TMR1348 MULTIDIMENSION | Alldatasheet
Document overview
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Technical content
Description
TMR1348 is an omnipolar magnetic switch integrated the tunneling magnetoresistance (TMR) magnetic sensor and CMOS circuitry, which is able to detect the change of magnetic field and output high and low voltage signals for high accuracy position detection. Unlike Hall/AMR sensors, TMR sensors with extremely high resistance values allows TMR1348 to achieve the supply current as low as 1.5 μA while operating in the full-time power supply mode, and maintaining high-speed operation with the response frequency at 1 kHz. Therefore, TMR1348 can provide true continuous detection of magnetic field signals, avoiding sampling errors from the traditional time-sharing power supply mode. TMR1348 allows a wide range of operating supply voltages from 1.8 V to 5.5 V with excellent temperature characteristics, and can meet the requirements of most applications. Features and benefits
- Tunneling magnetoresistance (TMR) technology
- Low power consumption: supply current 1.5 μA
- High frequency response: typ.1 kHz
- Omnipolar operation
- Wide range supply voltages: 1.8 V to 5.5 V
- Open-drain output
- High sensitivity
- Excellent temperature stability
- High tolerance to external magnetic field interference
- RoHS & REACH compliant
- AEC-Q100 qualified
- MSL1
Applications
- Utility meters: water, gas, and heat meters
- Proximity switches
- Speed sensing
- Linear and rotation position sensing
- Wake-up switches
- Liquid level sensors VOUT H MicroAmpere High Frequency Response Omnipolar Magnetic Switch Sensor TMR1348 SOT23-3 Datasheet MultiDimension Technology Co., Ltd. http://www.dowaytech.com/en/ Version 2.0.1
Point Package Packing Form TMR1348S 1.5 μA 1 kHz -40 °C to 125 °C ±14 Gs ±10 Gs SOT23-3 Tape & Reel Note: Please contact MultiDimension Technology local sales for customizing operating and release points. Catalogue MultiDimension Technology Co., Ltd. http://www.dowaytech.com/en/ TMR1348 MicroAmpere High Frequency Response Omnipolar Magnetic Switch Sensor
Figure 1. Block diagram
- Switching Characteristics
Figure 2. Sensing direction release point BRPS (BRPN) as shown in Figure 3. Figure 3. Switching characteristics Figure 4. Pin configuration (SOT23-3)
1 VCC Power supply
2 VOUT Output
3 GND Ground
MultiDimension Technology Co., Ltd.
- Absolute Maximum Ratings Parameters Symbol Min. Max. Unit Supply voltage VCC -0.3 7 V Output current ISINK [1] - 20 mA Magnetic flux density B - 4000 Gs ESD performance (HBM) VESD - 4 kV Operating ambient temperature TA -40 125 °C Storage ambient temperature TSTG -50 150 °C [1] ISINK is the current flowing through VOUT pin to GND pin. 5. Electrical Specifications VCC = 3 V, TA = 25 °C, a 0.1 μF capacitor is connected between VCC and GND Parameter Symbol Condition Min. Typ. Max. Unit Supply voltage VCC operating 1.8 3.0 5.5 V Output stress voltage Vstress - - - 5.5 V Output leak current Ileak OUT = H - - 1 μA Off resistance of output ROFF OUT = H - 30 - MΩ On resistance of output RON OUT = L - 0.75 1 Ω Output high voltage VOH RP [2] - VCC V Output low voltage VOL OP 0 - 0.2 V Supply current ICC OP/RP 0.5 1.5 2 μA Response frequency F - 0 to 1000 Hz [2] The min value of VOH depends on the pull-up resistor and the leakage current following through the resistor. 6. Magnetic Specifications VCC = 3 V, TA = 25 °C, a 0.1 μF capacitor is connected between VCC and GND TMR1348S Parameter Symbol Min. Typ. Max. Unit Operate point BOPS 10 14 25 Gs BOPN -25 -14 -10 Gs Release point BRPS 5 10 20 Gs BRPN -20 -10 -5 Gs Hysteresis BH 2 4 8 Gs MultiDimension Technology Co., Ltd. http://www.dowaytech.com/en/ TMR1348 MicroAmpere High Frequency Response Omnipolar Magnetic Switch Sensor
Figure 11. Package outline of SOT23-3 (unit: mm) MultiDimension Technology Co., Ltd.
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