Date: 19/10/2009

New simultaneous sampling ADCs from TI for power protection and motor control apps

TI has introduced the ADS8556, ADS8557 and ADS8558, a new 16, 14 and 12-bit simultaneous sampling successive approximation register (SAR) ADCs with high-voltage inputs, and offers a sampling range of 730 kSPS and signal-to-noise ratio (SNR) up to 91.5 dB, and also offers a 16-bit no missing codes (NMC) performance. These ADCs are suitable for a wide range of inputs or sensor types in applications such as multi-axis motor control, simultaneous data acquisition, robotics, power quality management and power protection.

The key features of these ADCs are,

ADS8556 (16-bit) 91.5 SNR, 2x faster
ADS8557 (14-bit) 85 SNR, 2.5x faster
ADS8558 (12-bit) 73.9 SNR, ~3x faster
Bipolar inputs with software-selectable input ranges up to +/-12 V
Low power dissipation of 298.5 mW at maximum data rate, 150 mW at 250 kSPS
Better performance and external conversion for multiple device synchronization in flexible and expandable systems

Package: LQFP-64 package
Price:
ADS8556: Each $15.95 for 1k pieces
ADS8557: Each $10.95 for 1k pieces
ADS8558: Each $8.95 for 1k pieces

Availability: Now

For more details visit www.ti.com

Editorial Product Rating: Average