Overview
Features and Benefits
- Easy to use
- Low cost solution
- Higher performance than two or three op amp design
- Unity gain with no external resistor
- Optional gains with one external resistor
(Gain range: 2 to 1000) - Wide power supply range: ±2.6 V to ±15 V
- Available in 8-lead PDIP and 8-lead SOIC_N packages
- Low power, 1.5 mA maximum supply current
- DC performance
0.15% gain accuracy: G = 1
125 μV maximum input offset voltage
1.0 μV/°C maximum input offset drift
5 nA maximum input bias current
66 dB minimum common-mode rejection ratio: G = 1 - Noise
12 nV/√Hz @ 1 kHz input voltage noise
0.60 μV p-p noise: 0.1 Hz to 10 Hz, G = 10 - AC characteristics
800 kHz bandwidth: G = 10
10 μs settling time to 0.1% @ G = 1 to 100
1.2 V/μs slew rate
Product Details
The AD622 is a low cost, moderately accurate instrumentation amplifier in the traditional pin configuration that requires only one external resistor to set any gain between 2 and 1000. For a gain of 1, no external resistor is required. The AD622 is a complete difference or subtractor amplifier system that also provides superior linearity and common-mode rejection by incorporating precision laser-trimmed resistors.
The AD622 replaces low cost, discrete, two or three op amp instrumentation amplifier designs and offers good common-mode rejection, superior linearity, temperature stability, reliability, power, and board area consumption. The low cost of the AD622 eliminates the need to design discrete instrumentation amplifiers to meet stringent cost targets. While providing a lower cost solution, it also provides performance and space improvements.
Applications
- Transducer interface
- Low cost thermocouple amplifier
- Industrial process controls
- Difference amplifier
- Low cost data acquisition
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
-
AN-1401: Instrumentation Amplifier Common-Mode Range: The Diamond Plot (Rev. 0)10/14/2016
-
AN-282: Fundamentals of Sampled Data Systems2/14/2015
-
AN-589: Ways to Optimize the Performance of a Difference Amplifier (Rev. B)2/14/2015
-
AN-244: A User's Guide to I.C. Instrumentation Amplifiers11/23/2004
-
AN-245: Instrumentation Amplifiers Solve Unusual Design Problems11/23/2004
-
AN-671: Reducing RFI Rectification Errors in In-Amp Circuits (Rev. 0)11/23/2004
-
Auto-Zero Amplifiers3/1/2010
-
High-performance Adder Uses Instrumentation Amplifiers9/3/2009
-
Ask The Applications Engineer—38: Better, Faster Open-Loop Gain Measurement11/1/2007 Analog Dialogue
-
Input Filter Prevents Instrumentation-amp RF-Rectification Errors11/13/2003
-
The AD8221 - Setting a New Industry Standard for Instrumentation Amplifiers1/1/2000
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.
Design Tools
In-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.
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| AD622ANZ | Material Declaration | Reliability Data | 8-Lead PDIP | |
| AD622ARZ | Material Declaration | Reliability Data | 8-Lead SOIC | |
| AD622ARZ-R7 | Material Declaration | Reliability Data | 8-Lead SOIC | |
| AD622ARZ-RL | Material Declaration | Reliability Data | 8-Lead SOIC | |
| Wafer Fabrication Data |
PCN-PDN Information
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.