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AD620:  Low Drift, Low Power Instrumentation Amp with Set Gains of 1 to 10000

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 ...More

AD620:  Low Drift, Low Power Instrumentation Amp with Set Gains of 1 to 10000

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.

The low input bias current of 1.0 nA max is made possible with the use of Superßeta processing in the input stage. The AD620 works well as a preamplifier due to its low input voltage noise of 9 nV/ÖHz at 1 kHz, 0.28 µV p-p in the 0.1 Hz to 10 Hz band, 0.1 pA/ÖHz input current noise. Also, the AD620 is well suited for multiplexed applications with its settling time of 15 µs to 0.01% and its cost is low enough to enable designs with one in amp per channel.

RESOURCES & TOOLS

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  • 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 Three
    Op Amp IA Designs
    Available in 8-Lead DIP and SOIC Packaging
    Low Power, 1.3 mA max Supply
  • LOW NOISE
    9 nV/√Hz, @ 1 kHz, Input Voltage Noise
    0.28 µV p-p Noise (0.1 Hz to 10 Hz)
  • 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)
  • EXCELLENT AC SPECIFICATIONS
    120 kHz Bandwidth (G = 100)
    15 µs Settling Time to 0.01%

Pin Configuration Diagram for AD620

Pricing, Packaging & Availability

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*The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.