Date: 15/07/2012

Chip with amplifier and driver to connect directly to ADC input

To save the designer from having a separate op-amp and ADC driver, Intersil has made available new 40V, low noise instrumentation amplifier with an integrated analog-to-digital converter (ADC) level shifter and driver. Though Analog ICs such as these are available but not for driving high performance differential input ADCs upto 24 bits.

Intersil boast that this IC offers excellent gain accuracy and gain temperature coefficient over a temperature range of -40°C to 125°C, with the industry’s highest common mode rejection ratio (CMRR) in all gain configurations. Other differentiating features include: noise measures only 8.6nV/vHz @ 1kHz and 85nVrms from 0.1Hz to 10Hz, and the ISL28617 can provide both high gain and attenuation. The ISL28617 is suggested for instrumentation, industrial, motor control and medical systems.

Other features and specifications: Both single and dual supply voltage operation, high gain (10,000x) and attenuation (0.1x) required in flexible data acquisition systems.

Intersil suggests using Vishay Precision Group’s next generation Z-1 Bulk Metal Foil technology FRSM chip resistors provides gain setting with non-measurable noise while maintaining exceptional gain accuracy under extraordinary thermal and environmental stresses.

Pricing and Availability: The ISL28617 is available now in a compact 24-lead TSSOP package with prices starting at $2.85 each in 1,000-unit quantities.

For more information visit: http://www.intersil.com/products/ISL28617