PRELIMINARY DATA SHEET HAL400, HAL401 Linear Hall Effect Sensor ICs # MICRONAS Edition June 29, 1998 6251-346-4PD INTERMETALLHAL400, HAL401 PRELIMINARY DATA SHEET Linear Hall Effect Sensor ICs in CMOS technology Release Notes: Revision bars indicate significant changes to the previous edition. Introduction The HAL 400 and HAL401 are Linear Hall Effect Sen- sors produced in CMOS technology. The sensors in- clude a temperature-compensated Hall plate with chop- pered offset compensation, two linear output stages, and protection devices (see Fig. 2). The output voltage is proportional to the magnetic flux density through the hall plate. The choppered offset compensation leads to stable magnetic characteristics over supply valtage and temperature. The HAL400 and HAL401 can be used for magnetic field measurements, current measurements, and detec- tion of any mechanical movement. Very accurate angle measurements or distance measurements can also be done. The sensor is very robust and can be used in elec- trical and mechanical hostile environments. The HAL 400 operates linear in the magnetic field range from 75 mT up te 75 mT. The HAL 401 operates linear in the magnetic field range from 50 mT up te 50 mT. The sensor is designed for industrial and automotive ap- plications and operates in the ambient temperature range from 40 C up to 150 C. The HAL 400 and HAL 401 sensors are available in the SMD-package SOT-89A. Features: switching offset compensation at 147 kHz low magnetic offset extremely sensitive operates from 4.8 to 12 V supply voltage wide temperature range Ta = 40 C to +150 C overvoltage protection reverse voltage protection of Vpp-pin differential output accurate absolute measurements of DC and low fre- quency magnetic fields on-chip temperature compensation low 1/f-noise Marking Code HAL 40080 HAL 40180 401A 401E 401C Operating Junction Temperature Range (T,) A: T, = 40 C to +170 C E: Ty = 40 C to +100 C C: Ty =0C to +100 C The relationship between ambient temperature (Ta) and junction temperature (TJ) is explained on page 15. Hall Sensor Package Codes HAL XXXPA-T Temperature Range: A, E, or CG Package: SO for SOT-89A Type: 400, 401 Example: HAL401S0-E Type: 401 Package: SOT-89A Temperature Range: Ty = 40 C to +100 C Hall sensors are available in a wide variety of packaging versions and quantities. For more detailed information, please refer to the brochure: Ordering Codes for Hall Sensors. Solderability Package SOT-89A: according to IEC68-2-58 Fig. 1: Pin configuration MICRONAS INTERMETALLPRELIMINARY DATA SHEET HAL400, HAL401 Functional Description GND 4 Chopper |_| Oscillator Temp. Offset ji _ Dependent L-4 Compensation; [7] eaitcring Bias Hallplate [| Protection Device Loy Yoo PL oun oura|_ 1 2 __ 3 Fig. 2: Block diagram of the HAL 400 (top view) The Linear Hall Sensor measures constant and low fre- quency magnetic flux densities accurately. The ditferen- tial output voltage Voutpie (difference of the voltages on pin 2 and pin 3) is proportional to the magnetic flux densi- ty passing vertically through the sensitive area of the chip. The commen mode voltage Voy (average of the voltages on pin 2 and pin 