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AD622
PRODUCTIONLow Cost Instrumentation Amplifier
- Part Models
- 4
- 1ku List Price
- Starting From $3.62
Part Details
- 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
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
Documentation
Data Sheet 1
User Guide 1
Application Note 6
Technical Articles 4
Technical Book 1
Analog Dialogue 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 |
|---|---|---|---|
| AD622ANZ | 8-Lead PDIP | ||
| AD622ARZ | 8-Lead SOIC | ||
| AD622ARZ-R7 | 8-Lead SOIC | ||
| AD622ARZ-RL | 8-Lead SOIC |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
| No Match Found | ||
|
Jan 13, 2011 - 10_0209 AD620 and AD622 Die Revision |
||
| AD622ANZ | PRODUCTION | |
| AD622ARZ | PRODUCTION | |
| AD622ARZ-R7 | PRODUCTION | |
| AD622ARZ-RL | PRODUCTION | |
|
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 |
||
| AD622ANZ | PRODUCTION | |
|
Nov 23, 2010 - 10_0004 Halogen Free Material Change for SOIC Narrow Body Products Assembled at Amkor |
||
| AD622ARZ | PRODUCTION | |
| AD622ARZ-R7 | PRODUCTION | |
| AD622ARZ-RL | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
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 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 ToolSignal 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 ToolEvaluation Kits
AD62x, AD822x, AD842x Series InAmp Evaluation Board