ADAF1080

RECOMMENDED FOR NEW DESIGNS

Integrated 8 mT AMR Magnetic Field Sensor and Signal Conditioner

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $3.60

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Overview

Single-axis, high-precision, AMR magnetic field sensor
- Maximum magnetic field strength on the sense field axis for linear operation up to ±8 mT
- Output noise (noise density magnetic field equivalent): 6 nT/√Hz
- >100 dB dynamic range
- Flip coil to calibrate electrical offset over life and temperature
- Temperature compensated output
Integrated precision instrumentation amplifier
- Up to 2.2 MHz bandwidth at gain = 20
- Programmable chopping for precision measurements
- Synchronization features for wide bandwidth applications
- Ratiometric output capability to improve PSRR
- Programmable gain for 1.8 V to 5 V ADC range
- Analog output optimized to drive ADC

Ease of use features
- Wide and user-selectable output common-mode voltage
- Integrated electrical offset cancellation
- Integrated diagnostics
Temperature range: –40°C to +125°C
Supply voltage range: 4.5 V to 5.5 V
Available in a 20-Lead LFCSP with an exposed pad

The ADAF1080 is a single-axis, high-precision, magnetic-field sensor with integrated signal conditioning. The device incorporates an anisotropic magnetoresistive (AMR) sensor with an integrated signal- conditioning amplifier, electrical-offset cancellation capabilities, integrated diagnostics, and an analog-to-digital converter (ADC) driver for precise measurement of magnetic fields up to ±8 mT.

The ADAF1080 consists of two die within one package, an AMR sensor, and an application-specific IC (ASIC). The ADAF1080 provides a precision amplified output signal that is proportional to the magnetic field strength along the sensitive axis of the sensor. The output voltage is ratiometric to the supply voltage with a common mode of half the voltage set on the external VSET input pin.

The magnetic orientation of the sensor can be defined through the use of an integrated flip coil that can be used for electrical-offset cancellation in the presence of a constant magnetic field. Diagnostics can be carried out through the use of an integrated diagnostic coil, which can measure the gain of the system or detect a magnetic saturation event.

The ADAF1080 is available in a 20-lead LFCSP with an exposed pad.

APPLICATIONS

Isolated and contactless current sensing
Handheld current clamp meters
Motor control current sense
AC and DC power applications
Precision magnetic field sensing applications
Precision linear encoders
Low-noise, precision magnetometers

Part Models: 2
1ku List Price: Starting From $3.60

Documentation

Data Sheet 1

ADAF1080: Integrated 8 mT AMR Magnetic Field Sensor and Signal Conditioner Data Sheet (Rev.0) 02/06/2023

User Guide 2

UG-2067: Evaluating the ADAF1080 Integrated ±8 mT AMR Magnetic Field Sensor and Signal Conditioner (Rev.0) 02/06/2023

UG-2068: Evaluating the ADAF1080 Integrated ±8 mT AMR Magnetic Field Sensor with a Ring Architecture (Rev.0) 02/06/2023

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
ADAF1080BCPZ	LFCSP:LEADFRM CHIP SCALE	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADAF1080BCPZ-R7	LFCSP:LEADFRM CHIP SCALE	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Evaluation Kits

Evaluating the ADAF1080 Integrated ±8 mT AMR Magnetic Field Sensor

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Features and Benefits

EVAL-ADAF1080SDZ

USB interface
Software control of the:
- Integrated amplifier gain
- Power-down functionality
- Synchronization with the ADC sampling
- Offset zeroing and sensor reset
Connector for external access
Measurement test points

EVAL-ADAF1080-3EBZ or EVAL-ADAF1080-6EBZ

Contactless current measurement
±200 A nominal range
Up to ±640 A extended range
Small form factor
Low noise
Zero-offset over life and temperature
Single analog output
Plug and play

Product Details

Analog Devices offers two board architectures for evaluation of the ADAF1080.

The EVAL-ADAF1080SDZ enables the user to simply and quickly achieve precise measurement of magnetic flux density using the high performance of the ADAF1080 and is compatible with the SDP-B controller board. The EVAL-ADAF1080SDZ features the ADAF1080 as a precision field sensor and a graphical user interface (GUI) is available to the user for quick evaluation.
The EVAL-ADAF1080-3EBZ or EVAL-ADAF1080-6EBZ includes an on-board low dropout (LDO) regulator, multiple ADAF1080 devices, and a summing amplifier to output a single analog voltage. Analog Devices, Inc., offer two versions of this evaluation board. The EVAL-ADAF1080-3EBZ has three sensors for a cost-effective, current-measurement solution, and the EVAL-ADAF1080-6EBZ has six sensors for cases where higher accuracy and resistance to interference is required.

The ADAF1080 is a single-axis, high-precision, low-field magnetic sensor with integrated signal conditioning. The device incorporates a low-field anisotropic magnetoresistive (AMR) sensor with an integrated signal conditioning amplifier, a flip coil with a driver and a calibration coil with a driver for measuring magnetic fields precisely. The ADAF1080 enables, low-noise, wide dynamic range measurement with zero electrical offset, wide bandwidth, and low harmonic distortions with integrated functions.