3) of the differential output am- plifier is a constant 2.2 V. The differential output voltage consists of two compo- nents due to the switching offset compensation tech- nique. The average of the differential output voltage rep- resents the magnetic flux density. This component is overlaid by a ditferential AC signal ata typical frequency of 147 kHz. The AC signal represents the internal offset voltages of amplitiers and hall plates that are influenced by mechanical stress and temperature cycling. Note: The numbers do not le represent pin numbers. 1 a) Otfset Voltage Fig. 3: Hall Offset Compensation b) Switched Current Supply External filtering or integrating measurement can be done to eliminate the AC component of the signal. Re- sultingly, the influence of mechanical stress and temper- ature cycling is suppressed. No adjustment of magnetic offset is needed. The sensitivity is stabilized over a wide range of temper- ature and supply voltage due to internal voltage regula- tion and circuits tor temperature compensation. Offset Compensation (see Fig. 3) The Hall Offset Voltage is the residual voltage measured in absence of a magnetic field (zero-field residual volt- age). This voltage is caused by mechanical stress and can be modeled by a displacement of the connections for voltage measurement and/or current supply. Compensation of this kind of offset is done by cyclic commutating the connections for current flow and volt- age measurement. First cycle: The hall supply current flows between points 4 and 2. In the absence of a magnetic field, V3 is the Hall OH- set Voltage (+ Vo). In case of a magnetic field, V1 is the sum of the Hall voltage (Vy) and Vogs. Vis =Vut Votts Second cycle: The hall supply current flows between points 1 and 3. In the absence of a magnetic field, Vo4 is the Hall OT- set Voltage with negative polarity (-Vogs). In case of a magnetic field, V2,4 is the difference of the Hall volt- age (Vy) and Vorts- Voa = Vu Votts In the first cycle, the output shows the sum of the Hall voltage and the offset; in the second, the ditference of both. The difference of the mean values of Voy71 and Voutz2 (VoutpiF) is equivalent to Vuai- Vv A for B=>OmT Vout Von VoutbiF2 VouTDIF Vourbir2 , Voutac tifoy = 6.7 ps | Youre ke ._$ i - c) Output Voltage MICRONAS INTERMETALLHAL400, HAL401 PRELIMINARY DATA SHEET Outline Dimensions Dimensions of Sensitive Area 0.37 mm x 0.17 mm ag 4.55+0.1__! at 1.7 m a 4 | | . | sensitive area Position of Sensitive Area a cco top view + a x=0+40.2 mm seat | Foe y =0.98mm+02 mm 1.53+0.05 | ] x is referenced to the center of the package 0.0640.04 SPGS7001-5-A4ME Fig. 4: Plastic Small Outline Transistor Package (SOT-89A) Weight approximately 0.04 g Dimensions in mm Absolute Maximum Ratings Supply Voltage -Ipp Reverse Supply Current 1 - 501) mA lppz Supply Current through 1 3002) 3002) mA Protection Device Vo Output Voltage 2,3 -0.3 12 Vv lo Continuous Output Current 2,3 5 5 mA lomax Peak Output Current 2,3 - 50?) mA loz Output Current through 2,3 2002) 2002) mA Protection Device Ts Storage Temperature Range -65 150 C Ty Junction Temperature Range 40 150 C 40 1703) C 1) as long as Tymax is not exceeded 2)t<s2ms 3)+<1000h Stresses beyond those listed in the Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only. Functional operation of the device at these or any other conditions beyond those indicated in the Recommended Operating Conditions/Characteristics of this specification is not implied. Exposure to absolute maxi- mum ratings conditions tor extended periods may affect device reliability. 