OVP and EMI Protected, Precision, Low Noise and Bias Current Quad Op Amp

The ADA4177-1 single-channel, ADA4177-2 dual-channel, and ADA4177-4 quad-channel amplifiers feature low offset voltage (2 μV typical) and drift (1 μV/°C maximum), low input bias current, low noise, and low current consumption (500 μA typical). Outputs are stable with capacitive loads of more than 1000 pF with no external compensation.

The inputs of the ADA4177-1 / ADA4177-2 / ADA4177-4 feature outstanding precision amplifier robustness, providing input protection against signal excursions 32 V beyond either supply, as well as 70 dB of rejection for electromagnetic interference (EMI) at 1000 MHz.

Applications for these amplifiers include sensor signal conditioning (such as thermocouples, resistor thermal detectors (RTDs), and strain gages), process control front-end amplifiers, and precision diode power measurement in optical and wireless transmission systems.

The ADA4177-1 / ADA4177-2 / ADA4177-4 operate over the −40°C to +125°C industrial temperature range. The ADA4177-1 / ADA4177-2 are available in an 8-lead SOIC package and an 8-lead MSOP package. The ADA4177-4 is available in a 14-lead TSSOP and a 14-lead SOIC package.

APPLICATIONS

* Wireless base station control circuits

* Optical network control circuits

* Instrumentation

* Sensors and controls

Thermocouples, RTDs, strain gages, shunt current measurements

* Low offset voltage: 60 μV maximum at 25°C (8-lead and 14-lead SOIC)

* Low offset voltage drift: 1 μV/°C maximum (8-lead and 14-lead SOIC)

* Low input bias current: 1 nA maximum at 25°C

* Low voltage noise density: 8 nV/√Hz typical at 1 kHz

* Large signal voltage gain (AVO): 100 dB minimum over full supply voltage and operating temperature

* Input overvoltage protection to 32 V above and below the supply voltage rail

* Integrated EMI filter

* 70 dB typical rejection at 1000 MHz

* 90 dB typical rejection at 2400 MHz

* Rail-to-rail output swing