Diodes Inc AH850x Hall Effect Sensors

The AH8500 is a low power/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. AH8500 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 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 AH8500 can operate over the supply range of 1.6V to 3.6V and uses an externally controlled ENABLE pin clocking system to control operating modes and sampling rates and to minimize the power consumption. The typical average operating supply current is between 8.9µA during “Sleep” mode and 1.16mA at maximum sampling rate 1.8V. With a conversion pulse every 50ms at the ENABLE pin, the device achieves a micropower operation with the power consumption of 22µW typical at 1.8V supply. To minimize PCB space the AH8500 is available in small low profile U-DFN2020-6.  

Features

• 400-430G sense range and output voltage with 8-bit resolution
• Supply voltage: 1.6V-3.6V
• Low offset voltage
• Low average supply current
• 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
• Small low profile U-DFN2020-6 package
• RoHS Compliant
• Halogen and antimony free

Datasheet