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february 2009 sense & control data sheet rev. 2.0 TLE4976-1K / tle4976l high precision hall effect switch with current interface
edition 2009-02-12 published by infineon technologies ag 81726 munich, germany ? 2009 infineon technologies ag all rights reserved. legal disclaimer the information given in this docu ment shall in no event be regarded as a guarantee of conditions or characteristics. with respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, infine on technologies hereby disclaims any and all warranties and liabilities of any kind, including witho ut limitation, warranties of non-infrin gement of intellectua l property rights of any third party. information for further information on technology, delivery terms and conditions and prices, please contact the nearest infineon technologies office ( www.infineon.com ). warnings due to technical requirements, components may contain dangerous substances. for information on the types in question, please contact the nearest infineon technologies office. infineon technologies compon ents may be used in life-su pport devices or systems only with the express written approval of infineon technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safe ty or effectiveness of that de vice or system. life support devices or systems are intended to be implanted in the hu man body or to support an d/or maintain and sustain and/or protect human life. if they fail, it is reasonable to assume that the health of the user or other persons may be endangered.
TLE4976-1K revision history: 2009-02-12, rev. 2.0 previous version: v1.1 ?h? version substituted by ?k? 6, 7 timing and output swit ching diagram inserted we listen to your comments any information within this do cument that you feel is wro ng, unclear or missing at all? your feedback will help us to continuous ly improve the qualit y of this document. please send your proposal (including a reference to this document) to: sensors@infineon.com data sheet 1 rev. 2.0, 2009-02-12 TLE4976-1K tle4976l
TLE4976-1K tle4976l table of contents data sheet 2 rev. 2.0, 2009-02-12 1 product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3 target applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 pin configuration (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.3 pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.4 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.5 functional block description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.6 timing diagram and output switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.1 application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.2 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.3 operating range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.4 electrical and magnetic characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.1 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.2 footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4.3 distance between chip and package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.4 package marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 table of contents
product name product type ordering code package TLE4976-1K hall effect switch sc59 tle4976l hall effect switch pg-sso-3-2 high precision hall effect switch with current interface TLE4976-1K tle4976l data sheet 3 rev. 2.0, 2009-02-12 1 product description 1.1 overview the TLE4976-1K and tle4976l are high precision unipolar hall switches with a two wire, 6ma/14ma current interface in a smd or leaded package. a chopped measurement principle prov ides high stability switching thresholds for operating temperatures between -40c and 150c. 1.2 features ? 3.0v to 24v supply voltage operation ? high sensitivity and high stability of the magnetic switching points ? high resistance to mechanical st ress by active er ror compensation ? reverse battery protection (-18v) ? superior temper ature stability ? peak temperatures up to 195c without damage ? low jitter (typ. 1s) ? high esd performance ( 8kv hbm) ? digital output signal with current modulation 6ma / 14ma ? unipolar version ? smd package sc59 (sot23 compatible): TLE4976-1K ? leaded package pg-sso-3-2: tle4976l 1.3 target applications the sensor targets all applications where a high precisi on unipolar magnetic switch is required (e.g. position sensing). due to the current interface the number of wires required in the application is minimized thus saving costs and increasing relia bility. this is specially helpfu l in all applications where the microcontr oller is not on the same pcb as the hall switch but in some distance.
data sheet 4 rev. 2.0, 2009-02-12 TLE4976-1K tle4976l functional description 2 functional description 2.1 general the TLE4976-1K and the tle4976l are integrated circuit hall-effect sensors designed specifically for highly accurate applications. precise magnetic switching thresholds and high temperat ure stability are achieved by active error compensation circuits and chopper techniques on the chip. the ic has a current interface with a 6ma / 14ma output. 2.2 pin configuration (top view) center of sensitive area 1 0.15 1.5 0.15 0.8 2 3 3 2 1 pg-sso-3-2 sc59 0.1 1.35 0.1 2.08 figure 1 pin configuration and center of sensitive area 2.3 pin description table 1 pin description for TLE4976-1K (sc59) pin no. symbol function comment 1 v s supply voltage 2 n.c. no internal connection 3 gnd ground table 2 pin description for tle4976l (pg-sso-3-2) pin no. symbol function comment 1 v s supply voltage 2 gnd ground 3 n.c. no internal connection
data sheet 5 rev. 2.0, 2009-02-12 TLE4976-1K tle4976l functional description 2.4 block diagram ref chopped hall probe v s amplifier low pass filter comparator with hysteresis voltage regulator reverse polarity protected oscillator and sequencer bias and compensation circuits 8 ma figure 2 functional block diagram 2.5 functional block description the chopped hall ic switch comprises a hall probe, bias generator , compensation circuits , oscillator and output transistor. the bias generator provides currents for the hall probe and the active circui ts. compensation circuits stabilize the temperature behavior and reduce technology variations. the active error compensation rejects offsets in signal stages and the influence of mechanical stress to the hall probe caused by molding and soldering processes and other thermal stresses in the package. this chopper technique together with the threshold generator and the comparator ensure high accurate magnetic switching points. the current consumption depends on the switching status.
