AD623
Single and Dual-Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier
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Alternative Parts
AD8226
Lower cost, 20% lower supply current, 2x faster, 3x the CMV rejection and wider supply range to 36V
Overview
Features and Benefits
- Easy to use
- Rail-to-rail output swing
- Input voltage range extends 150 mV below ground (single supply)
- Low power, 550 μA maximum quiescent current
- Gain set with one external resistor
- Gain range: 1 to 1000
- 14-terminal, 6 mm × 5.6 mm × 2.2 mm, LCC package
- High accuracy dc performance
- 0.10% gain error (G = 1)
- 0.35% gain error (G > 1)
- Noise: 35 nV/√Hz RTI noise at 1 kHz
- Optimal dynamic specifications
- 800 kHz bandwidth (G = 1)
- 20 μs settling time to 0.01% (G = 10)
Product Details
The AD623 is an integrated, single- or dual-supply instrumentation amplifier that delivers rail-to-rail output swing using supply voltages from 2.7 V to 12 V. The AD623 offers user flexibility by allowing single gain set resistor programming and by conforming to the 8-lead industry standard pinout configuration. With no external resistor, the AD623 is configured for unity gain (G = 1), and with an external resistor, the AD623 can be programmed for gains of up to 1000.
The accuracy of the AD623 is the result of increasing ac common-mode rejection ratio (CMRR) coincident with increasing gain. Line noise harmonics are rejected due to constant CMRR up to 200 Hz. The AD623 has a wide input common-mode range and amplifies signals with common-mode voltages as low as 150 mV below ground. The AD623 maintains optimal performance with dual and single polarity power supplies.
Applications
- Low power medical instrumentation
- Transducer interfaces
- Thermocouple amplifiers
- Industrial process controls
- Difference amplifiers
- Low power data acquisition
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
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AN-1401: Instrumentation Amplifier Common-Mode Range: The Diamond Plot (Rev. 0)10/14/2016
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AN-282: Fundamentals of Sampled Data Systems2/14/2015
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AN-589: Ways to Optimize the Performance of a Difference Amplifier (Rev. B)2/14/2015
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AN-244: A User's Guide to I.C. Instrumentation Amplifiers11/23/2004
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AN-245: Instrumentation Amplifiers Solve Unusual Design Problems11/23/2004
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AN-671: Reducing RFI Rectification Errors in In-Amp Circuits (Rev. 0)11/23/2004
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Low Power, Low Cost, Wireless ECG Holter Monitor1/4/2015
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Auto-Zero Amplifiers3/1/2010
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High-performance Adder Uses Instrumentation Amplifiers9/3/2009
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Input Filter Prevents Instrumentation-amp RF-Rectification Errors11/13/2003
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Protecting Instrumentation Amplifiers4/1/2000
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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.
SABER Model
AD623 SABER Macro-Model
SPICE Model
CIR
AD623 SPICE Macro Model
4.42 K
Design Tool
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 |
|---|---|---|---|---|
| AD623ANZ | Material Declaration | Reliability Data | 8-Lead PDIP | |
| AD623ARMZ | Material Declaration | Reliability Data | 8-Lead MSOP | |
| AD623ARMZ-REEL | Material Declaration | Reliability Data | 8-Lead MSOP | |
| AD623ARMZ-REEL7 | Material Declaration | Reliability Data | 8-Lead MSOP | |
| AD623ARZ | Material Declaration | Reliability Data | 8-Lead SOIC | |
| AD623ARZ-R7 | Material Declaration | Reliability Data | 8-Lead SOIC | |
| AD623ARZ-RL | Material Declaration | Reliability Data | 8-Lead SOIC | |
| AD623BNZ | Material Declaration | Reliability Data | 8-Lead PDIP | |
| AD623BRZ | Material Declaration | Reliability Data | 8-Lead SOIC | |
| AD623BRZ-R7 | Material Declaration | Reliability Data | 8-Lead SOIC | |
| AD623BRZ-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.
Support & Discussions
AD623 Discussions
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
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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.