ADAF1080 Series

Integrated 8 mT AMR Magnetic Field Sensor and Signal Conditioner

Catalog

Integrated 8 mT AMR Magnetic Field Sensor and Signal Conditioner

Part	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Bandwidth	Technology	Mounting Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Features	Axis	Current - Supply (Max) [Max]	Output Type	Supplier Device Package	Sensing Range
Analog Devices ADAF1080BCPZ-R7	125 °C	-40 °C	20-VFQFN Exposed Pad CSP	2.2 MHz	Hall Effect	Surface Mount	4.5 V	5.5 V	Temperature Compensated	Single	9 mA	Wheatstone Bridge	20-LFCSP (4x4)	8 mT
Analog Devices ADAF1080BCPZ	125 °C	-40 °C	20-VFQFN Exposed Pad CSP	2.2 MHz	Hall Effect	Surface Mount	4.5 V	5.5 V	Temperature Compensated	Single	9 mA	Wheatstone Bridge	20-LFCSP (4x4)	8 mT

Catalog

Integrated 8 mT AMR Magnetic Field Sensor and Signal Conditioner

Key Features

• Single-axis, high-precision, AMR magnetic field sensorMaximum magnetic field strength on the sense field axis for linear operation up to ±8 mTOutput noise (noise density magnetic field equivalent): 6 nT/√Hz>100 dB dynamic rangeFlip coil to calibrate electrical offset over life and temperatureTemperature compensated output

• 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 amplifierUp to 2.2 MHz bandwidth at gain = 20Programmable chopping for precision measurementsSynchronization features for wide bandwidth applicationsRatiometric output capability to improve PSRRProgrammable gain for 1.8 V to 5 V ADC rangeAnalog output optimized to drive ADC

• 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 featuresWide and user-selectable output common-mode voltageIntegrated electrical offset cancellationIntegrated diagnostics

• 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

Description

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.APPLICATIONSIsolated and contactless current sensingHandheld current clamp metersMotor control current senseAC and DC power applicationsPrecision magnetic field sensing applicationsPrecision linear encodersLow-noise, precision magnetometers