data sheet 1 2000-07-01 double differential magneto resistor fp 425 l 90 version 2.0 dimensions in mm gpx06897 1 2 3 4 5 6 e / / e 0.4 0.55 0.45 3.3 3.1 2.06 1.86 0.396 0.390 2) 3) 3) a 0.2 a 0.789 0.783 c 0.04 incl. lacquer-cover c b b 1...6 pin connection <-0.1 (0.33) 0.045 0.025 (0.13) 0.2 max. 0.2 max. 0.55 0.45 2.76 2.96 b 0.2 0.04 d 4.2 3.75 3.55 4.0 d b 1) punching- points 5.55 5.45 6.0 6.2 (0.8) 0.65 0.55 1.1 1.2 1.1 1.2 2-3 3 r 2 1-2 r 1 6 r 5-6 5 r 4-5 4 center-distance between the diff.-systems. 6 fingers on both sides free of lacquer seperate at punching-points. 3) 2) if delivery as tape, approx. weight 0.2 g 1) features ? double differential magneto resistor on one carrier ? accurate intercenter spacing ? high operating temperature range ? high output voltage ? compact construction ? available in strip form for automatic assembly ? optimized intercenter spacing on modules m = 0.5 mm ? reduced temperature dependence of offset voltage typical applications ? incremental angular encoders ? detection of sense of rotation ? detection of speed ? detection of position
data sheet 2 2000-07-01 fp 425 l 90 the double differential magneto resistor assembly consists of two pairs of magneto resistors, (l-type insb/nisb semiconductor resistors whose resistance value can be magnetically controlled), which are fixed to a silicon substrate. contact to the magneto resistors is achieved using a copper/polyimide carrier film known as tab. the basic resistance of each of the magneto resistors is 90 w . the two series coupled pairs of magneto resistor are actuated by an external magnetic field or can be biased by a permanent magnet and actuated by a soft iron target. type ordering code fp 425 l 90 q65425-l90 (singular) fp 425 l 90 q65425-l0090e001 (taped)
data sheet 3 2000-07-01 fp 425 l 90 absolute maximum ratings electrical characteristics ( t a = 25 c) parameter symbol limit values unit operating temperature t a C 40 / + 175 c storage temperature t stg C 40 / + 185 c power dissipation 1) p tot 800 mw supply voltage ( b = 0.2 t, t a = 25 c) v in 8v thermal conductivity Cattached to heatsink Cin still air g thcase g tha 20 2 mw/k mw/k nominal supply voltage ( b = 0.2 t) 2) v inn 5v basic resistance ( i < 1 ma, b = 0 t) r 01-3 160 C 280 w center symmetry 3) m 3% relative resistance change ( r 0 = r 01-3 , r 04-6 at b = 0 t) b = 0.3 t 4) b = 1 t r b / r 0 > 1.7 > 7 C temperature coefficient b = 0 t b = 0.3 t b = 1 t tc r C 0.16 C 0.38 C 0.54 %/k %/k %/k 1) t = t case 2) t = t case , t < 80 c 3) 4) 1 t = 1 tesla = 10 4 gauss m r 01 2 C r 02 3 C C r 01 2 C -------------------------------- = 100% for r 01-2 > r 02-3 m r 04 5 C r 05 6 C C r 04 5 C -------------------------------- = 100% for r 04-5 > r 05-6
data sheet 4 2000-07-01 fp 425 l 90 max. power dissipation versus temperature p tot = f ( t ), t = t case , t a typical mr resistance versus temperature r 01-3, 4-6 = f ( t a ), b = parameter maximum supply voltage versus temperature v in = f ( t ), b = 0.2 t typical mr resistance versus magnetic induction b r 01-3, 4-6 = f ( b ), t a = 25 c
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