
Diodes Incorporated.
Description
The AH8502 is a 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.
The AH8502 has a typical sensitivity of 2.1mV/G and 3.55mV/G at 1.8V and 3V. The typical null voltage offset is less than 1% of VDD. The device has typical input referred rms noise of 0.36G and 0.24G at 1.8V and 3.0V.
FEATUREs
• Linear Hall Effect Sensor with +/-430G Sense Range and Output
Voltage with 8-bit Resolution
• Supply Voltage of 1.6V to 3.6V
• Sensitivity: 2.1mV/G and 3.55mV/G at 1.8V and 3V at +25°C
• Low Offset Voltage
• Micropower (Default Mode), Turbo and External-Drive Modes
• Ultra Low Average Supply Current
◾ 13µA Typical in Micropower Mode (Default) Period at 1.8V
◾ 1.01mA Typical in Turbo Mode at 1.8V
◾ 1.16mA 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 Package
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
APPLICATIONs
• 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 Control – Gaming and Industrial Applications
• Smart Meters
• Contact-Less Level, Proximity and Position Measurement in
Home Appliances and Industrial Applications