ADA4571
RECOMMENDED FOR NEW DESIGNSIntegrated AMR Angle Sensor and Signal Conditioner
- Part Models
- 5
- 1ku List Price
- Starting From $0.80
Overview
- High precision 180° angle sensor
- Maximum angular error of 0.5°
- Analog sine and cosine outputs
- Ratiometric output voltages
- Low thermal and lifetime drift
- SAR or Σ-∆ analog-to-digital converter (ADC) drive capable
- Magnetoresistive (MR) bridge temperature compensation mode
- Temperature range: −40°C to +150°C
- EMI resistant
- Fault diagnostics
- VDD from 2.7 V to 5.5 V
- Minimum phase delay
- Qualified for automotive applications
- Available in an 8-lead SOIC package
The ADA4571 is an anisotropic magnetoresistive (AMR) sensor with integrated signal conditioning amplifiers and ADC drivers. The ADA4571 produces two analog outputs that indicate the angular position of the surrounding magnetic field.
The ADA4571 consists of two die within one package, an AMR sensor, and a fixed gain (G = 40 nominally) instrumentation amplifier. The ADA4571 delivers clean and amplified cosine and sine output signals related to the angle of a rotating magnetic field. The output voltage range is ratiometric to the supply voltage.
The sensor contains two Wheatstone bridges, at a relative angle of 45° to one another. A rotating magnetic field in the x-y sensor plane delivers two sinusoidal output signals with the double frequency of the angle (α) between sensor and magnetic field direction. Within a homogeneous field in the x-y plane, the output signals are independent of the physical placement in the z direction (air gap).
The ADA4571 is available in an 8-lead SOIC package.
Product Highlights
- Contactless angular measurement.
- Measures magnetic field direction rather than field intensity.
- Minimum sensitivity to air gap variations.
- Large working distance.
- Excellent accuracy, even for weak saturation fields.
- Minimal thermal and lifetime drift.
- Negligible hysteresis.
- Single chip solution.
Applications
- Absolute position measurement (linear and angle)
- Brushless dc motor control and positioning
- Actuator control and positioning
- Contactless angular measurement and detection
- Magnetic angular position sensing
Documentation
Data Sheet 2
User Guide 1
Application Note 3
Technical Articles 3
Video 4
Circuit Note 1
Webcast 7
3rd Party Solutions 1
Solutions Bulletin & Brochure 3
Thought Leadership 1
Rarely Asked Question 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 |
|---|---|---|---|
| ADA4571BRZ | 8-Lead SOIC | ||
| ADA4571BRZ-R7 | 8-Lead SOIC | ||
| ADA4571BRZ-RL | 8-Lead SOIC | ||
| ADA4571WHRZ-1-R7 | 8-Lead SOIC | ||
| ADA4571WHRZ-R7 | 8-Lead SOIC |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 1, 2019 - 18_0212 Addition of Alternate Wafer Fab (ADI Limerick) for ADA4571 Sensor Die |
||
| ADA4571BRZ | PRODUCTION | |
| ADA4571BRZ-R7 | PRODUCTION | |
| ADA4571BRZ-RL | PRODUCTION | |
|
Jun 8, 2026 - 26_0031 Discontinuance Notification for ADA4571W |
||
| ADA4571WHRZ-R7 | ||
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Virtual Eval - BETA
Virtual Eval is a web application to assist designers in product evaluation of ADCs, DACs, and other ADI products. Using detailed models on Analog’s servers, Virtual Eval simulates crucial part performance characteristics within seconds. Configure operating conditions such as input tones and external jitter, as well as device features like gain or digital down-conversion. Performance characteristics include noise, distortion, and resolution, FFTs, timing diagrams, response plots, and more.
Open ToolLTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
ADA4571 Evaluation Board
Resources
Evaluating the ADA4571W-1, Integrated AMR Angle Sensor and Signal Conditioner
Resources
Reference Designs
Magnetoresistive Angle and Linear Position Measurements
Part Used
Design & Integration Tools
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