4 MICRONAS INTERMETALLPRELIMINARY DATA SHEET HAL400, HAL401 Recommended Operating Conditions lo Continuous Cutput Current 2,3 2.25 2.25 mA Ty = 25C lo Continuous Gutput Current 2,3 -1 1 mA Ty = 170 C CL Load Capacitance 2,3 - 1 nF B Magnetic Field Range -75 75 mT for HAL400 B Magnetic Field Range -50 50 mT for HAL401 Vop f power dissipation limit . for specified sensitivity 40C 25C 125C 150C Ta Fig. 5: Recommended Operating Supply Voltage MICRONAS INTERMETALLHAL400, HAL401 PRELIMINARY DATA SHEET Electrical and Magnetic Characteristics at Recommended Operation Conditions (Fig. 5 tor Ta and Vpp) as not otherwise specified in the column Conditions. Typical characteristics: Ty = 25 C, Vop = 6.8 V and -75 mT <B< 75 mT tor HAL400 Ty = 25 C, Vop = 6.8 V and -50 mT < B < 50 mT for HAL401 Ipp Supply Current 1 11 14.5 17.1 mA Ty = 25 C, louti2 = 9 mA lbp Supply Current over 1 9 14.5 18.5 mA louT12=0mA Temperature Range Vom Common Mode Output Voltage 2,3 2.1 22 2.3 Vv louT12= 9 mA, Vom = (Vouti + Voutz2)/2 CMRR Common Mode Rejection Ratio 2,3 -2 0 2 mviV louti2= 0 mA, CMRR is limited by the influ- ence of power dissipation. SB Differential Magnetic Sensitivity 2-3 37 42.5 50 mV/mT for HAL400: Sp = AVoutTpIF/AB -60 mT < B< 60 mT, Voutoir = Vout Yout2 Ty = 25C Sp Differential Magnetic Sensitivity 2-3 37 42.5 50 mV/mT for HAL401: -50 mT <B<50 mT, Ty = 25C Sp Differential Magnetic Sensitivity 2-3 33 42.5 50 m/mT for HAL400: over Temperature Range -60 mT < B< 60 mT 3p Differential Magnetic Sensitivity 2-3 33 42.5 50 mmT for HAL401: over Temperature Range -50 mT < B< 50 mT Boffset Magnetic Offset 2-3 -1.0 0.2 1.0 mT for HAL400: B=OmT, lout12=9 mA, Ty = 25 C Boffset Magnetic Offset 2-3 -1.25 0.2 1.25 mT for HAL400: over Temperature B=OnmT, louti2=9mA Boffset Magnetic Offset 2-3 -1.5 0.2 1.5 mT for HAL401: over Temperature B=OmT, lout12=0mA ABorrset/ Magnetic Offset Change -15 0 15 ui/K for HAL400: AT B =On1T, louTi2 = 9 mA ABorrset Magnetic Offset Change -25 0 25 ui/K for HAL401: AT B =On1T, loutT1,2 =9mA BW Bandwidth (-3 dB) 2-3 - 10 - kHz without external Filter!) NLgit Non-Linearity 2-3 - 0.5 1.5 % for HAL400: of Differential Output -60 mT < B< 60 mT NLgit Non-Linearity 2-3 - 0.5 2 % for HAL401: of Differential Output -50 mT < B< 50 mT NLgingle Non-Linearity 2,3 - 2 - % of Single Ended Output fey Chopper Frequency 2,3 110 147 170 kHz Ty = 25C feH Chopper Frequency over Temp. 2,3 80 147 180 kHz VouTacpp Peak-to-Peak 2,3 - 0.6 0.8 V for HAL400 AC Output Voltage VouTAcpp Peak-to-Peak 2,3 - 0.6 1.3 Vv for HAL401 AC Output Voltage Ome Magnetic RMS Differential 2-3 - 10 - aT BW = 10 Hz to 10 KHz Broadband Noise MICRONAS INTERMETALLPRELIMINARY DATA SHEET HAL400, HAL401 _ symbol Max tions feflicker Comer Frequency 2-3 - 