A Product Line of Diodes Incorporated AH920 HIGH SENSITIVITY CMOS HALL-EFFECT LATCH Description Pin Assignments The AH920 is a Hall-effect latch designed in mixed signal CMOS technology. It is quite suitable for use in automotive, industrial and consumer applications. (Front View) Superior high-temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device over-molding, temperature dependencies, and thermal stress. The device integrates a voltage regulator, Hallvoltage generator, small-signal amplifier, chopper stabilization, schmitt trigger, and open-drain output. 3 OUT 2 GND 1 VCC TO-92S-3 (Z3 Package) (Top View) An on-board regulator permits operation with supply voltage from 3.5V to 20V. GND 3 The AH920 is available in TO-92S-3 and SOT-23-3 packages, which are optimized for most applications. Features 1 2 VCC OUT SOT-23-3 (N Package) Wide Operating Voltage Range from 3.5V to 20V Symmetrical Switch Points Chopper-stabilized Amplifier Stage Superior Temperature Stability Open-drain Output Compact Size ESD Rating: 6000V (Human Body Model) Applications Brushless DC Motor Commutation Brushless DC Fan Solid-state Switch Revolution Counting Speed Detection High Sensitivity and Unconnected Switch Typical Applications Circuit VCC1 RL OUT RL VCC AH920 GND GND CL 0.1mF Output VCC VCC AH920 OUT Output CL 0.1mF VCC2 AH920 Document number: DS36768 Rev. 2 - 2 1 of 13 www.diodes.com December 2013 © Diodes Incorporated A Product Line of Diodes Incorporated AH920 Pin Descriptions Pin Number Pin Name Function TO-92S-3 SOT-23-3 1 1 VCC Supply voltage 2 3 GND Ground pin 3 2 OUT Output Pin Functional Block Diagram VCC OUT 1 (1) 3 (2) Reference Voltage Hall Sense Chopper Switch AMP 2 (3) A (B) A for TO-92S-3 B for SOT-23-3 AH920 Document number: DS36768 Rev. 2 - 2 GND 2 of 13 www.diodes.com December 2013 © Diodes Incorporated A Product Line of Diodes Incorporated AH920 Absolute Maximum Ratings (Note 1) Symbol Parameter Value Unit VCC Supply Voltage 20 V ICC Supply Current (Fault) 5 mA IOUT Output Current (Continuous) 25 mA PD Power Dissipation TA TSTG TJ (Max) ESD TO-92S-3 400 SOT-23-3 230 mW Operation Temperature -50 to +150 ºC Storage Temperature -65 to +150 ºC Maximum Junction Temperature +165 ºC ESD (Human Body Model) 6000 V Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. Recommended Operating Conditions Symbol Parameter Min Max Unit VCC Supply Voltage 3.5 20 V TA Operating Ambient Temperature -40 +125 ºC AH920 Document number: DS36768 Rev. 2 - 2 3 of 13 www.diodes.com December 2013 © Diodes Incorporated A Product Line of Diodes Incorporated AH920 Electrical Characteristics Symbol (@VCC =12V, TA =+25°C, unless otherwise specified.) Parameter Min Typ Max Unit 3.5 12 20 V VCC=12V, B<BRP 3.0 5.0 mA VCC=12V, B>BOP 3.0 5.0 mA Saturation Voltage IOUT=20mA, B>BOP 185 500 mV Output Leakage Current VOUT=20V, B<BRP 0.1 10 μA tRISING Output Rising Time RL=1kΩ,CL=20pF 0.4 2 μs tFALLING Output Falling Time RL=1kΩ,CL=20pF 0.4 2 μs VCC Supply Voltage ICC Supply Current VSAT ILEAKAGE Conditions Operating Magnetic Characteristics (@VCC=12V, TA=+25°C, unless otherwise specified.) Symbol Parameter Min Typ Max Unit BOP Operating Point 5 22 40 Gauss BRP Releasing Point -40 -22 -5 Gauss BHYS Hysteresis 45 Gauss VOUT VOUT VCC VCC Vd High Vd High BHYS BHYS Low VSAT BRP N Low BOP 0 BRP N S BOP 0 VSAT S For SOT-23-3 For TO-92S-3 Figure 1. Magnetic Flux Density of AH920 AH920 Document number: DS36768 Rev. 2 - 2 4 of 13 www.diodes.com December 2013 © Diodes Incorporated A Product Line of Diodes Incorporated AH920 Magnetic Characteristics (Cont.) South Pole North Pole Output=Low (For TO-92S-3) Output=High (For TO-92S-3) North Pole South Pole Output=High (For SOT-23-3) Output=Low (For SOT-23-3) Figure 2. Output Status vs. Magnetic Pole Package Type Parameter Test Condition Output South Pole B＞BOP Low North Pole B＜BRP High South Pole B＞BOP High North Pole B＜BRP Low TO-92S-3 SOT-23-3 Table 1. Output Status vs. Magnetic Pole AH920 Document number: DS36768 Rev. 2 - 2 5 of 13 www.diodes.com December 2013 © Diodes Incorporated A Product Line of Diodes Incorporated AH920 Magnetic Characteristics (Cont.) AH920 OUT VCC 10k GND DC V Figure 3. Magnetic Thresholds Note 2: BOP is determined by putting the device under magnetic field swept from B RP (Min) to BOP (Max) until the output is switched on. Note 3: BRP is determined by putting the device