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The AD620 is a low-cost, high-accuracy instrumentation amplifier that requires only one external resistor to set the gain over a gain range of 1 to 10,000. In addition, the AD620 is available in 8-pin SOIC and DIP packages, which are smaller than discrete circuit designs and consume less power (only 1.3 mA maximum supply current), making it ideal for battery-powered and portable (or remote) applications.

With high accuracy (40 ppm maximum nonlinearity), low offset voltage (50 μV maximum), and low offset drift (0.6 μV/°C maximum), the AD620 is ideal for precision data acquisition systems such as weigh scales and sensor interfaces . It also features low noise, low input bias current, and low power consumption, making it ideal for medical applications such as ECGs and non-invasive blood pressure monitors.

Low input bias currents of up to 1.0 nA can be achieved thanks to its Super?eta processing of the input stage. The AD620 has low input voltage noise of 9 nV/µHz at 1 kHz, 0.28 µV pp noise in the 0.1 Hz to 10 Hz band, and 0.1 pA/µHz input current noise, making it useful as a preamplifier it is good. At the same time, the AD620 has a 0.01% settling time of 15 μs, making it ideal for multiplexing applications, and low cost enough to implement an in-amp per channel design.

easy to use

Gain set by an external resistor

(Gain range: 1 to 10000)

Wide supply voltage range (±2.3 V to ±18 V)

Offers higher performance than triple op amp IA designs

Available in 8-pin DIP and SOIC packages

Low power consumption with a maximum supply current of 1.3 mA

low noise

Input Voltage Noise: 9 nV/√Hz (1 kHz)

0.28 μV pp noise (0.1 Hz to 10 Hz)

Excellent DC performance (Class B)

Input offset voltage: 50 μV (max)

Input Offset Drift: 0.6 μV/°C (max)

Input Bias Current: 1.0 nA (max)

Common Mode Rejection Ratio: 100 dB (min, G = 10)

Excellent AC Characteristics

Bandwidth: 120 kHz (G = 100)

0.01% Settling Time: 15 μs