MT1322 Series CMOS, Omni-polar, Low Power Hall Sensor Applications Features and Benefits CMOS Technology Magnetic Type: Omni-polar Operating Voltage Range: Supply Voltage 2.2~5.5V Specified Operating Temperature Range: From –40 ~85 High Magnetic Sensitivity Bop=18Gauss, Brp=10Gauss (South) Bop=-18Gauss, Brp=-10Gauss (North) Lower Power Consumption Average Supply Current <4uA (typical) Lead Free Package Flat TO-92, SOT-23 High ESD Rating Internal 100K Pull -up Resistor RoHS Compliant 2011/65/EU Smart meter Hand held Devices ℃ ℃ Family Members Part number Description MT1322A Flat TO-92 package, bulk packaging (1000pcs /bag) MT1322A-T Flat TO-92 package, Radial lead, bulk packaging (1000pcs/bag) MT1322AT SOT-23 package, tape and reel packaging (3000pcs/bag) General Description The MT1322 family, produced with CMOS technology, The Hall IC internally includes an on-chip Hall voltage generator, a voltage regulator for operation with supply voltages of 2.2 to 5.5V, sleep/awake logic for low power consumption, temperature compensation circuitry, small-signal amplifier, Hall sensor with dynamic offset cancellation system, Schmitt trigger and an output driver with a100K pull-up resistor. They are designed to respond to a either a North pole or a South 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 MT1322 family provides a variety of packages to customers: SOT-23 for surface mount and TO-92 flat for through-hole mount. All packages are RoHS compliant. www.magntek.de Rev.3 01/2014 01/08 MT1322 Series CMOS, Omni-polar, Low Power Hall Sensor Vs Sleep/Awake Bias Reference Dynamic offset OSC Logic R cancellation ESD VOUT Output ITA element COMP ESD Hall Stage GND Functional Block Diagram Function Description Definition of Magnetic Parameters BOP: Operating Point Magnetic flux density applied on the branded side of the package which turns the output driver ON (VOUT = Low) BRP: Release Point Magnetic flux density applied on the branded side of the package which turns the output driver OFF (VOUT = high) BHYST: Hysteresis Window BOP-BRP Definition of Switching Function North Pole BOP BRP Output (V) Output (V) 0 0 Switching Behavior www.magntek.de Rev.3 01/2014 02/08 BRP BOP South Pole MT1322 Series CMOS Omni-polar, Low Power Hall Sensor OR OR N S S Motion N N S O N R S O R OUT=Low OUT=High OUT=Low Switching Point of AT OUT=High Switching Point of A Direction of magnetic flux Note: Pin Description MT1322A (MT1322A-T) MT1322AT Name Number Description Name Number Description Vs 1 Power GND 3 Ground Vs GND 1 2 Power Ground Output 2 Include pull-up resistor Output 3 Include pull-up resistor www.magntek.de Rev.3 01/2014 03/08 MT1322 Series CMOS Omni-polar, Low Power Hall Sensor 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 GND. Symbol Parameters Min Max Units VS Supply Voltage - 5.5 V VRCC Reverse Battery Voltage - -0.5 V VOUT Output Voltage - 5.5 V IOUT Continuous output current - 10 mA TA Operating Ambient Temperature -40 85 Ts Storage temperature -50 150 TJ Junction temperature - 150 B Magnetic flux ℃ ℃ ℃ No Limit Gauss MT1322 Series Specifications at TA = -40 ℃ to 85 ℃, Vs = 2.2V to 5.5V (unless otherwise specified) Symbol Parameter Test Condition Min VS Supply Voltage Operating 2.2 IS(AVG) IS(EN) Supply Current IS(DIS) Typ Max Units 5.5 V B<BRP , Vs=3.6V - 4 6 uA Chip awake, B<BRP , Vs=3.6V - 2 3 mA Chip asleep, B<BRP, Vs=3.6V - 2 3 uA VSON Output Saturation VoltageI B>BOP - - 0.4 V IOFF Output Leakage Current B<BRP, VOUT=5V - - 0.1 uA TAW Awake Time VS =3.6V 30 50 70 uS TSL Sleep Time VS =3.6V 30 35 40 mS D.C. Duty Cycle - 0.17 - % BOP Magnetic Operating Point +/-13 +/-18 +/-23 Gauss BRP Magnetic Release Point +/-5 +/-10 +/-15 Gauss BHYST Hysteresis Window - 8 - Gauss ESD Electro-Static Discharge - 4 - KV www.magntek.de Rev.3 01/2014 ∣B ∣ OP-BRP HBM 04/08 MT1322 Series CMOS Omni-polar, Low Power Hall Sensor Typical Application Circuit VS VDD 100nf MT1322 OUT 20pf GND Typical Output Waveform (The TO-92 package as an example ) BOPS BRPS Magnetic Field BRPN BOPN ICC(EN) Supply Current ICC(DIS) High Digital Output Low www.magntek.de Rev.3 01/2014 05/08 MT1322 Series CMOS Omni-polar, Low Power Hall Sensor PACKAGE DESIGNATOR (MT1322A) TO-92 Flat Symbol A A1 b b1 C D D1 E e e1 L θ www.magntek.de Rev.3 01/2014 Dimensions in Millimeters Min Max 1.420 1.620 0.660 0.860 0.350 0.480 0.400 0.550 0.360 0.510 3.900 4.200 2.970 3.270 2.870 3.124 1.270 TYP. 2.440 2.640 13.600 15.500 45°TYP. 06/08 Dimensions in Inches Min Max 0.056 0.064 0.026 0.034 0.014 0.019 0.016 0.022 0.014 0.020 0.154 0.165 0.117 0.129 0.113 0.123 0.050 TYP. 0.096 0.104 0.535 0.610 45°TYP. MT1322 Series CMOS Omni-polar, Low Power Hall Sensor PACKAGE DESIGNATOR (MT1322A-T) Flat TO-92 Radial lead Symbol A A1 b b1 C D D1 E e e1 L L1 θ www.magntek.de Rev.3 01/2014 Dimensions in Millimeters Min Max 1.420 1.620 0.660 0.860 0.350 0.480 0.400 0.550 0.360 0.510 3.900 4.200 2.970 3.270 2.870 3.124 2.540 TYP. 5.080 TYP. 14.300 REF. 2.150 REF. 45°TYP. 07/08 Dimensions in Inches Min Max 0.056 0.064 0.026 0.034 0.014 0.019 0.016 0.022 0.014 0.020 0.154 0.165 0.117 0.129 0.113 0.123 0.100 TYP. 0.200 TYP. 0.563 REF. 0.085 REF. 45°TYP. MT1322 Series CMOS Omni-polar, Low Power Hall Sensor PACKAGE DESIGNATOR (MT1322AT) SOT-23-3L Symbol A A1 A2 b c D E E1 e e1 L θ www.magntek.de Rev.3 01/2014 Dimensions in Millimeters Min Max 1.050 1.250 0.000 0.100 1.050 1.150 0.300 0.500 0.100 0.200 2.820 3.020 1.500 1.700 2.650 2.950 0.950 TYP. 1.800 2.000 0.300 0.600 0° 8° 08/08 Dimensions in Inches Min Max 0.041 0.049 0.000 0.004 0.041 0.045 0.012 0.020 0.004 0.008 0.111 0.119 0.059 0.067 0.104 0.116 0.037 TYP. 0.071 0.079 0.012 0.024 0° 8°