AH8503

Description

The AH8503 is a high accuracy, micropower linear Hall-effect sensor with an 8-bit output resolution. The output voltage is ratiometric to the supply voltage and proportional to the magnetic flux density perpendicular to the part marking surface. The output null voltage is at half the supply voltage.

AH8503 is a trimmed device with typical sensitivity of 2.25mV/G and 3.8mV/G at 1.8V and 3V respectively with an accuracy of 3% at +25°C. The device has a typical input referred rms noise of 0.36G and 0.24G at 1.8V and 3.0V.

Designed for battery powered consumer equipment to office equipment, home appliances and industrial applications, the AH8503 can operate over the supply range of 1.6V to 3.6V. The device has a CNTRL pin to select the operating modes and sampling rate to minimize power consumption. The device operates in default micropower mode with a sampling rate of 24Hz typical and consumes only 13µA typical at 1.8V. In turbo mode with a continuous 6.25kHz sample rate, the current consumption is 1mA typical. In external-drive mode, the CNTRL can be used to change the sampling frequency up to 7.14kHz with current consumption of 1.16mA typical at 1.8V.

To minimize PCB space the AH8503 is available in small low profile UDFN2020-6 (Type C) package.

Feature(s)

• High Accuracy Linear Hall-Effect Sensor with +/-400G Sense Range and Output Voltage with 8-Bit Resolution
• Supply Voltage of 1.6V to 3.6V
• High Accuracy: Trimmed Sensitivity of 2.225mV/G and 3.8mV/G at 1.8V and 3V Respectively with Accuracy of 3% at +25°C
• Low Offset Voltage
• Micropower (Default), Turbo and External-Drive Modes
• Ultra Low Average Supply Current
  • 13µA Typical in Micropower Mode (Default) Period at 1.8V
  • 01mA Typical in Turbo Mode at 1.8V
  • 16mA Typical in External-Drive Mode with 7.14kHz Sampling Rate at 1.8V
• Chopper Stabilized Design with Superior Temperature Stability, Minimal Sensitivity Drift, Enhanced Immunity to Physical Stress
• Output Voltage Maintained at ‘Sleep’ Mode
• -40°C to +85°C Operating Temperature
• High ESD Capability of 6kV Human Body Model
• Small Low Profile U-DFN2020-6 (Type C) Package
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
• For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Application(s)

• High accuracy level, proximity, position and travel detection
• Button press detection in digital still, video cameras and handheld gaming consoles
• Accurate door, lids and tray position detection
• Liquid level detection
• Joy stick controls – gaming and industrial applications
• Smart meters
• Contactless level, proximity and position measurement in home appliances and industrial applications