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AD621
PRODUCTIONLow Drift, Low Power Instrumentation Amp with fixed gains of 10 and 100
- Part Models
- 9
- 1ku List Price
- Starting From $7.08
Part Details
- Easy To Use
Pin-Strappable Gains of 10 and 100
All Errors Specified for Total System Performance
High Performance than Discrete In Amp Designs
Available in 8-Lead DIP and SOIC
Low Power, 1.3 mA Max Supply Current
Wide Power Supply - Low Noise
9 nV/vHz, @ 1 kHz, Input Voltage Noise
0.28 µV p-p Noise (0.1 Hz to 10 Hz) - Excellent DC Performance
0.15% Max, Total Gain Error
±5 ppm/°C, Total Gain Drift
125 µV Max, Total Offset Voltage
1.0 µV/°C Max, Offset Voltage Drift - Excellent AC Specifications
800 kHz Bandwidth (G = 10),
200 kHz (G = 100)
12 µs Settling Time to 0.01%
The AD621 is an easy to use, low cost, low power, high accuracy instrumentation amplifier which is ideally suited for a wide range of applications. Its unique combination of high performance, small size and low power, outperforms discrete in amp implementations. High functionality, low gain errors and low gain drift errors are achieved by the use of internal gain setting resistors. Fixed gains of 10 and 100 can be easily set via external pin strapping. The AD621 is fully specified as a total system, therefore, simplifying the design process.
For portable or remote applications, where power dissipation, size and weight are critical, the AD621 features a very low supply current of 1.3 mA max and is packaged in a compact 8-pin SOIC, 8-pin plastic DIP or 8-pin cerdip. The AD621 also excels in applications requiring high total accuracy, such as precision data acquisition systems used in weigh scales and transducer interface circuits. Low maximum error specifications including nonlinearity of 10 ppm, gain drift of 5 ppm°/C, 50 µV offset voltage and 0.6 mV/°C offset drift ("B" grade), make possible total system performance at a lower cost than has been previously achieved with discrete designs or with other monolithic instrumentation amplifiers.
When operating from high source impedances, as in ECG and blood pressure monitors, the AD621 features the ideal combination of low noise and low input bias currents. Voltage noise is specified as 9 nV/(root) Hz at 1 kHz and 0.28 µV p-p from 0.1 Hz to 10 Hz. Input current noise is also extremely low at 0.1 pA/
Documentation
Data Sheet 1
User Guide 1
Application Note 7
Technical Articles 4
Technical Book 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 |
|---|---|---|---|
| AD621ANZ | 8-Lead PDIP | ||
| AD621ARZ | 8-Lead SOIC | ||
| AD621ARZ-R7 | 8-Lead SOIC | ||
| AD621ARZ-RL | 8-Lead SOIC | ||
| AD621BNZ | 8-Lead PDIP | ||
| AD621BRZ | 8-Lead SOIC | ||
| AD621BRZ-R7 | 8-Lead SOIC | ||
| AD621BRZ-RL | 8-Lead SOIC | ||
| AD621SQ/883B | 8-Lead CerDIP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
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 |
||
| AD621ANZ | PRODUCTION | |
| AD621BNZ | PRODUCTION | |
|
Nov 23, 2010 - 10_0004 Halogen Free Material Change for SOIC Narrow Body Products Assembled at Amkor |
||
| AD621ARZ | PRODUCTION | |
| AD621ARZ-R7 | PRODUCTION | |
| AD621ARZ-RL | PRODUCTION | |
| AD621BRZ | PRODUCTION | |
| AD621BRZ-R7 | PRODUCTION | |
| AD621BRZ-RL | PRODUCTION | |
|
Apr 9, 2018 - 16_0026 Qualify TeamQuest Technology, Inc. for Burn-in and Life Test of Military and Aerospace Devices |
||
| AD621SQ/883B | ||
|
Nov 7, 2012 - 12_0199 Qualification of New Conductive Silver-Filled Glass Die Attach Adhesive for Cerdip and Ceramic Flatpack (Cerpack) Packages. |
||
| AD621SQ/883B | ||
|
Jun 6, 2012 - 12_0066 Add capacity for Burn In of Hermetic, 883 & QMLQ/Class B devices at TSSI Cavite |
||
| AD621SQ/883B | ||
|
Nov 9, 2011 - 11_0050 Transfer of ADI Hermetics Assembly location from Paranaque, Manila to General Trias, Cavite Philippines |
||
| AD621SQ/883B | ||
|
Nov 9, 2011 - 11_0182 Test Site Transfer from Analog Devices Philippines Inc in Paranaque to Analog Devices General Trias in Cavite, Philippines |
||
| AD621SQ/883B | ||
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