MT1321 Series CMOS, Omni-polar, Low Power Hall Sensor

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Shonda Ward
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1 MT1321 eries CMO, Omni-polar, Low Power Hall ensor Features and Benefits CMO Technology Magnetic - Type: Omni - polar Operating Voltage Range: upply Voltage 2.2~5V pecified Operating Temperature Range: From 40 ~125 High Magnetic ensitivity Bop=35Gauss, Brp=20Gauss (outh) Bop=-35Gauss, Brp=-20Gauss (orth) Lower Power Consumption Average upply Current <3uA (typical) Lead Free Package Flat TO-92, OT-23 High ED Rating Open Drain Output RoH Compliant 2011/65/EU Applications Home appliances, Industrial Position Detection olid-tate witch Proximity witch mart Meter Family Members Part number MT1321A MT1321A-T MT1321AT OT-23 package, tape and reel packaging (3000pcs/bag) MT1321ET General Description Description Flat TO-92 package, bulk packaging (1000pcs/bag) Flat TO-92 package, Radial lead, bulk packaging (1000pcs/bag) OT-23(thin outline) package, tape and reel packaging (3000pcs/bag) The MT1321 family, produced with CMO technology, The Hall IC internally includes an on-chip Hall voltage generator, a voltage regulator for operation with supply voltages of 2.2 to 5V, a sleep/awake logic for low power consumption, temperature compensation circuitry, small-signal amplifier, Hall sensor with dynamic offset cancellation system, chmitt trigger and an open-drain output. They are designed to respond to a either a orth pole or a outh pole. While the magnetic flux density(b) is larger than operate point (Bop), the output will be turned on (Low), While the magnetic flux density(b) is lower than release point (Brp), then turn off (High). The MT1321 family provides a variety of packages to customers: OT-23 for surface mount and TO-92 flat for through-hole mount. All packages are RoH compliant. 01/09

2 MT1321 eries CMO, Omni-polar, Low Power Hall ensor Vs Bias Reference leep/awake Logic OC Dynamic offset cancellation ED Hall element ITA COMP Output tage ED VOUT GD Functional Block Diagram Function Description Definition of Magnetic Parameters BOP: BRP: Operating Point Magnetic flux density applied on the branded side of the package which turns the output driver O (V OUT = Low) Release Point Magnetic flux density applied on the branded side of the package which turns the output driver OFF (V OUT = high) BHYT: Hysteresis Window BOP-BRP Definition of witching Function Output (V) Output (V) orth Pole B OP B RP 0 0 B RP B OP outh Pole witching Behavior 02/09

3 MT1321 eries CMO Omni-polar, Low Power Hall ensor Motion OUT=Low witching Point of AT OUT=High OUT=Low witching Point of A OUT=High Motion OUT=Low OUT=High witching Point of ET ote: Direction of magnetic flux Pin Description MT1321AT ame umber Description Vcc 1 Power GD 3 Ground Output 2 Open-Drain output MT1321A (MT1321A-T) ame umber Description Vcc 1 Power GD 2 Ground Output 3 Open-Drain output MT1321ET ame umber Description Vcc 1 Power GD 3 Ground Output 2 Open-Drain output 03/09

4 MT1321 eries CMO Omni-polar, Low Power Hall ensor Electrical and Magnetic Characteristics Absolute Maximum Ratings Absolute maximum ratings are limiting values to be applied individually, and beyond which the serviceability of the circuit may be impaired. Functional operability is not necessarily implied. Exposure to absolute maximum rating conditions for an extended period of time may affect device reliability. Absolute maximum ratings: all voltages listed are referenced to GD. ymbol Parameters Min Max Units V V RCC V OUT I OUT upply Voltage V Reverse Battery Voltage V Output Voltage V Continuous output current - 5 ma T A Operating Ambient Temperature T s torage temperature T J Junction temperature B Magnetic flux o Limit Gauss MT1321 eries pecifications at T A = -40 to 125, Vs = 2.2 V to 5V (unless otherwise specified) ymbol Parameter Test Condition Min Typ Max Units V I (AVG) upply Voltage Operating V B<B RP, Vs=3.6V I (E) upply Current Chip awake, B<B RP I (DI) Chip asleep, B<B RP V O Output aturation Voltage I OUT=1mA, B>B OP ua ma ua V I OFF Output Leakage Current B<B RP, V OUT =5V ua T AW Awake Time V T L leep Time V =3.6V u =3.6V m D.C. Duty Cycle % B OP B RP Magnetic Operating Point Magnetic Release Point B HYT Hysteresis Window B OP-B RP, Vs=3.6V, Vs=3.6V - +/-35 +/-50 Gauss +/-10 +/-20 - Gauss Gauss ED Electro-tatic Discharge HBM KV 04/09

5 MT1321 eries CMO Omni-polar, Low Power Hall ensor Typical Application Circuit ote: R L recommend 100Kohm V 100nf VDD MT1321 OUT RL 1nf GD Typical Output Waveform B OP Magnetic Field B RP B RP B OP I CC(E) upply Current I CC(DI) High Digital Output Low Power On Output Waveform VDD Magnetic Field B>BOP B<BRP Digital Output Toh ote:vdd power on raise <1us, Time of output start up high level Toh=100~150us when B>BOP 05/09

6 MT1321 eries CMO Omni-polar, Low Power Hall ensor PACKAGE DEIGAT (MT1321A) TO-92 Flat ymbol Dimensions in Millimeters Dimensions in Inches Min Max Min Max A A b b C D D E e TYP TYP. e L θ 45 TYP. 45 TYP. 06/09

7 MT1321 eries CMO Omni-polar, Low Power Hall ensor PACKAGE DEIGAT (MT1321A-T) Flat TO-92 Radial lead ymbol Dimensions in Millimeters Dimensions in Inches Min Max Min Max A A b b C D D E e TYP TYP. e TYP TYP. L REF REF. L REF REF. θ 45 TYP. 45 TYP. 07/09

8 MT1321 eries CMO Omni-polar, Low Power Hall ensor PACKAGE DEIGAT (MT1321AT) OT-23-3L ymbol Dimensions in Millimeters Dimensions in Inches Min Max Min Max A A A b c D E E e TYP TYP. e L θ /09

9 MT1321 eries CMO Omni-polar, Low Power Hall ensor PACKAGE DEIGAT (MT1321ET) OT-23 ymbol Dimensions in Millimeters Dimensions in Inches Min Max Min Max A A A b c D E E e TYP TYP. e L REF REF. L θ /09

MT1401A-T Flat TO-92 package, Radial lead, bulk packaging (1000pcs/bag)

MT1401A-T Flat TO-92 package, Radial lead, bulk packaging (1000pcs/bag) Features and Benefits CMO Technology Magnetic Type: Latch Wide Operating Voltage Range: upply Voltage 2.8~18V pecified Operating Temperature Range: From 40 ~125 High Magnetic ensitivity Bop=20Gauss, Brp=-20Gauss