data sheet 6 rev. 2.0, 2009-02-12 TLE4976-1K tle4976l functional description 2.6 timing diagram an d output switching applied magnetic field 90% 10% i s t f t d t r t d b rp b op the output switching is different for theTLE4976-1K a nd tle4976l. it is explained in the following section. TLE4976-1K: figure 3 timing diagram of TLE4976-1K i shigh i s b op b rp 0 i slow b figure 4 output switching of TLE4976-1K
applied magnetic field 90% 10% i s t f t d t r t d b rp b op data sheet 7 rev. 2.0, 2009-02-12 TLE4976-1K tle4976l functional description tle4976l: figure 5 timing diagram of tle4976l i shigh i s b op b rp 0 i slow b figure 6 output switching of tle4976l
data sheet 8 rev. 2.0, 2009-02-12 TLE4976-1K tle4976l specification 3 specification 3.1 application circuit input c gnd v supply c tle 4976x v s gnd r l r s 4.7 nf v sig the advantage of the current interface is, that only two wires are necessary to connect the sensor. at least one series resistor is required to convert the tw o output states of the hall se nsor from current consumption to a voltage information. a typical value for r l is 100 . this gives a typical signal voltage level v sig = 0.8v in the off state and 1.4v in the on state. if the sensor is operated in an application environment with disturbances on the supply line, an additional series resistor r s is recommended. the maximum value for the series resistor r s can be calculated using the following formula: v s_min is the minimal supply voltage which might occur due to disturbances on the supply line v s . example: v supplymin = 6v; v smin = 3v; r l = 100 ; i shighmax = 17ma : r smax = 76.5 figure 7 application circuit r smax v supplymin v smin ? i shighmax ------------------ -------------- ------------- r l ? =
data sheet 9 rev. 2.0, 2009-02-12 TLE4976-1K tle4976l specification 3.2 absolute maximum ratings table 3 absolute maximum rating parameters parameter symbol limit values unit note / test condition min. max. supply voltage v s ? 18 ? 18 ? 18 18 24 26 v for 1h, r s +r l > 75 for 5min, r s +r l > 75 supply current through protection device i s ? 50 +50 ma junction temperature t j ? ? ? ? 155 165 175 195 c for 2000h (not additive) for 1000h (not additive) for 168h (not additive) for 3 x 1h (additive) storage temperature t s ? 40 150 c magnetic flux density b ? unlimited mt attention: stresses above the max. values listed here may cause permanent damage to the device. exposure to absolute maximum rating conditions for extended periods may affect device reliability. maximum ratings are absolute ratings; exceeding only one of these values may cause irreversible damage to the integrated circuit. table 4 esd protection 1) 1) human body model (hbm) tests according to: eos/esd a ssociation standard s5.1-1993 and mil. std. 883d method 3015.7 parameter symbol limit values unit note / test condition min. max. esd voltage v esd 8 hbm, r = 1.5k , c = 100pf t a = 25c 3.3 operating range table 5 operating conditions parameters parameter symbol values unit note / test condition min. typ. max. supply voltage v s 3 18 v 3 24 for 5 min, r s +r l > 100 junction temperature t j - 40 150 175 for 168h the following operating conditions must not be exceeded in order to ensure correct operation of the hall effect switch. all parameters specified in the followi ng sections refer to these operating conditions unless otherwise mentioned.
