TMR1148 MULTIDIMENSION | Alldatasheet
Document overview
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Technical content
Description
TMR1148 is a unipolar 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 TMR1148 to achieve the supply current as low as 1.5 μA while operating in the full-time power supply mode, and maintaining the response frequency of the magnetic signal is 1 kHz. Therefore, TMR1148 can provide true continuous detection of magnetic field signals, avoiding sampling errors from the traditional time-sharing power supply mode. Features and benefits
- Tunneling magnetoresistance (TMR) technology
- Low power consumption: supply current 1.5 μA
- High frequency response: typ. 1 kHz
- Unipolar 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
- Validation according to AEC-Q100 Grade1
- Fulfill MSL 1
Applications
- Utility meters: water, gas, and heat meters
- Proximity switches
- Speed sensing
- Linear and rotation position sensing
- Wake-up switch
- Level switch VOUT H MicroAmpere High Frequency Response Unipolar Magnetic Switch Sensor TMR1148 SOT23-3 Datasheet MultiDimension Technology Co., Ltd. http://www.dowaytech.com/en/ Version 2.0
Point Package Packing Form TMR1148S 1.5 μA 0 to 1 kHz -40 °C to 125 °C 15 Gs 10 Gs SOT23-3 Tape & Reel Note: Please contact MultiDimension Technology local sales representative for customizing BOP and BRP information. Catalogue MultiDimension Technology Co., Ltd. http://www.dowaytech.com/en/ TMR1148 MicroAmpere High Frequency Response Unipolar Magnetic Switch Sensor
after processing by the circuit as shown in Figure 1. Figure 1. Block diagram
- Switching Characteristics
Figure 2. Sensing direction the difference between BOP and BRP . 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 - 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 Note: ISINK is the current flowing through the pin of sensor, when the output is turned on. 5. Electrical Specifications VCC = 3.0 V, TA = 25 °C, a 0.1 μF capacitor is connected between VCC and GND unless specified otherwise 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 On resistance of output RON OUT = L - 0.75 1 Ω Off resistance of output ROFF OUT = H - 30 - MΩ Output high voltage VOH RP status [2] - VCC V Output low voltage VOL OP status 0 - 0.2 V Supply current ICC OP and RP status 0.5 1.5 2 μA Power-on time tPO VCC = 3.0 V - - 400 μs Power-on current IPO VCC = 3.0 V - - 10 μA Response frequency F - 0 to 1000 Hz [2] V OH is affected by the resistance of the switch output pull-up resistor and the leakage current flowing through the pull-up resistor. 6. Magnetic Specifications VCC = 3.0 V, TA = 25 °C, a 0.1 μF capacitor is connected between VCC and GND unless specified otherwise Parameter Symbol Min. Typ. Max. Unit Operate point BOP 10 15 25 Gs Release point BRP 5 10 20 Gs Hysteresis BH 2 5 9 Gs MultiDimension Technology Co., Ltd. http://www.dowaytech.com/en/ TMR1148 MicroAmpere High Frequency Response Unipolar Magnetic Switch Sensor
Figure 11. Package outline of SOT23-3 (unit: mm) MultiDimension Technology Co., Ltd.
No.2 Guangdong Road, Zhangjiagang Free Trade Zone, Jiangsu, China Web：www.dowaytech.com/en E-mail：info@dowaytech.com Copyright © 2022 by MultiDimension Technology Co., Ltd. Information furnished herein by MultiDimension Technology Co., Ltd. (hereinafter MDT) is believed to be accurate and reliable. However, MDT disclaims any and all warranties and liabilities of any kind, with respect to any examples, hints or any performance or use of technical data as described herein and/or any information regarding the application of the product, including without limitation warranties of non-infringement of intellectual property rights of any third party. This document neither conveys nor implies any license under patent or other industrial or intellectual property rights. Customer or any third-party must further determine the suitability of the MDT products for its applications to avoid the applications default of customer or third-party. MDT accept no liability in this respect. MDT does not assume any liabilities of any indirect, incidental, punitive, special or consequential damages (including without limitation of lost profi ts, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory. Notwithstanding any damages that customer might incur for any reason whatsoever, MDT’s aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the terms and conditions of commercial sale of MDT. Absolute maximum ratings are the extreme limits the device will withstand without damage to the MDT product. However, the electrical and mechanical characteristics are not guaranteed as the maximum limits (above recommended operating conditions) are approached. MDT disclaims any and all warranties and liabilities of the MDT product will operate at absolute maximum ratings. Specifi cations may change without notice. Please download latest document from our offi cial website www.dowaytech.com/en. Recycling The product(s) in this document need to be handed over to a qualifi ed solid waste management services company for recycling in accordance with relevant regulations on waste classifi cation after the end of the product(s) life.