Precision amp reduces complexity in industrial, instrumentation equipment

Precision amp reduces complexity in industrial, instrumentation equipment

Chip uses half the space of discrete solutions while providing a CMRR of 80 dB to 8 kHz

Integrating an instrumentation amplifier, two uncommitted operational amplifiers, and two precision-trimmed matched resistors in a single 4 x 4-mm chip-scale package, the AD8295 precision amplifier front-end uses 50% less board space than competing amplifier solutions for industrial and instrumentation applications. The company also claims that the amp delivers the highest CMRR over frequency in its class — maintaining a minimum of 80 dB to 8 kHz for all grades at G = 1, while competing devices typically fall off at 200 Hz.

The on-board instrumentation amp is gain programmable and uses a single resistor to set the gain from 1 to 1,000, delivering 1 ppm/°C maximum gain drift (B grade), 8 nV/√Hz maximum input voltage noise at 1 kHz, and 0.25-μVp-p input noise (0.1 Hz to 10 Hz). The AD8295 operates on both single and dual supplies and is well suited for applications where ±10-V input voltages are encountered. Housed in a 16-lead LFCSP, the chip uses only 2 mA of total current. ($2.89 ea/1,000 — available now.)

Analog Devices , Wilmington , MA
Information 800-262-5643
http://www.analog.com