10 - Hz B=0OmT of 1/f Noise fcflicker Comer Frequency 2-3 - 100 - Hz B=65 mT of 1/f Noise Rout Output Impedance 2,3 - 30 50 oO lout12 = 2.5mA, Ty =25 , Vpp =68V Rout Output Impedance 2,3 - 30 150 Q loutiz = 25mA over Temperature FithsB Thernal Resistance Junction to - 150 200 KAW Fiberglass Substrate case Substrate Backside 30 mm x 10 mmx 1.5mm pad size see Fig. 29 1) with external 2 pole filter (fagy = 5 KHz), Voutac is reduced to less than 1 mV by limiting the bandwith MICRONAS INTERMETALL tHAL400, HAL401 PRELIMINARY DATA SHEET Ta = 25C Vpp = 6.8V vous 4 \ [ \Woor / Voutz 3 N | A VY /\\ | he *+ B Fig. 6: Typical output voltages versus magnetic flux density QO -150 -100 -50 0 50 100 6150 mT Vv 0.05 T B=0mT 0.04 Ta = 40 C VOFFS 0.03 The 9500 0.02 Tas 12 C wench Ta = 150 C 0.01 0.00 ne incenoshannt sntanstna lt 0.01 spe eg 0.02 -0.03 0.04 0.05 2 4 6 8 10 12 #144 Vop Fig. 8: Typical differential output offset voltage versus supply voltage mT 2.0 I B=OmT 1.5 l t,=40C Borrs 1! ashe es ooo A = 1.0 { \ Le = 125C | 05 won edennee Ta = 150 C 0.0 <= " per ee ee 0.5 fi i -1.0 4: -1.5 2 2 4 6 8 1 12 14V * Yop Fig. 7: Typical magnetic oftset of ditterential output versus supply voltage mT 2.0 | I B=0OmT ' | Borrs Vop = 4.8 vi 1.0 sheen Vp = 6.0 vi a te VOp= 12 V 0.5 0.0 ER = Se _+ SET ee dee | [a ne r 4 | tel os nin, 2 0-25 0 25 50 75 100 125 150C . Ty, Fig. 9: Typical magnetic offset of differential output versus ambient temperature MICRONAS INTERMETALLPRELIMINARY DATA SHEET HAL400, HAL401 mv/mT 50 | B= +450 mT PTSD TEES PEED DeEAY Mana Mek Se 8 ee B40 it fs f i E 30 f li f 20 eee Ta = 40 C | | 40 nanthasnnnns Ta = 2 c t a= 125C | where Ta = 150 C | 2 4 6 8 10 12 14V Vpp Fig. 10: Typical differential magnetic sensitivity versus supply voltage m/mT 50 | I B =+50 mT 45 ae eo Rey SB ae ar 40 rae = 35 ~~ P| 30 25 20 15 Vop =4.8V | | 10 cae Vpp = 6.0 V I | oe Vpn = 12 V 5 Dp 0 -50 -25 0 25 50 75 100 125 150C Ta Fig. 12: Typical differential magnetic sensitivity versus ambient temperature % 1.5 Ta = 25C 1.0 NL git 0.5 0.0 |_ ee Ts of Pheer 0.5 Vpp = 4.8 V | | | wool. Von = 6.0 V -1.0 Dp t 44+ " =12V 5 -80 -60 -40 -20 0 20 40 60 80 mT * B Fig. 11: Typical non-linearity of differential output versus magnetic flux density % 15 Vpp = 6.8V 1.0 NLoit 05 0.0 ar a ea epee _ 0.5 Ta =40 C | | wed Ta = 25C -1.0 4 pL Tn = 125C | | Spe aa re "4 = " 5 -80 0 -40 -20 0 20 40 60 80 mT * B Fig. 13: Typical non-linearity of differential output versus magnetic flux density MICRONAS INTERMETALLHAL400, HAL401 PRELIMINARY DATA SHEET % 3 a Ta = 25C 2 \ NLeingle \ \ TX X XX 0 NS al -1 Vop = 8 Vv amt Vp = 127 -2 -3 80 -60 +40 -20 0 20 40 60 80 mT *+ B Fig. 14: Typical single-ended non-linearity versus magnetic flux density % 8 r Vpp = 6.0 V oN NLeingle \ A iN A XN 0 Be = - Ta = 40C | | awl Ta = 25 C 2 | | LoTa= 125C ws fees Tra = 150 C 3 -80 -60 40 -20 0 20 40 60 80 mT _* B68 Fig. 16: Typical non-linearity of single- ended output versus magnetic flux density kHz 200 180 fcH 160 140 120 100 80 60 40 20 2 4 6 8 10 #12 %14V * Yop Fig. 15: Typical chopper frequency versus supply voltage kHz 200 180 fcH 160 140 oA] | ae | Pens 120 100 80 60 Vpop=4.8V | | | 