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| AH342 Active High/Low Complementary Output Hall-effect Latch Features - Digital dual complementary sink/source outputs - Reverse Voltage Polarity protection for full supply range. - High output current capability - Low profile 4 pin SIP package General Description The AH342 is a bipolar latching hall IC with a pair of complementary push/pull outputs. A dual hall element is used to offset stress induced noise and drift. The robust outputs are capable of sourcing up to 7.4mA and sinking up to 4.4mA. The device contains inherent reverse polarity protection up to the full power supply range. Applications Conveyors Motor control Power sensing Linear or rotary motion detection RPM sensing Pin Assignment Front View 1 : Vcc 2 : DO 3 : DOB 12 3 4 4 : Vss Pin Descriptions Name Vcc DO DOB Vss P/I/O P O O P Pin # 1 2 3 4 Description Positive Supply Output Pin Output Pin Ground Power 342 Ordering Information AH342 X - X X Wafer Body Blank Package P: SIP-4L Lead L : Lead Free *Packing: Bulk This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev.1.1 Sep 30, 2005 1/5 AH342 Active High/Low Complementary Output Hall-effect Latch Block Diagram OUTPUT AMP 7.5V 660 SOURCE IO 510 SINK Voltage Regulator Output Amp #1 Interface Circuit Output Amp #2 IO2 IO1 Hall Sensor Amp and Trigger Absolute Maximum Ratings (Note 1) Characteristics Supply voltage Voltage Externally Applied to Output Output Current Magnetic Flux density Operation Temperature Storage Temperature Sym. VCC VOUT Ic B TOPR TSTG o Conditions -40 C to 125 C o o -40 C to 125 C No limit; the circuit cannot be damaged by magnetic overdrive No power applied o Values 28 -1.2 to 5 10 Unlimited -40 to 125 -40 to 150 Unit V V mA C C Note 1: Absolute maximum ratings are the extreme limits that the device will withstand without damage to the device. However, the electrical and magnetic characteristics are not guaranteed as the maximum limits (above recommended operating conditions) are approached nor will the device necessarily operate at absolute maximum rating. Anachip Corp. www.anachip.com.tw 2/5 Rev.1.1 Sep 30, 2005 AH342 Active High/Low Complementary Output Hall-effect Latch Electrical Characteristics (Note 2, 3) Characteristic Sym. Supply Voltage VCC Supply Current ICC Output Voltage #1 Sourcing #2 Sinking VOUT #1 Sinking #2 Sourcing Leakage (sink) ILeak(sink) Output Current #1 Sourcing #2 Sinking IOUT #1 Sinking #2 Sourcing Output Switching Time Fall Time Rise Time tf tr 90% to 10%; no load 28V0.5% Supply 10% to 90%; no load 28V0.5% Supply 1.0 s 1.0 Apply 2V to output and measure current. Switch magnetically operated, no load 28V0.5%. Apply 2V to output and measure current. Switch magnetically released, no load 28V0.5%. 5.5 2.8 2.8 5.5 7.4 3.4 3.4 7.4 8.0 4.7 4.7 8.0 5.0 2.4 2.4 5.0 7.4 3.4 3.4 7.4 8.5 5.0 mA 5.0 8.5 Conditions 28V0.5% supply Switch magnetically operated: No load 28V0.5% supply. Switch magnetically released: No load 28V0.5% supply. Apply voltage 0.2V greater than measured output source voltage measure current, no load 28V0.5% supply. 24oC 2oC Min Typ. Max 4.5 4 6.0 0 0 6.0 4.5 7.0 0.1 0.1 7.0 28 6 7.5 0.2 0.2 7.5 1.0 -40oC to 125 oC Units Min Typ. Max 4.5 3 4.5 28 7 1.0 V mA V A Magnetic Characteristics( Ta=+25C) (Note 2, 3) Characteristic Operate Point Release Point Hysteresis Sym. Bop Brp Bhy 24oC 2oC Vs=12Vdc 0.5%Vdc Min. Max. 40 120 -120 -40 120 200 o (1mT = 10 Gauss) -40 oC to 125 oC Vs=4.5Vdc to 28Vdc Unit Min. Max. 30 150 Gauss -150 -30 Gauss 120 200 Gauss o o Note 2: All the parameters are tested under the 25 C only. The operation temperature (-40 C to 125 C) is guaranteed by design, it is typical value. Note 3: The magnetic field strength (gauss) required to cause the switch to change state (operate and release) will be as specified in the magnetic characteristics. To test the switch against the specified magnetic characteristics the switch must be placed in a uniform magnetic field. Anachip Corp. www.anachip.com.tw 3/5 Rev.1.1 Sep 30, 2005 AH342 Active High/Low Complementary Output Hall-effect Latch DO ( Output Voltage ) ( Output Voltage ) DOB Vcc ( off-state ) ( off-state ) Vcc Turn off Bhy Turn on Turn on Bhy Turn oFF ( on-state ) ( on-state ) Vsat Vsat S N Brp 0 Bop S ( Magnetic flux density B ) N Brp 0 Bop ( Magnetic flux density B ) Performance Characteristics (SIP4) Ta (C) Pd (mW) Ta (C) Pd (mW) P d (m W ) 600 500 400 300 200 100 0 0 25 50 75 100 125 150 T a ( C ) 25 550 105 198 50 440 110 176 60 396 115 154 70 352 120 132 80 308 125 110 85 286 130 88 90 264 135 66 95 242 140 44 100 220 150 0 P o w e r D is s ip a tio n C u rve NoteSIP-4L package. Operating Characteristics DO ( Output Voltage ) S Marking side Vcc High Vd Bhy Low N ( SIP4 ) N Vsat Brp 0 Bop S ( Magnetic flux density ) Anachip Corp. www.anachip.com.tw 4/5 Rev.1.1 Sep 30, 2005 AH342 Active High/Low Complementary Output Hall-effect Latch Marking Information ( Top View ) Part Number 342 X XX A x Wafer Lot ID: a~z is lead-free products Nth week: 01~52 Year: "1" = 2001 "2" = 2002 ~ Package Information Active Area Depth Marking side Package Sensor Location 1.9714mm + 0.1mm 1.0460mm + 0.1mm 0.7mm 1 2 3 4 Package Dimension 5 -7 1.55mm +/-0.1mm 1.03mm +/-0.1 0.30mm +/-0.1mm 3 -5 o o o o 14.25mm +/-1.25mm 0.38mm +/-0.03mm 3.65mm +/-0.1mm 0.46mm +/-0.03mm 0.41mm +/-0.03mm 3.81mm +/-0.03mm 5.22mm +/-0.1mm 4.20mm +/-0.1mm 5 -7 o o 3 -5 o o 342 0.2mm Max. 1.42mm+/-0.1mm 1.27mm +/-0.03mm Anachip Corp. www.anachip.com.tw 5/5 Rev.1.1 Sep 30, 2005 |
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