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Technical content
Unipolar Hall-Effect Digital Switch Packages Features and Benefits – 4.5V to 6V Operation – Miniature construction – Low-Noise Output – Magnetically Optimized Package – Linear output for circuit design flexibility – Temperature range of -40 °C to 150 °C 3 pin SIP (suffix UA) Functional Block Diagram Application Examples – Motor control – Magnetic code reading – Ferrous metal detector – Current sensing – Position sensing General Description SS657 Linear Hall-effect sensor is small, versatile linear Hall-effect device that is operated by the magnetic field from a permanent magnet or an electromagnet. The linear sourcing output voltage is set by the supply voltage and varies in proportion to the strength of the magnetic field. The integrated circuitry features low noise output, which makes it unnecessary to use external filtering. It also includ es thin film resistors to provide increased temperature stability and accuracy. The linear Hall sensor has an operating temperature range of -40 °C to 150 °C appropriate for commercial, consumer and industrial environments.
2 GND
3 Vout
1 Vcc
MilliTesla (mT), Gauss Units of magnetic flux density: 1mT = 10 Gauss RoHS Restriction of Hazardous Substances Operating Point (BOP) Magnetic flux density applied on the branded side of the package which turns the output driver ON (VOUT = VDSon) Release Point (BRP) Magnetic flux density applied on the branded side of the package which turns the output driver OFF (VOUT = high) 1 V2.10 May 1, 2012
Unipolar Hall-Effect Digital Switch Pin Definitions and Descriptions SOT Pin № Name Status Description
1 VDD P Power Supply
2 OUT P IC Ground
3 GND O Output
Table 1: Pin definitions and descriptions Absolute Maximum Ratings Parameter Symbol Value Units Supply Voltage( operating) V CC 8.0 V Output Current IOUT 20 mA Operating Temperature Range TA -40 to 85 °C Storage Temperature Range TS -65 to 150 °C Table 2: Absolute maximum ratings
Electrical Characteristics
DC Operating Parameters TA = 25℃, VCC= 5.0V Parameter Symbol Test Conditions Min Typ Max Units Operating Voltage VCC Operating 3.0 6.5 V Supply Current ICC Average 4.2 8.0 mA Output Current IOUT 1.0 1.5 mA Response Time Tack 3 µs Quiescent Output Voltage VO B = 0G 2.25 2.5 2.75 V Sensitivity △VOUT T A =25°C 1.6 1.8 2.0 mV/G Min Output Voltage B = -1500G 0.86 V Max Output Voltage B = 1500G 4.21 V Table 3: Electrical Characteristics 2 V2.10 May 1, 2012
Unipolar Hall-Effect Digital Switch Performance Characteristics 3 V2.10 May 1, 2012
Unipolar Hall-Effect Digital Switch Package UA, 3-Pin SIP:
Ordering Information
Part No. Pb-free Temperature Code Package Code Packing SS657EUA YES E (-40°C to 85°C) UA(TO-92) Bulk, 1000 pieces/bag SS657KUA YES E (-40°C to 125°C) UA(TO-92) Bulk, 1000 pieces/bag SS657LUA YES E (-40°C to150°C) UA(TO-92) Bulk, 1000 pieces/bag 4 V2.10 May 1, 2012