Analog Devices’ AD8429 instrumentation amp is claimed to be one of the fastest in amps on the market with a current feedback architecture that offers 15-MHz (G=1) bandwidth and a 22-V/μs slew rate, which is 30 percent higher than competing instrumentation amps, according to the company.
With 1-nV/√Hz input noise and 45-nV/√Hz output noise, the AD8429 operates across the extended industrial temperature range of -40˚C to 125˚C. Input bias current of 50-nA is “orders of magnitude lower than the 12,000-nA bias current of other instrumentation amps,” reports ADI, while the 100-μV input offset voltage of the AD8429 is “two to three times lower”.
Designed for precise measurement of extremely small signals present in noisy industrial operating environments applications include healthcare instrumentation, precision data acquisition equipment and industrial vibration analysis.
The AD8429 provides features a ±4-V to ±18-V dual power supply. Gain is set from 1 to 10,000 with a single resistor, and a reference pin allows the user to offset the output voltage.
Available in a 4-mm x 5-mm, JEDEC compliant, plastic SOIC_N (small outline package, narrow body) package the amp is priced at $3.50 each in lots of 1,000.