search TI's entire data converter portfolio or download the latest selection guide: www.ti.com/dataconverters-pr -- View TI Senior Application Engineer Bonnie Baker's video "Analog Tutorial - The Basics of Effective Number of Bits" at www.ti.com/bitselection-pr -- Ask questions and share knowledge on TI's E2E online community: http://www.ti.com/e2e-pr
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