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AD620 Datasheet

AD620 Datasheet

Low Drift, Low Power Instrumentation Amp with Set Gains of 1 to 10000
Part No.: AD620
Page: 20 Pages
Size: KB
Manufacturer: Analog Devices, Inc.
Logo:
Views: 1
Update Time: 2023-12-20 14:22:55
DataSheet: No File

AD620 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
AD620AN       1 8 -40°C ~ 85°C 8-Lead PDIP  
AD620ANZ Tube 50   1 8 -40°C ~ 85°C 8-Lead PDIP  
AD620BN       1 8 -40°C ~ 85°C 8-Lead PDIP  
AD620BNZ Tube 50   1 8 -40°C ~ 85°C 8-Lead PDIP  
AD620AR       1 8 -40°C ~ 85°C 8-Lead SOIC_N  
AD620ARZ Tube 98   1 8 -40°C ~ 85°C 8-Lead SOIC_N  
AD620AR-REEL       1 8 -40°C ~ 85°C 8-Lead SOIC_N, 13" Tape and Reel  
AD620ARZ-REEL Reel 2500   1 8 -40°C ~ 85°C 8-Lead SOIC_N, 13" Tape and Reel  
AD620AR-REEL7 Reel 750   1 8 -40°C ~ 85°C 8-Lead SOIC_N, 7" Tape and Ree  
AD620ARZ-REEL7       1 8 -40°C ~ 85°C 8-Lead SOIC_N, 7" Tape and Ree  
AD620BR       1 8 -40°C ~ 85°C 8-Lead SOIC_N  
AD620BRZ Tube 98   1 8 -40°C ~ 85°C 8-Lead SOIC_N  
AD620BR-REEL       1 8 -40°C ~ 85°C 8-Lead SOIC_N, 13" Tape and Reel  
AD620BRZ-RL Reel 2500   1 8 -40°C ~ 85°C 8-Lead SOIC_N, 13" Tape and Reel  
AD620BR-REEL7       1 8 -40°C ~ 85°C 8-Lead SOIC_N, 7" Tape and Ree  
AD620BRZ-R7 Reel 750   1 8 -40°C ~ 85°C 8-Lead SOIC_N, 7" Tape and Ree  
AD620ACHIPS WafflePack 140   1   -40°C ~ 85°C Die Form  
AD620SQ/883B Tube 48   1 8 -55°C ~ 125°C 8-Lead CERDIP  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

AD620 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 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%

AD620 Applications

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

AD620 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 Superϐeta processing in the input stage. The AD620 works well as a preamplifier due to its low input voltage noise of 9 nV/√Hz at 1 kHz, 0.28 μV p-p in the 0.1 Hz to 10 Hz band, and 0.1 pA/√Hz 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.

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