TMR1155 MULTIDIMENSION | Alldatasheet
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Technical content
Datasheet V 1.1a TMR1155 TMR Z-Axis Unipolar Switch General Description TMR1155 is a digital unipolar magnetic switch that integrates TMR and CMOS technology in order to provide a magnetically triggered digital switch with high sensitivity, high speed, and ultra -low power consumption. It is designed for use in applications that are both power -critical and performance -demanding. It contains a push-pull full-bridge TMR magnetic sensor and CMOS signal processing circuitry within the same package, including an on-chip TMR voltage generator for precise magnetic sensing, a TMR voltage amplifier and comparator plus a Schmitt trigger to provide switching hysteresis for noise rejection, and CMOS push-pull output. An internal band gap regulator is used to provide a temperature compensated supply voltage for internal circuits, permitting a wide range of supply voltages up to 40V. The TMR1155 draws only 0.6mA resulting in low power operation. It has fast response, accurate switching points, excellent thermal stability, and immunity to stray field interference. It is available in the SOT23-3 package (P/N TMR1155S) or the TO-92S package (P/N TMR1155T). Features and Benefits Tunneling Magnetoresistance (TMR) Technology Low Power Consumption(<0.6mA) High Frequency Response(>1kHz) Unipolar Latching Operation Z-axis sensing direction compatible with Hall Effect Low Switching Points for High Sensitivity High Supply Voltage of 40V and 30V Reverse Voltage Open Drain Output Excellent Thermal Stability High Tolerance to External Magnetic Field Interference
Applications
Utility Meters including Water, Gas, and Heat Meters Solid State Switches Position and Speed Sensing Motor and Fan Control Power Window TMR1155S(Left), TMR1155T(Right)
Datasheet V 1.1a Block Diagram Pin Configuration Pin Name Pin No. Pin Function TO-92S SOT23-3 VCC 1 1 Supply Voltage GND 2 3 Ground VOUT 3 2 Output SOT23-3 TO-92S Absolute Maximum Ratings Parameter Symbol Limit Unit Supply Voltage VCC 40 V Reverse Supply Voltage VRCC 30 V Output Current IOUTSINK 25 mA Magnetic Flux Density B 4000 G ESD level(HBM) VESD 2 kV Operating Ambient Temperature TA -40 ~125 °C Storage Temperature Tstg -50 ~ 150 °C Electrical Characteristics (VCC=24V, TA=25°C) Parameter Symbol Conditions Min Typ. Max Unit Supply Voltage VCC Operating 3 24 40 V Output Stress Voltage Vstress 40 V Output leak Current Ileak OUT=H, VCC=24V, Vout=24V 26 uA Output Resistance of Turnoff Roff OUT=H 10 MΩ Output Low Voltage VOL OUT=L, VCC=24V, Isink=25mA 0.3 V Output Resistance of Turn on Ron OUT=L 10 Ω Supply Current ICC Output Open 0.4 0.5 0.6 mA Response Frequency F 1 100 KHz Note: a 1kOhm pull-up resistor is connected between VCC and VOUT, and a 100nF capacitor is connected between VCC and GND during all tests in the above table.
Datasheet V 1.1a Magnetic Characteristics (VCC = 24V, TA = 25°C) Parameters Symbol Min Typ. Max Units Operate Point BOP 70 G Release Point BRP 55 G Hysteresis BH 15 G Note: a 1kOhm pull -up resistor is connected between V CC and VOUT, and a 100nF capacitor is connected between V CC and GND during all tests in the above table. Voltage Characteristics Output Behavior vs. Magnetic Pole Parameter Test Conditions Output South Pole applicable to TO92S B > BOP Low (On) South Pole applicable to TO92S B < BOP High (Off) North Pole applicable to SOT23 B > BOP Low (On) North Pole applicable to SOT23 B < BOP High (Off) Note: when power is turned on under zero magnetic field, the output is “High”. Sensing Direction of Magnetic Field(Z-Axis) Magnetic Flux
Application Information
The output of the TMR1155 switches low (turns on) when a magnetic field to the sensing axis exceeds the operate point threshold, B OP. When the magnetic field is reduced below the release point, BRP, the device output switches high (turns off). The difference between the BOP and BRP is the hysteresis BH of the device.
Datasheet V 1.1a It is strongly recommended that an external bypass capacitor be connected in close proximity to the device between the supply and ground pins to reduce noise. The recommended value for the external bypass capacitor is 0.1μF.
Package Information
Datasheet V 1.1a TMR Sensor Position Top view and side view (unit: mm) MultiDimension Technology Co., Ltd. Address:No.7 Guangdong Road, Zhangjiagang Free Trade Zone, Jiangsu, 215634, China Web: www.dowaytech.com/en Email: info@dowaytech.com The information provided herein by MultiDimension Technology Co., Ltd. (hereinafter MultiDimension) is believed to be accurate and reliable. Publication neither conveys nor implies any license under patent or other industrial or intellectual property rights. MultiDi mension reserves the right to make changes to product specifications for the purpose of improving product quality, reliability, and functionality. MultiDimension does not assume any liability arising out of the application and use of its products. MultiDimension’s customers using or selling this product for use in appliances, devices, or systems where malfunction can reasonably be expected to result in personal injury do so at their own risk and agree to fully indemnify MultiDimension for any damages resulting from such applications.