Alternative Parts
AD8479
2x wider Common-mode range, higher input impedance, lower voltage drift and gain error, with R-R Output
Overview
Features and Benefits
- Improved replacement for: INA117P and INA117KU
- ±270 V common-mode voltage range
- Input protection to
±500 V common mode
±500 V differential mode
Wide power supply range (±2.5 V to ±18 V)
±10 V output swing on ±12 V supply
1 mA maximum power supply current - HIGH ACCURACY DC PERFORMANCE
3 ppm maximum gain nonlinearity (AD629B)
20 μV/°C maximum offset drift (AD629A)
10 μV/°C maximum offset drift (AD629B)
10 ppm/°C maximum gain drift - EXCELLENT AC SPECIFICATIONS
77 dB minimum CMRR @ 500 Hz (AD629A)
86 dB minimum CMRR @ 500 Hz (AD629B)
500 kHz bandwidth
Product Details
The AD629 is a difference amplifier with a very high input, common-mode voltage range. It is a precision device that allows the user to accurately measure differential signals in the presence of high common-mode voltages up to ±270 V.
The AD629 can replace costly isolation amplifiers in applications that do not require galvanic isolation. The device operates over a ±270 V common-mode voltage range and has inputs that are protected from common-mode or differential mode transients up to ±500 V.
The AD629 has low offset, low offset drift, low gain error drift, low common-mode rejection drift, and excellent CMRR over a wide frequency range.
The AD629 is available in low cost, 8-lead PDIP and 8-lead SOIC packages. For all packages (including die) and grades, performance is guaranteed over the industrial temperature range of −40°C to +85°C.
Applications
- High voltage current sensing
- Battery cell voltage monitors
- Power supply current monitors
- Motor controls
- Isolation
Product Categories
Markets and Technologies
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.
Documentation & Resources
-
AN-1531: Measuring −48 V High-Side Current Using the AD629 Difference Amplifier, AD8603 Op Amp, AD780 Reference, and AD7453 12-Bit ADC Single-Supply Components (Rev. a)12/18/2017
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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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Simple Discrete SE-to-Differential Precision In-Amp Circuit: High Common-Mode Input Range and 50% Less Power10/1/2016
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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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High-Voltage Monitor Features High Accuracy8/19/2002
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The AD8221 - Setting a New Industry Standard for Instrumentation Amplifiers1/1/2000
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Finding the Needle in a Haystack: Measuring small differential voltages in the presence of large common-mode voltages1/1/2000 Analog Dialogue
Tools & Simulations
SPICE Models
Reference Designs (1)
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 |
|---|---|---|---|---|
| AD629AC-WP | Material Declaration | Reliability Data | None Available | |
| AD629ANZ | Material Declaration | Reliability Data | 8-Lead PDIP | |
| AD629ARZ | Material Declaration | Reliability Data | 8-Lead SOIC | |
| AD629ARZ-R7 | Material Declaration | Reliability Data | 8-Lead SOIC | |
| AD629ARZ-RL | Material Declaration | Reliability Data | 8-Lead SOIC | |
| AD629BNZ | Material Declaration | Reliability Data | 8-Lead PDIP | |
| AD629BRZ | Material Declaration | Reliability Data | 8-Lead SOIC | |
| AD629BRZ-R7 | Material Declaration | Reliability Data | 8-Lead SOIC | |
| AD629BRZ-RL | Material Declaration | Reliability Data | 8-Lead SOIC | |
| Wafer Fabrication Data |
PCN-PDN Information
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Support & Discussions
AD629 Discussions
Sample & Buy
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Buy Now Pricing
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List Pricing
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Lead Times
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