data sheet 10 rev. 2.0, 2009-02-12 TLE4976-1K tle4976l specification 3.4 electrical and magnetic characteristics table 6 general electrical characteristics 1) 1) over operating range, unless otherwise specified. typical values correspond to v s = 12v and t a = 25c parameter symbol values unit note / test condition min. typ. max. supply current low i slow 5 6 7 ma b > b rp v s = 3v ... 18v supply current high i shigh 12 14 17 ma b < b op vs = 3v ... 18v reverse current i sr ? 0.2 ma v s = -18v output fall time t f ? 0.4 1.6 s r s = 100 output rise time t r ? 0.4 1.6 s chopper frequency f osc ? 320 khz switching freq. f sw ? 2) to operate the sensor at the max. switching frequency, the value of the m agnetic signal amplitude must be 1.4 times higher than for static fields. this is due to the - 3db cor ner frequency of the low pass filter in the signal path 15 2) khz delay time 3) systematic delay between magnetic threshold reached and output switching 3) t d ? 13 s output jitter 4) jitter is the unpredictable devia tion of the output switching delay 4) t qj ? 1 ? s rms typical value for square wave signal 1khz power-on time 5) time from applying v s 3.0v to the sensor unti l the output state is valid 5) t pon ? 13 ? s v s 3.0v thermal resistance 6) thermal resistance from junction to ambient 6) r thja ? 100 ? k/w sc59 190 pg-sso-3-2 product characteristics involve the spread of values guaranteed within the specified voltage and ambient temperature range. typical characteristics are the median of the production. calculation of the ambient temperature: e.g. for v s = 12.0v, r s = 100w, i shightyp = 14ma : power dissipation: p dis = 148.4mw. in t a = t j ? (r thja x p dis ) = 175c ? (100k/w x 0.15w) resulting max. ambient temperature: t a = 160c
table 7 magnetic characteristics 1) 1) over operating range, unless otherwise specified. typical values correspond to v s = 12 v. parameter symbol t j [c] values unit note / test condition min. typ. max. operating point b op -40 ... 150 5.5 9.25 11.0 mt TLE4976-1K -40 25 150 1.1 1.0 0.9 4.1 4.0 3.8 6.1 6.0 5.8 tle4976l release point b rp -40 ... 150 5.0 7.25 10.5 mt TLE4976-1K -40 25 150 3.1 3.0 2.9 6.1 6.0 5.8 8.2 8.0 7.7 tle4976l hysteresis b hys -40 ... 150 0.5 2.0 3.0 mt TLE4976-1K -40 25 150 - 0.5 - - 2.0 - - 3.5 - tle4976l temperature compensation of magnetic thresholds t c - 0 - ppm/c TLE4976-1K - -200 - tle4976l repeatability of magnetic thresholds 2) b rep is equivalent to the noise constant 2) b rep - 40 - mt typ. value for b / t > 12 mt/ms branded side n s data sheet 11 rev. 2.0, 2009-02-12 TLE4976-1K tle4976l specification field directio n definition positive magnetic fields are defi ned with the south pole of the magne t to the branded side of package. figure 8 definition of magnetic field direction
data sheet 12 rev. 2.0, 2009-02-12 TLE4976-1K tle4976l package information 4 package information 4.1 package outline 3 x 0.4 +0.05 -0.1 m 0.1 0.95 0.95 (0.55) 3 ?.1 +0.2 2.8 -0.1 0.15 max. 1.1 ?.1 0.2 +0.1 +0.1 -0.05 0.15 0?...8? max. gps09473 0.45 ?.15 +0.15 -0.3 1.6 0.1 m 0.1 3 2 1 figure 9 sc59 package outline (all dimensions in mm)
total tolerance at 10 pitches ? 1) no solder function area ?.3 ?.4 6.35 12.7 12.7 ? ?.5 -0.5 +0.75 4 ?.3 9 gpo05358 -0.15 ?.1 tape adhesive tape 0.25 0.39 ?.5 a 18 6 23.8 ?.5 38 max. -1 1 13 2 1.27 ?.25 1.27 ?.25 0.6 max. 0.4 ?.05 1) 1 max. 0.15 max. 1.9 max. 4.06 ?.08 4.16 ?.05 ?.08 3.29 3 ?.06 0.2 (0.25) x 45? 0.8 ?.1 7? x 45? ?.1 0.35 0.2 +0.1 7? (0.79) a 2 1.52 ?.05 data sheet 13 rev. 2.0, 2009-02-12 TLE4976-1K tle4976l package information figure 10 pg-sso-3-2 package outline (all dimensions in mm)
data sheet 14 rev. 2.0, 2009-02-12 TLE4976-1K tle4976l package information 4.2 footprint reflow soldering wave soldering 0. 8 0. 8 1.2 0.9 1.3 0.9 0.8 0.8 1.2 1.6 1.4 min 1.4 min figure 11 footprint sc59
data sheet 15 rev. 2.0, 2009-02-12 TLE4976-1K tle4976l package information 4.3 distance between chip and package branded side d: distance chip to upper side of ic d d = 0.56 0.1 mm pg-sso-3-2 : 0.57 d : distance chip to upper side of ic mm ?.08 aea02510-1 hall-probe branded side d figure 12 distance between chip and package: left: TLE4976-1K, right: tle4976l 4.4 package marking aea03641 06 year (y) = 0...9 month (m) = 1...9, o - oc tober n - november d - december y m 76 year (y) = 0...9 calendar week (ww) = 01...5 2 yww 76l s figure 13 marking of TLE4976-1K and tle4976l
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