40 sais Yop =6.0V | pe Vp =12V 20 DD 0 0-25 0 25 50 75 100 125 150C . Ty, Fig. 17: Typical chopper frequency versus ambient temperature 10 MICRONAS INTERMETALLPRELIMINARY DATA SHEET HAL400, HAL401 22 Vem 1.8 1.6 | | tee 1, = 40 1.4 fF t i cordon Ta = 25 C | | wont ww Ta = 150 C 12 2 4 6 8 10 12 14V Vop Fig. 18: Typical common mode output voltage versus supply voltage 2.25 2.24 Vem 2.23 2.22 2.21 |, na mie en ba \ \ 2.20 m1 \ 2.19 Vpp=12V 4 2.18 2.17 2.16 2.15 -50 -25 0 25 50 75 100 125 150C Ta Fig. 20: Typical common mode output voltage versus ambient temperature mV 1000 I Ta = 25C VOUT ipp, OUT2 PP 300 600 400 200 2 4 6 8 10 12 14V * Vop Fig. 19: Typical output AC voltage versus supply voltage mV 1000 VouTipp, VoUT2pp B00 Vpp = 4.8 V | | snsednne Von = 6 V a S| Vp = 12 VV 600 oo hirarh,. NY ne A 400 7 Noy " fasts Ly 200 Q -50 -25 0 25 50 75 100 125 150C Ta Fig. 21: Typical output AC voltage versus ambient temperature MICRONAS INTERMETALL 11HAL400, HAL401 PRELIMINARY DATA SHEET mA 25 | louTi2=9 mA 20 ee IDD 45 F } i j j | | tacky Y | t,--40e | | -10 / =a TA = 28 CF 45 L Ta= 125C I I 4 wen dewoes Ta = 150 C -15 -10 -5 0 5 10 15Vv Vop Fig. 22: Typical supply current versus supply voltage mA 20 | louT1,2=9 mA Ibb Toe eee oe TA = 40 ae awewelewon TA = 25C ina s TA = 125C | once whee we, - 150 C 6 tay 5 Vop Fig. 24: Typical supply current versus supply voltage mA 20 | B=QmT lbp 15 jaa [ry IS, Pl | 10 f 5 Vpp=4.8V oor. eRe Vpp = 6.0 V | poy 12V Q -50 -25 0 25 50 75 100 125 150C Ta Fig. 23: Typical supply current versus temperature mA 25 B=0OmT IDD 20 yl 15 Se ron, at Pay nee oe 10 Vop= re Vv Vop=12V 5 0 6 + 2 0 2 4 6 mA * loutt,2 Fig. 25: Typical supply current versus output current 12 MICRONAS INTERMETALLPRELIMINARY DATA SHEET HAL400, HAL401 2 200 J B=0OmT 180 | pp = 4.8V Rout 160 Yop | aay | +~ Vpp=12V 140 pp /' 120 2 a Lt 100 ra 7 80 wt 1 : 60 -T ae 40 | 20 ab 9 50-25 0 25 50 75 100 125 150C Ta Fig. 26: Typical dynamic differential output resistance versus temperature ABT ims Hz 100 I TT Tn Ta = 25C Nmeff 110 ee B= 0 mT . | | sy compe B= 65 mT 4 -120 D hs, x sy -130 \ * % 4 -140 ae 83 nT Nz -1An | | 01 1 10 #100 1k 10k 100k 1M Hz _ f Fig. 28: Typical magnetic noise spectrum dB 20 1 Ta = 25C I 0 dB =42.5mV/mT cn 1 0 . \ . \ 10 100 1k 10k 100k - fp Fig. 27: Typical magnetic frequency response 5.0 Fig. 29: Recommended pad size SOT-89A Dimensions in mm MICRONAS INTERMETALL 13HAL400, HAL401 Application Circuits The normal integrating characteristics of a voltmeter is sufficient for signal filtering. Vpo 1 Vpp Voltage HAL 40x Meter ouT1 E High 3 OUT2 Low GND J Do not connect OUT1 or OUT2 te Ground. Fig. 30: Flux density measurement with voltmeter PRELIMINARY DATA SHEET Display the difference between channel 1 and channel 2 to show the Hall voltage. Capacitors 4.7 nF and 330 pF tor electromagnetic immunity are recommended. Vpp . 