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| AH174 Inverted Output Hall Effect Latch For High Temperature Features - Bipolar Hall effect latch sensor - 3.5V to 20V DC operation voltage - Open collector pre-driver - 25mA output sink current - Chip power reverse-connection protection - Operating temperature: -40C ~ +125C - Package: SIP3, SOT23 General Description AH174 is a single-digital-output Hall-effect sensor for high temperature operation. The device includes an on-chip Hall voltage generator for magnetic sensing, an amplifier to amplify Hall voltage, and a comparator to provide switching hysteresis for noise rejection, and an open-collector output pre-driver. An internal bandgap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range. While the magnetic flux density (B) is larger than threshold Bop, the OUT pin turns off (High). If B removed toward Brp, the OUT pin is latched "off" state prior to B < Brp. When B < Brp, the OUT pin go into " on " state. Applications - Rotor position sensing - Current switch - Encoder - RPM detection Pin Assignment (Top view) 3. OUT 2. GND 1. VCC (SIP3 package) Pin Descriptions Name Description VCC GND OUT Input power Ground Inverted output stage 3. OUT GND 2. 1. VCC ( SOT23 package) Ordering Information AH174 X - X X X - X Wafer Body Blank or A~Z : if necessary to specify Package P: SIP3 W: SOT23 Lead L : Lead Free Blank: Normal Packing Blank : Tube A : Taping Magnetic Characteristics A or B 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. 0.7 May 7, 2004 1/6 AH174 Inverted Output Hall Effect Latch For High Temperature Block Diagram VCC 1 REG. 3 AMP OUT 2 GND Application Circuit IA IB M Digital Hall Effect Sensor M: Three Phase Hall Motor Driver & Control Logic IC Ia Ib Ic RPM sensing HA HB HC Hall Motor Driver Three Phase Hall Motor Anachip Corp. www.anachip.com.tw 2/6 Rev 0.7 May 7, 2004 AH174 Inverted Output Hall Effect Latch For High Temperature Absolute Maximum Ratings Characteristics ( at Ta= 25C ) Symbol Rating Unit Supply voltage Output "off " voltage Output "on" current Operating Temperature range Storage Temperature range Power Dissipation SIP SOT23 VCC 20 20 25 -40~+125 -65~+150 550 230 V V mA C C Vout (off) Io (sink) Topt Tstg PD mW mW Electrical Characteristics Parameter Symbol ( Ta= 25C ) Conditions Min. Typ. Max. Unit Supply voltage Output saturation voltage Supply current Vcc Vout(sat) Icc Io =10mA -- VCC=12V, OUT "ON" VCC=12V, OUT "OFF" 3.5 - 300 3.5 20 400 6 V mV mA Magnetic Characteristics (Ta= 25C ) (1mT = 10 Gauss) A grade Parameter Symbol Min. Typ. Max. Unit Operate Point Release Point Hysteresis B grade Parameter Bop Brp Bhy 15 -60 - 80 60 -15 - Gauss Gauss Gauss Symbol Min. Typ. Max. Unit Operate Point Release Point Hysteresis Bop Brp Bhy 5 -80 - 80 80 -5 - Gauss Gauss Gauss Anachip Corp. www.anachip.com.tw 3/6 Rev 0.7 May 7, 2004 AH174 Inverted Output Hall Effect Latch For High Temperature Operating Characteristics OUT S S Marking side ( Output Voltage ) Vcc Bhy Marking side N ( SOT23 ) N ( SIP3 ) Vsat Brp 0 Bop ( Magnetic flux density ) Marking Information (1) SOT23 (Top View) ID code A~Z: Non-Lead Free a~z : Lead Free J4 : AH174 Date code Y : Year M : Month (A~L) (2) SIP3 (Top View) 174 YWW X ID code A~Z: Non-Lead Free a~z : Lead Free Date code Y : Year WW : Nth week XX YM X Anachip Corp. www.anachip.com.tw 4/6 Rev 0.7 May 7, 2004 AH174 Inverted Output Hall Effect Latch For High Temperature Package Information (1) Package Type: SIP-3L 0.51mm NOM 2.10mm 1.55mm BRANDED SURFACE 1 2 3 Active Area Depth Sensor Location Package Dimension 45 0.38mm 0.7mm 1.57mm 1.47mm 0.41mm 0.41mm 3 4.17mm 4.04mm 1.27mm 2 1 1.82 mm 45 3.10mm 2.97mm 15.50mm 13.00mm Anachip Corp. www.anachip.com.tw 5/6 Rev 0.7 May 7, 2004 AH174 Inverted Output Hall Effect Latch For High Temperature (2) Package Type: SOT23-3L D 2 ( Sensing point ) E 0.8mm HE 1 1.45mm 3 e1 e 1(4x) 0.10 C 3X SEATING PLANE 2(4x) b(3x) SEE VIEW C A2 GAUGE PLANE L A A1 L1 VIEW C Symbol Dimensions In Millimeters Min. 1.05 0.05 1.00 0.25 0.08 2.70 1.50 2.60 0.30 0.50 1.80 0.85 0o 3o 6o Nom. 1.10 2.90 1.60 2.80 0.60 1.90 0.95 5o 5o 8o Max. 1.35 0.15 1.20 0.50 0.20 3.00 1.70 3.00 0.55 0.70 2.00 1.05 10o 7o 10o Dimensions In Inches Min. 0.041 0.002 0.039 0.010 0.003 0.106 0.059 0.102 0.012 0.020 0.071 0.033 0o 3o 6o Nom. 0.043 0.114 0.063 0.110 0.024 0.075 0.037 5o 5o 8o Max. 0.053 0.006 0.047 0.020 0.008 0.118 0.067 0.118 0.022 0.028 0.079 0.041 10o 7o 10o A A1 A2 b C D E HE L L1 e e1 1 2 Anachip Corp. www.anachip.com.tw 6/6 Rev 0.7 May 7, 2004 |
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