AH174 Inverted Output Hall Effect Latch For High Temperature Features General Description - 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: −40°C ~ +125°C - Package: SIP3, SOT23 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 Descriptions Pin Assignment Name (Top view) 3. OUT 2. GND 1. VCC Description VCC Input power GND Ground OUT Inverted output stage (SIP3 package) 3. OUT GND 2. 1. VCC ( SOT23 package) Ordering Information AH174 X - X X X - X Wafer Body Package Lead Packing Blank or A~Z : if necessary to specify P: SIP3 W: SOT23 L : Lead Free Blank: Normal 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 OUT 2 GND AMP Application Circuit IA IB M Digital Hall Effect Sensor IC Driver M: Three Phase Hall Motor Ia Ib Ic & Control Logic HA RPM sensing HB HC Hall Motor Driver Three Phase Hall Motor Anachip Corp. www.anachip.com.tw Rev 0.7 May 7, 2004 2/6 AH174 Inverted Output Hall Effect Latch For High Temperature Absolute Maximum Ratings ( at Ta= 25°C ) Characteristics Supply voltage Output “off ” voltage Output “on” current Operating Temperature range Storage Temperature range SIP Power Dissipation Parameter Supply voltage Output saturation voltage Supply current Rating Unit VCC 20 V Vout (off) Io (sink) Topt Tstg 20 V 25 mA -40~+125 °C -65~+150 °C 550 mW 230 mW PD SOT23 Electrical Characteristics Symbol ( Ta= 25°C ) Symbol Conditions Min. Typ. Max. Unit Vcc — 3.5 - 20 V - 300 400 mV - 3.5 6 mA Vout(sat) Icc VCC=12V, OUT ”ON” Io =10mA VCC=12V, OUT ”OFF” Magnetic Characteristics (Ta= 25°C ) (1mT = 10 Gauss) A grade Parameter Symbol Min. Typ. Max. Unit Operate Point Bop 15 - 60 Gauss Release Point Brp -60 - -15 Gauss Hysteresis Bhy - 80 - Gauss Symbol Min. Typ. Max. Unit Operate Point Bop 5 - 80 Gauss Release Point Brp -80 - -5 Gauss Hysteresis Bhy - 80 - Gauss B grade Parameter Anachip Corp. www.anachip.com.tw Rev 0.7 May 7, 2004 3/6 AH174 Inverted Output Hall Effect Latch For High Temperature Operating Characteristics S S Marking side Marking side N N ( SOT23 ) ( Output Voltage ) OUT Vcc Bhy Vsat Brp ( SIP3 ) 0 Bop ( Magnetic flux density ) Marking Information (1) SOT23 (Top View) XX YM X (2) SIP3 (Top View) ID code A~Z: Non-Lead Free a~z : Lead Free 174 YWW X J4 : AH174 Date code Y : Year M : Month (A~L) ID code A~Z: Non-Lead Free a~z : Lead Free Date code Y : Year WW : Nth week Anachip Corp. www.anachip.com.tw Rev 0.7 May 7, 2004 4/6 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 Sensor Location Active Area Depth Package Dimension 45º 0.38mm 0.7mm 1.57mm 1.47mm 0.41mm 0.41mm 3 1.27mm 4.17mm 4.04mm 2 1 45º 3.10mm 2.97mm Anachip Corp. www.anachip.com.tw 1.82 mm 15.50mm 13.00mm Rev 0.7 May 7, 2004 5/6 AH174 Inverted Output Hall Effect Latch For High Temperature (2) Package Type: SOT23-3L D 2 HE E ( Sensing point ) 0.8mm 1 3 SEE VIEW C 1.45mm e1 e θ 1(4x) 3X GAUGE PLANE A A2 0.10 C L θ 2(4x) VIEW C b(3x) Symbol A A1 A2 b C D E HE L L1 e e1 θ θ1 θ2 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 Anachip Corp. www.anachip.com.tw θ L1 A1 SEATING PLANE 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 Rev 0.7 May 7, 2004 6/6