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Details, datasheet, quote on part number:KMZ52
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| Part: | KMZ52 |
| Category: | Sensors => Magnetic Sensors |
| Description: | KMZ52; Magnetic Field Sensor;; Package: SOT109 (SO16) |
| Company: | Philips Semiconductors |
| Datasheet: | Download KMZ52 datasheet File size : 67 kB |
| Request For quote: | Find where to buy KMZ52
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Datasheet text preview:
DISCRETE SEMICONDUCTORS
DATA SHEET
M3D396
KMZ52 Magnetic Field Sensor
Product specification 2000 Jun 09
Philips Semiconductors
Product specification
Magnetic Field Sensor
FEATURES · High sensitivity · Integrated compensation coil · Integrated set/reset coil. APPLICATIONS · Navigation · Current and earth magnetic field measurement · Traffic detection. DESCRIPTION The KMZ52 is an extremely sensitive magnetic field sensor, employing the magnetoresistive effect of thin-film permalloy. The sensor contains two magnetoresistive Wheatstone bridges physically offset from one another by 90° and integrated compensation and set/reset coils. The integrated compensation coils allow magnetic field measurement with current feedback loops to generate outputs that are independent of drift in sensitivity. The orientation of sensitivity may be set or changed (flipped) by means of the integrated set/reset coils. A short current pulse should be applied to the compensation coils to recover (set) the sensor after exposure to strong disturbing magnetic fields. A negative current pulse will reset the sensor to reversed sensitivity. By use of periodically alternated flipping pulses and a lock-in amplifier, the output is made independent of sensor and amplifier offset. PINNING SYMBOL +Iflip2 VCC2 GND2 +Icomp2 GND1 +Icomp1 -Icomp1 -VO1 +VO1 -Iflip1 +Iflip1 VCC1 -Icomp2 -VO2 +VO2 -Iflip2 PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
KMZ52
DESCRIPTION flip coil bridge supply voltage ground compensation coil ground compensation coil compensation coil bridge output voltage bridge output voltage flip coil flip coil bridge supply voltage compensation coil bridge output voltage bridge output voltage flip coil
1, handbook6 halfpage
9
pin 1 index
1
8
MBL201
Fig.1 Simplified outline SOT109-1.
2000 Jun 09
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Philips Semiconductors
Product specification
Magnetic Field Sensor
QUICK REFERENCE DATA SYMBOL VCC S Voffset Rbridge Rcomp Acomp Rflip Iflip tflip Notes bridge supply voltage sensitivity (uncompensated) offset voltage per supply voltage bridge resistance compensation coil resistance field factor of compensation coil; note 1 resistance of set/reset coil recommended flipping current for stable operation; note 2 flip pulse duration; note 2 PARAMETER MIN. - 12 -1.5 1 100 19 1 ±800 1 TYP. 5 16 0 2 170 22 2 3
KMZ52
MAX. 8 - +1.5 3 300 25 3 100
UNIT V mV/V ------------kA/m mV/V k A/m --------mA µs
±1 000 ±1 200 mA
1. The compensation coil generates a field Hcomp = Acomp × Icomp in addition to the external field Hext. Sensor output will become zero if Hext = Hcomp. 2. Average power consumption of the flipping coil, defined by current, pulse duration and pulse repetition rate may not exceed the specified limit, see Chapter "Limiting values". LIMITING VALUES In accordance with the Absolute Maximum System (IEC 60134). SYMBOL VCC Ptot Tstg Tamb Icomp Iflip (max) Pflip (max) Visol bridge supply voltage total power dissipation storage temperature maximum operating temperature maximum compensation current maximum flipping current maximum flipping power dissipation voltage between isolated systems: flip coil and Wheatstone bridge; compensation coil and Wheatsone bridge; flip coil and compensation coil PARAMETER - - -65 -40 - - - - MIN. 8 130 +150 -125 15 1 500 50 60 MAX. V mW °C °C mA mA mW V UNIT
THERMAL CHARACTERISTICS SYMBOL Rth j-a PARAMETER terminal resistance from junction to ambient VALUE 105 UNIT K/W
2000 Jun 09
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