under magnetic field swept from BOP (Max) to BRP (Min) until the output is switched off. Test Circuit and Test Conditions VCC1 RL GND CL 20pF VCC AH920 OUT Output VCC2 Figure 4. Test Circuit of AH920 AH920 Document number: DS36768 Rev. 2 - 2 6 of 13 www.diodes.com December 2013 © Diodes Incorporated A Product Line of Diodes Incorporated AH920 VCC ICC A AH920 OUT Test Circuit and Test Conditions (Cont.) Output GND DC Figure 5. Test Condition of AH920 (Supply Current) DC 3.5/20V OUT VCC Note 4: Output initial status is low when powering on. Note 5: The supply current ICC represents the average supply current. The output is open during measurement. Note 6: The device is put under the magnetic field: B<BRP. AH920 GND 20mA Output V VSAT Figure 6. Test Condition of AH920 (Output Saturation Voltage) Note 7: The output saturation voltage VSAT is measured at VCC=3.5V and VCC=20V. Note 8: The device is put under the magnetic field: B>BOP. AH920 Document number: DS36768 Rev. 2 - 2 7 of 13 www.diodes.com December 2013 © Diodes Incorporated A Product Line of Diodes Incorporated AH920 AH920 GND IOFF A OUT VCC Test Circuit and Test Conditions (Cont.) DC 12V DC 20V Figure 7. Test Condition of AH920 (Output Leakage Current) Note 9: The device is put under the magnetic field: B<BRP. Typical Performance Characteristics ICC vs. VCC ICC vs. TA 4.0 4.0 VCC=5V 3.5 VCC=12V 3.5 3.0 ICC (mA) ICC (mA) 3.0 2.5 2.0 2.5 2.0 1.5 O 1.0 1.5 TA=25 C 4 6 8 10 12 14 16 18 20 -25 AH920 Document number: DS36768 Rev. 2 - 2 0 25 50 75 100 125 O VCC (V) TA ( C) 8 of 13 www.diodes.com December 2013 © Diodes Incorporated A Product Line of Diodes Incorporated AH920 Typical Performance Characteristics (Cont.) BOP/BRP/BHYS vs. VCC BOP/BRP/BHYS vs. TA 50 40 40 30 BOP/BRP/BHYS (Gauss) BOP/BRP/BHYS (Gauss) 30 20 BOP 10 BRP 0 BHYS O TA=25 C -10 20 10 BOP 0 BRP BHYS -10 VCC=12V -20 -20 5 10 15 -25 20 0 25 50 75 100 125 O VCC (V) TA ( C) VSAT vs. IOUT VSAT vs. TA 180 240 160 220 140 200 120 VSAT (mV) VSAT (mV) 180 100 80 160 140 60 40 120 O TA=25 C 20 VCC=12V 0 0 5 10 15 20 VCC=5V VCC=12V 100 -25 25 0 25 50 75 100 125 O TA ( C) IOUT (mA) PD vs. TA 450 SOT-23-3 TO-92S-3 400 350 PD (mW) 300 250 200 150 100 50 0 0 25 50 75 100 125 150 O TA ( C) AH920 Document number: DS36768 Rev. 2 - 2 9 of 13 www.diodes.com December 2013 © Diodes Incorporated A Product Line of Diodes Incorporated AH920 Ordering Information AH920 XX XX - XX Product Name Package Packing RoHS/Green Z3 : TO-92S-3 N : SOT-23-3 TR : Tape & Reel Blank : Bulk G1 : Green Package Temperature Range Part Number Marking ID Packing Type TO-92S-3 -40 to 125°C AH920Z3-G1 920 Bulk SOT-23-3 -40 to 125°C AH920NTR-G1 GS7 Tape & Reel BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant and green. AH920 Document number: DS36768 Rev. 2 - 2 10 of 13 www.diodes.com December 2013 © Diodes Incorporated A Product Line of Diodes Incorporated AH920 Package Outline Dimensions (All dimensions in mm(inch).) (1) Package Type: TO-92S-3 44 46 0.750(0.030) TYP 1.420(0.056) 1.620(0.064) 3.850(0.152) 4.150(0.163) 1.200(0.047) 1.500(0.059) 1.850(0.073) 2.150(0.085) 2.900(0.114) 3.310(0.130) Package Sensor Location 0.380(0.015) 0.550(0.022) 1.600(0.063) TYP 14.000(0.551) 15.500(0.610) 0.360(0.014) 0.480(0.019) 1.270(0.050) TYP AH920 Document number: DS36768 Rev. 2 - 2 11 of 13 www.diodes.com 0.360(0.014) 0.510(0.020) December 2013 © Diodes Incorporated A Product Line of Diodes Incorporated AH920 Package Outline Dimensions (All dimensions in mm(inch). Cont.) (2) Package Type: SOT-23-3 2. 820(0. 111) 3. 100(0. 122) 0. 100(0. 004) 0. 200(0. 008) 0.300(0.012) 0.600(0.024) 1.500(0.059) 1.700(0.067) 2.650(0.104) 3.000(0.118) 1. 230(0.048) 1. 530(0.060) Package Sensor Location 0. 200(0. 008) 0. 770(0. 030) 1. 070(0. 042) 1. 800(0. 071) 2. 000(0. 079) 0 8 0. 300(0. 012) 0. 500(0. 020) 1.450(0.057) MAX. 0. 950(0. 037) TYP 0. 000(0. 000) 0. 150(0. 006) 0. 900(0. 035) 1. 300(0. 051) AH920 Document number: DS36768 Rev. 2 - 2 12 of 13 www.diodes.com December 2013 © Diodes Incorporated A Product Line of Diodes Incorporated AH920 IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 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LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2013, Diodes Incorporated www.diodes.com AH920 Document number: DS36768 Rev. 2 - 2 13 of 13 www.diodes.com December 2013 © Diodes Incorporated