LINEAR HALL-EFFECT SENSORS
The TL173L and TL173C are low-cost magnetic field sensors designed to provide a linear output voltage proportional to the magnetic field they sense. These monolothic circuits incorporate a Hall element as the primary sensor along with a voltage reference and a precision amplifier. Temperature stabilization and internal trimming circuitry yield a device that features high overall sensitivity accuracy with less then 5% error over its operating temperature range.
The TL173L is characterized for operation from -20°C to 85°C. The TL173C is characterized for operation from 0°C to 70°C.Functional Block Diagram
|Supply voltage, Vcc (see Note 1)||25V|
|Continuous total dissipation at (or below) 25°C free-air temperature (see Note 2)||775 mW|
|Operating free-air temperature range:||TL173L||-20°C to 85°C|
|TL173C||0°C to 70°C|
|Storage temperature range||-65°C to 150°C|
|Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds||260°C|
|Magnetic Flux Density||unlimited|
1. Voltage values are with respect to network ground terminal.
2. For operation above 25°C free-air temperature, aerate linearly at the rate of 6.2 mW/°C
|Supply Voltage, Vcc||10.8||12||13.2||10.8||12||13.2||V|
|Magnetic flux density, B||-||-||+/- 50||-||-||+/- 50||mT|
|Output Current, Io||Sink||-||-||0.5||-||-||0.5||mA|
|Operating free-air temperature, TA||-20||-||85||0||-||70||°C|
The circuits in Figure 3 may be used to set the output voltage at zero field strenght to exactly 6V (using R1), and to set the sensitivity to exactly -15 V/T (using R2), as depicted in Figure 4.