ADAF1080

RECOMMENDED FOR NEW DESIGNS

Integrated 8 mT AMR Magnetic Field Sensor and Signal Conditioner

Analog Devices ADAF1080 Product Info

10 February 2026 5

Features

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

Part details & applications

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

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