TMR1102S

TMR1102 Microampere Unipolar Magnetic Switch Sensor DESCRIPTION TMR1102 is a unipolar magnetic switch specially designed and developed for applications which require high speed high sensitivity and high accuracy detection while meeting low power consumption requirements. TMR1102 integrates the high accuracy push-pull tunnel magnetoresistance (TMR) magnetic sensor and CMOS circuitry including an on-chip TMR voltage generator, comparator, Schmitt trigger and CMOS output, which is able to detect the change of magnetic field and output high and low voltage signals based on a preset threshold level. An internal band gap regulator is used to provide temperature compensated supply voltage for internal circuits, and it allows a wide range of operating supply voltages from 1.8 V to 5.5 V. TMR1102 is an ideal solution for many low-power, high-performance applications with micro-ampere level supply current, higher response frequency, a wide operating temperature range, and excellent anti-magnetic interference characteristics. It is available in packaging form factors of SOT23-3 (P/N: TMR1102S) FEATURES AND BENEFITS APPLICATIONS  Tunneling magnetoresistance (TMR) technology  Utility meters: water, gas, and heat meters  Low power consumption: 1.5 A  Solid state switches  High frequency response: >1 kHz  Position sensing  Unipolar operation  Speed sensing  Wide range supply voltages: 1.8 V~5.5 V  CMOS output  High sensitivity  Excellent temperature stability  High tolerance to external magnetic field interference TMR1102 Microampere Unipolar Magnetic Switch Sensor FUNCTIONAL BLOCK DIAGRAM VCC Power manag ement Latch & Driver Op amp VOUT TMR Offset compensation GND PIN CONFIGURATION AND SENSING DIRECTION Name Number Function VCC 1 Power supply VOUT 2 Output GND 3 Ground SWITCHING CHARACTERISTICS Parameter Test Conditions Output OP B > BOP Low (On) RP B < BRP High (Off) Note: The output is “High”, when power is on at zero magnetic field. B is the external magnetic field, BOP is the action point, and BRP is the release point. Switching Characteristics MultiDimension Technology Co., Ltd. Page 2 of 6 Ver. 1.0 TMR1102 Microampere Unipolar Magnetic Switch Sensor ABSOLUTE MAXIMUM RATINGS Parameters Symbol Min. Max. Unit Supply voltage VCC - 7 V Reverse supply voltage VRCC - 0.3 V IOUTSINK - 20 mA H - 4000 Gs VESD - 2 kV TA -40 125 °C TSTG -50 150 °C Output current External magnetic field ESD performance (HBM) Operating ambient temperature Storage ambient temperature ELECTRICAL SPECIFICATIONS Parameter VCC = 5.0 V, TA = 25 °C, unless otherwise specified Symbol Condition Min Typ. Max Unit Supply voltage VCC operating 1.8 3.0 5.5 V Output high voltage VOH - VCC -0.3 - VCC V Output low voltage VOL - - - 0.2 V Supply current ICC output open - 1.5 - A Response frequency Fr - - 1000 - Hz Note: a 0.1 F capacitor is connected between VCC and GND in all tests. MAGNETIC SPECIFICATIONS Parameter VCC = 5.0 V, TA = 25 °C, unless otherwise specified Symbol Min Typ. Max Unit Operate point BOP - 17 - Gs Release point BRP - 13 - Gs Hysteresis BH - 4 - Gs TYPICAL SWITCH POINTS CHARACTERISTICS Switch points vs temperature Switch points vs supply voltage 20.0 Switch Points (Gs) 17.5 BOP 15.0 BRP 12.5 10.0 7.5 5.0 Switch Points (Gs) 20.0 BOP 17.5 15.0 12.5 BRP 10.0 7.5 5.0 2.5 2.5 0.0 0.0 1.8 3.0 -60 -40 -20 0 20 40 60 80 100 120 140 160 5.5 Temperature (°C) Supply voltage (V) http://www.dowaytech.com/en/ Page 3 of 6 Ver. 1.0 TMR1102 Microampere Unipolar Magnetic Switch Sensor APPLICATION INFORMATION The TMR1102 outputs a low level, when the magnetic field along the sensing axis exceeds the operate point BOP, and the device outputs a high level, when the magnetic field is reduced below the release point B RP. The difference between the BOP and BRP is the hysteresis BH of the device. It is recommended to add a filter capacitor between the sensor power supply and ground (close to the sensor) to reduce external noise. As shown in the application circuit diagram, the typical value is 0.1 μF. Application Circuit Diagram CAUTION FOR USE Common failure conditions of TMR1102: ⚫ The supply voltage exceeds the maximum supply voltage of 7 V ⚫ Reverse power supply, and the voltage exceeds 0.3 V ⚫ Absence of matching filter capacitor to power supply when the power supply is unstable, which can cause the product to restart repeatedly ⚫ Using switch output voltage to control high-power relays, etc., exceeding 20 mA ⚫ The external magnetic field exceeds the external magnetic field limit value of 4000 Gs ⚫ Operating in a humid environment for a long time, causing vapor penetration and increased power consumption ⚫ Overheating when soldering ⚫ Over bending of pins MultiDimension Technology Co., Ltd. Page 4 of 6 Ver. 1.0 TMR1102 Microampere Unipolar Magnetic Switch Sensor SOLDERING INFORMATION Reflow Soldering Curve Lead-free soldering is recommended. The peak temperature in the figure of reflow soldering curve can be reduced to 230 °C for leaded soldering. It can cause sensor performance decay or permanent damage, if the peak temperature exceeds 265°C or exceeds the time defined by the reflow curve in the figure above. RECYCLING The product(s) in this document need to be handed over to a qualified solid waste management services company for recycling in accordance with relevant regulations on waste classification after the end of the product(s) life. DIMENSIONS Symbol A A1 A2 A3 b c D E E1 e e1 L L1 L2 θ http://www.dowaytech.com/en/ Page 5 of 6 Dimension (mm) Min. 0.00 0.90 0.60 0.35 0.12 2.85 2.60 1.55 0.85 1.80 0.35 Typ. 1.10 0.65 2.95 2.80 1.65 0.95 1.90 0.45 0.59 REF 0.25 BSC 0° - Dimension (inch) Max. Min. Typ. Max. 1.45 0.15 1.30 0.70 0.49 0.19 3.05 3.00 1.75 1.05 2.00 0.60 0.000 0.035 0.024 0.014 0.005 0.112 0.102 0.061 0.033 0.071 0.014 0.057 0.006 0.051 0.028 0.019 0.007 0.120 0.118 0.069 0.041 0.079 0.024 8° 0° 0.043 0.026 0.116 0.110 0.065 0.037 0.075 0.018 0.023 REF 0.010 BSC - 8° Ver. 1.0 TMR1102 Microampere Unipolar Magnetic Switch Sensor ACTIVE AREA POSITIONING Top and side view of SOT23-3 (unit: mm) IMPORTANT NOTICE 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 noninfringement 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 profits, 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’ 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. Specifications may change without notice. Please download latest document from our official website www.dowaytech.com/en . MultiDimension Technology Co., Ltd. No.2 Guangdong Road, Zhangjiagang Free Trade Zone Jiangsu, 215634, China www.dowaytech.com/en info@dowaytech.com MultiDimension Technology Co., Ltd. Page 6 of 6 Ver. 1.0