AH1803-WG-7

AH1803-WG-7 is a micropower, ultra-sensitive, hall effect switch. It has two Hall effect plates and a CMOS output driver. The device is primarily designed for battery-operated, handheld equipment (such as cellular and cordless phones, PDAs). The total operation power is down to 24µW in the 3V supply. Either the north or south pole turns the output on with sufficient strength. The output turns off under no magnetic field. While the magnetic flux density (B) is larger than operate point (Bop), the output turns on (low). The output is held until B is lower than the release point (Brp) then turns off (high). Applications include cellular phone, PDA, and cordless phone.

• 2.4 to 5.5V battery operation
• Chopper stabilized, superior temperature stability
• Extremely low switch-point drift, insensitive to physical stress
• Good RF noise immunity
• Operating temperature range from -40°C to +85°C
• ESD (HBM) > 4kV for DFN2020-6
• Supply current is 3mA typ at chip enable, TA = -40°C ~ +85°C, Vdd = 2.4V ~ 5.5V
• Duty cycle is 0.1% typical at TA = +25°C
• SC59 package