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AD620
PRODUCTIONLow Drift, Low Power Instrumentation Amp with Set Gains of 1 to 10000
- Part Models
- 10
- 1ku List Price
- Starting From $5.23
Part Details
- 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%
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.
APPLICATIONS
- Weigh scales
- ECG and medical instrumentation
- Transducer interface
- Data acquisition systems
- Industrial process controls
- Battery-powered and portable equipment
Documentation
Data Sheet 2
User Guide 1
Application Note 6
Technical Articles 6
Video 1
Technical Book 1
Circuit Note 1
Analog Dialogue 1
Rarely Asked Question Page 1
Video Series 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD620ACHIPS | None Available | ||
| AD620ANZ | 8-Lead PDIP | ||
| AD620ARZ | 8-Lead SOIC | ||
| AD620ARZ-REEL | 8-Lead SOIC | ||
| AD620ARZ-REEL7 | 8-Lead SOIC | ||
| AD620BNZ | 8-Lead PDIP | ||
| AD620BRZ | 8-Lead SOIC | ||
| AD620BRZ-R7 | 8-Lead SOIC | ||
| AD620BRZ-RL | 8-Lead SOIC | ||
| AD620SQ/883B | 8-Lead CerDIP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jan 13, 2011 - 10_0209 AD620 and AD622 Die Revision |
||
| AD620ACHIPS | ||
| AD620ANZ | PRODUCTION | |
| AD620ARZ | PRODUCTION | |
| AD620ARZ-REEL | PRODUCTION | |
| AD620ARZ-REEL7 | PRODUCTION | |
| AD620BNZ | PRODUCTION | |
| AD620BRZ | PRODUCTION | |
| AD620BRZ-R7 | PRODUCTION | |
| AD620BRZ-RL | PRODUCTION | |
| AD620SQ/883B | ||
|
Aug 19, 2009 - 07_0024 Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad |
||
| AD620ANZ | PRODUCTION | |
| AD620BNZ | PRODUCTION | |
|
Apr 9, 2018 - 16_0026 Qualify TeamQuest Technology, Inc. for Burn-in and Life Test of Military and Aerospace Devices |
||
| AD620SQ/883B | ||
|
Nov 7, 2012 - 12_0199 Qualification of New Conductive Silver-Filled Glass Die Attach Adhesive for Cerdip and Ceramic Flatpack (Cerpack) Packages. |
||
| AD620SQ/883B | ||
|
Jun 6, 2012 - 12_0066 Add capacity for Burn In of Hermetic, 883 & QMLQ/Class B devices at TSSI Cavite |
||
| AD620SQ/883B | ||
|
Nov 9, 2011 - 11_0050 Transfer of ADI Hermetics Assembly location from Paranaque, Manila to General Trias, Cavite Philippines |
||
| AD620SQ/883B | ||
|
Nov 9, 2011 - 11_0182 Test Site Transfer from Analog Devices Philippines Inc in Paranaque to Analog Devices General Trias in Cavite, Philippines |
||
| AD620SQ/883B | ||
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
-
Differential Voltage Measurement -
Low Power Strain Gauge Signal Measurement -
Precision Differential Voltage Measurement
| Parts | Product Life Cycle | Description |
|---|---|---|
| AD8422 | RECOMMENDED FOR NEW DESIGNS | High Performance, Low Power, Rail-to-Rail Precision Instrumentation Amplifier |
Tools & Simulations
In-Amp Diamond Plot Tool
The Diamond Plot Tool is a web application that generates a configuration-specific Output Voltage Range vs. Input Common-Mode Voltage graph, also known as the Diamond Plot, for Analog Devices Instrumentation Amplifiers. Based on user inputs such as supply voltage, gain, and input signal range, the tool detects saturation and recommends in-amps for which the input signal is in-range and the configuration is valid. Avoid saturation, find the best in-amp for your design, and save time.
Open ToolSABER Model 1
AD620 SPICE Macro Models 4
- AD620 SPICE Macro Model Rev. B, 10/95
- AD620A SPICE Macro Model Rev. B, 10/95
- AD620B SPICE Macro Model Rev. B, 10/95
- AD620S SPICE Macro Model Rev. B, 10/95
Signal Chain Designer - BETA
Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.
Open ToolIn-Amp Error Calculator
These tools will help estimate error contributions in your instrumentation amplifier circuit. It uses input parameters such as temperature, gain, voltage input, and source impedance to determine the errors that can contribute to your overall design.
Open ToolEvaluation Kits
AD62x, AD822x, AD842x Series InAmp Evaluation Board
Resources
Reference Designs
Low Cost Programmable Gain Instrumentation Amplifier Circuit Using the ADG1611 Quad SPST Switch and AD620 Instrumentation Amplifier