47n j 330 p 47 n Vpp L ToL Oscillo- = HAL 40x | = = scope OUT1 2 + Chi 1k 3.3k 6.8n 3 ik 3.3k OUT2 Ch2 330 p 47 n ww JL L L Do not connect OUT1 or QUT? to Ground. Fig. 31: Filtering of output signals Vop Vpp R+AR T] wm |= + = >| 15R OUT1 R OUT2 8 + 330 p L GND i nf be Fig. 32: Differential HAL40x output te single-ended output R=10kQ9, C = 7.5nF, AR for offset adjustment, BW_ggp = 1.3 kHz 14 ADC |44 Cc - Do not connect OUT1 or OUT2 to Ground. MICRONAS INTERMETALLPRELIMINARY DATA SHEET HAL400, HAL401 Vpp 4.7n 1 T] suave HAL40x OUT1 OUT2 O Voc26V *#OVer=-6V Fig. 33: Differential HAL 40x output to single-ended output (referenced to ground), filter -BW_ggp = 14.7 kHz Ambient Temperature Due to the internal power dissipation, the temperature on the silicon chip (junction temperature Ty) is higher than the temperature outside the package (ambient tem- perature Ta). Tj =Ta + AT At static conditions, the following equations are valid: AT = Ipp* Vop * Rithuss For typical values, use the typical parameters. For worst case calculation, use the max. parameters for Ipp and Rin, and the max. value for Vpp from the application. Application Notes Mechanical stress on the device surface (caused by the package of the sensor module or overmolding) can influ- ence the sensor performance. The parameter VoutTacpp (see Fig. 3) increases with ex- ternal mechanical stress. This can cause linearity errors at the limits of the recommended operation conditions. MICRONAS INTERMETALL 15HAL400, HAL401 PRELIMINARY DATA SHEET Data Sheet History 1. Preliminary data sheet: HAL400 Linear Hall Effect Sensor IC, March 29, 1994, 6251-346-1PD. First re- lease of the preliminary data sheet. 2. Preliminary data sheet: HAL400 Linear Hall Effect Sensor IC, Aug. 1, 1995, 6251-346-2PD. Second re- lease of the preliminary data sheet. Major changes: Marking code 3. Preliminary data sheet: HAL400 Linear Hall Effect Sensor IC, Sept. 3, 1997, 6251-346-3PD. Third release of the preliminary data sheet. Major changes: Electrical and Magnetic Characteristics diagram: Typical output voltages versus magnetic flux density page 14: Ambient Temperature 4. Preliminary data sheet: HAL400, HAL401 Linear Hall Effect Sensor ICs, June 29, 1998, 6251-346-4PD. Fourth release of the preliminary data sheet. Major changes: additional new type HAL401 various changes in the electrical and magnetic char- acteristics page 4: package diagram outline dimensions changed MIGRONAS INTERMETALL GmbH Hans-Bunte-Strasse 19 D-79108 Freiburg (Germany) P.O. Box 840 D-79008 Freiburg (Germany) Tel. +49-761-517-0 Fax +49-761-517-2174 E-mail: docservice@intermetall.de Internet: http://www. intermetall.de Printed in Germany Order No. 6251-346-4PD All information and data contained in this data sheet are with- out any commitment, are not to be considered as an offer for conclusion of a contract nor shall they be construed as to create any liability. Any new issue of this data sheet invalidates previous issues. Product availability and delivery dates are ex- clusively subject to our respective order confirmation form; the same applies to orders based on development samples deliv- ered. By this publication, MIGRONAS INTERMETALL GmbH does not assume responsibility for patent infringements or other rights of third parties which may result from its use. Reprinting is generally permitted, indicating the source. How- ever, our prior consent must be obtained in all cases. 16 MICRONAS INTERMETALL