ADAF1080
Info : RECOMMENDED FOR NEW DESIGNS
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ADAF1080

Integrated 8 mT AMR Magnetic Field Sensor and Signal Conditioner

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 2
1ku List Price Starting From $3.60
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
Additional Details
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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

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADAF1080BCPZ
  • HTML
  • HTML
ADAF1080BCPZ-R7
  • HTML
  • HTML
Evaluation Kit

Evaluation Kits 1

reference details image

EVAL-ADAF1080

Evaluating the ADAF1080 Integrated ±8 mT AMR Magnetic Field Sensor

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EVAL-ADAF1080

Evaluating the ADAF1080 Integrated ±8 mT AMR Magnetic Field Sensor

Evaluating the ADAF1080 Integrated ±8 mT AMR Magnetic Field Sensor

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 Detail

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.

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