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| Hall Device LT135A LT135A s Features Small temperature coefficient of the Hall voltage Good linearity of the Hall voltage Small imbalanced voltage Directly DC voltage applicable s Applications Brushless motors VCR, CD, CD-ROM, FDD Measuring equipment Gauss meters, magnetic substance detectors Noncontact sensors Microswitches, tape-end detection Other magnetic detection Hall Voltage 240mV GaAs Hall Device s Outline Dimensions 2.70.3 0.4 0.6 (Unit : mm) 1 4 2.90.2 1.9 (0.85) N 2 0.4 3 0.4 (0.95) 4-R0.2 0.6 1.50.2 0.6 0.3 (Ta=25C) Unit V mA mW C C C Parameter Control voltage Control current Power dissipation Operating temperature Storage temperature Soldering temperature*1 *1 Soldering time : 10 seconds Symbol Rating VC 12 IC 15 150 PD -20 to +125 Topr -55 to +150 Tstg 260 Tsol As for dimensions of tape-packaged products, refer to page 44 . s Electrical Characteristics Parameter No-load Hall voltage *1 Imbalanced voltage *2 Input resistance Output resistance Drift of imbalanced voltage vs. temperature Temperature coefficient of Hall voltage Temperature coefficient of input resistance Linearity of Hall voltage Symbol VH VHO RIN ROUT |VHO| Conditions VC=6V, B=100mT VC=6V, B=0mT IM=1mA, B=0mT IM=1mA, B=0mT VC=6V, B=0mT, Ta=-20C to 25C VC=6V, B=0mT, Ta=25C to 125C IC=6mA, B=100mT, T1=-20C, T2=125C IM=1mA, B=0mT, T1=-20C, T2=125C IC=6mA, B1=50mT, B2=100mT MIN 200 -15 650 1 300 TYP. 240 800 1 600 5 -0.03 0.2 2 MAX. 280 15 950 1 900 - (0to0.15) 0.8 s Absolute Maximum Ratings Terminal connection 1:VC Input 2:VH Output 3:VC Input 4:VH Output 0.16+0.10 -0.06 1.1 +0.2 -0.1 (Ta=25C) Unit mV mV mV %/C %/C % *1 No-load Hall voltage is nearly proportional to Vc (within the range of 1 to 6V) at temperatures of -20C to + 125C. Keep the voltage within the allowable power dissipation range. *2 Imbalanced ratio is in +/-12% within the range of Vc=1 to 6V. VH=VM-VHO 1 {VH(T2)-VH(T1)} = X100 X VH(T1) (T2-T1) {RIN(T2)-RIN(T1)} 1 X X100 = (T2-T1) RIN(T1) {KH(B2)-KH(B1)} VH X2X100, KH= = (ICXB) {KH(B1)+KH(B2)} VM:Observed Hall voltage VHO:Imbalanced voltage KH:Sensitivity In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP devices shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest device spcification sheets before using any SHARP device. 2.90.2 Hall Device Fig. 1 Hall Voltage vs. Ambient Temperature B=100mT 300 250 200 150 100 50 0 -20 0 40 80 Ambient temperature Ta (C) 120 IC=6mA VC=6V LT135A Fig. 2 2 000 1 600 1 200 800 400 Input Resistance vs. Ambient Temperature B=0mT IM=1mA Input resistance RIN () Hall voltage VH (mV) 0 -20 0 40 80 120 Ambient temperature Ta (C) Fig. 3 1 600 1 400 Hall voltage VH (mV) Hall Voltage vs. Magnetic Flux Density VC=6V Ta=25C Fig. 4 600 400 300 200 100 Hall Voltage vs. Control Current B=100mT Ta=25C 1 200 1 000 800 600 400 200 0 0 100 200 300 400 500 600 Magnetic flux density B (mT) Hall voltage VH (mV) 0 0 4 8 12 Control current IC (mA) Fig. 5 Hall Voltage vs. Control Voltage B=100mT Ta=25C Fig. 6 200 Power dissipation PD (mW) 160 120 80 40 Power Dissipation vs. Ambient Temperature 600 Hall voltage VH (mV) 500 400 300 200 100 0 0 2 4 6 8 10 12 Control voltage VC (V) 0 0 40 80 120 160 Ambient temperature Ta (C) 200 |
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