PRODUCT DESCRIPTION
The AD620 is a low cost, high accuracy instrumentation amplifier that requires only one external resistor to set gains of 1 to 10,000. Furthermore, the AD620 features 8-lead SOIC and DIP packaging that is smaller than discrete designs and offers lower power (only 1.3 mA max supply current), making it a good fit for battery-powered, portable (or remote) applications.
The AD620, with its high accuracy of 40 ppm maximum nonlinearity, low offset voltage of 50 μV max, and offset drift of 0.6 μV/°C max, is ideal for use in precision data acquisition systems, such as weigh scales and transducer interfaces. Furthermore, the low noise, low input bias current, and low power of the AD620 make it well suited for medical applications, such as ECG and noninvasive blood pressure monitors.

FEATURES
   Easy to use
      Gain set with one external resistor
         (Gain range 1 to 10,000)
      Wide power supply range (±2.3 V to ±18 V)
      Higher performance than 3 op amp IA designs
      Available in 8-lead DIP and SOIC packaging
      Low power, 1.3 mA max supply current
   Excellent dc performance (B grade)
      50 μV max, input offset voltage
      0.6 μV/°C max, input offset drift
      1.0 nA max, input bias current
      100 dB min common-mode rejection ratio (G = 10)
   Low noise
      9 nV/√Hz @ 1 kHz, input voltage noise
      0.28 μV p-p noise (0.1 Hz to 10 Hz)
   Excellent ac specifications
      120 kHz bandwidth (G = 100)
      15 μs settling time to 0.01%

APPLICATIONS
   Weigh scales
   ECG and medical instrumentation
   Transducer interface
   Data acquisition systems
   Industrial process controls
   Battery-powered and portable equipment