MMS105H Tunneling Magnetoresistance Bipolar Switch General Description The MMS105H is a Bipolar Digital Switch that integrates TMR and CMOS technology in order to provide a magnetically triggered switch with high sensitivity, high speed, and low power consumption, for use in high accuracy applications. This device utilizes a push-pull half-bridge TMR magnetic sensor and CMOS signal processing circuitry within the same package. The device includes an on-chip temperature compensated TMR voltage generator for precise magnetic sensing, a comparator, TMR voltage amplifier, a Schmitt trigger to provide switching hysteresis for noise rejection, and an open-collector output. An internal band gap regulator is used to provide temperature compensated supply voltage for the CMOS circuitry, which allows a wide operating VCC range. The MMS105H has fast response, highly accurate switching points, a wide operating temperature range of -40 °C to 125 °C, and excellent ESD immunity. Features and Benefits • • • • • • • • Tunneling Magnetoresistance (TMR) Technology Bipolar Latching Operation Low Operate Points for High Sensitivity Extremely Low Power Consumption Compatible with a Wide Range of Supply Voltages Excellent Thermal Stability High-speed Detection High ESD Tolerance Applications • • • • • Utility Meters Including Water, Gas, and Heat Solid State Switching Speed Sensing Rotary Position Sensing Linear Displacement Sensing Page 1 Nanjing Ouzhuo Technology co., Ltd www.ohhall.com Tel：86-25-52312738，86-25-83247886 FAX: 86-25-52312738 www.zbling.com E-mail: [email protected] MMS105H Tunneling Magnetoresistance Bipolar Switch Block Diagram n Absolute Maximum Ratings Parameter Supply Voltage Supply Current Output Off Voltage Output Current Operating Temperature Storage Temperature ESD level(HBM) Symbol VCC ICC VOUT IOUT TA TSTG VESD Limit 6 20 6 30 -40 ~ 125 -50 ~ +150 >4 Unit V mA V mA °C °C kV Electrical Characteristics (TA=+25 =+25°°C) Parameter Supply Voltage Supply Current Output Current High Level Output Low Level Output Response Frequency Operation Temperature Symbol VCC ICC IOUT VOL VOH F TA Condition Min 1.8 Typ 3.0 6 10 VCC = 3.0V Page 2 Nanjing Ouzhuo Technology co., Ltd www.ohhall.com Tel：86-25-52312738，86-25-83247886 FAX: 86-25-52312738 Max 5.5 8 VCC-0.2 0.2 10 -40 125 www.zbling.com E-mail: [email protected] Unit V μA mA V V kHz °C MMS105H Tunneling Magnetoresistance Bipolar Switch Magnetic Characteristics (VCC=3.0 V) Parameters Operate Point Release Point Hysteresis Symbol BOP BRP BH Conditions TA = 25°C TA = 25°C TA = 25°C Min Typ. 50 -50 100 Output Behavior versus Magnetic Pole Parameter South pole North pole Test Conditions B > BOP B < BRP Output Low High Magnetic Field Sensing Axis Magnetic Flux Functional Description The output of the MMS105H switches low (turns on) when a magnetic field applied along the sensing axis of the TMR sensor exceeds the operate point threshold, BOP. When the magnetic field is reduced below the release point, BRP, the device output goes high (turns off). The difference between operate and release points, BOP-BRP = BH, is defined as the hysteresis of the device. It is strongly recommended that an external bypass capacitor of at least 0.1 μ F be connected between the supply and ground connections and in close proximity to the MMS105H to reduce noise and improve switching accuracy. Page 3 Nanjing Ouzhuo Technology co., Ltd www.ohhall.com Tel：86-25-52312738，86-25-83247886 FAX: 86-25-52312738 www.zbling.com E-mail: [email protected] Max Units G G G MMS105H Tunneling Magnetoresistance Bipolar Switch Voltage and Temperature Characteristics Pin Configuration Pin Name VOUT GND VCC Pin No. TO-92 1 2 3 SOT23-3 2 3 1 Page 4 Nanjing Ouzhuo Technology co., Ltd www.ohhall.com Tel：86-25-52312738，86-25-83247886 FAX: 86-25-52312738 Pin Function Output Ground Supply Voltage www.zbling.com E-mail: [email protected] MMS105H Tunneling Magnetoresistance Bipolar Switch Package Information Page 5 Nanjing Ouzhuo Technology co., Ltd www.ohhall.com Tel：86-25-52312738，86-25-83247886 FAX: 86-25-52312738 www.zbling.com E-mail: [email protected]