KMZ41 Magnetic field sensor Rev. 6 18 November 2010 Product data sheet 1. Product profile 1.1 General description The KMZ41 is a sensitive magnetic field sensor, employing the magneto-resistive effect of thin film permalloy. The sensor contains two galvanically separated Wheatstone bridges, which enclose an angle of 45 degrees. A rotating magnetic field strength > 40 kA/m (recommended field strength > 100 kA/m) in the surface parallel to the chip (x-y plane) will deliver two independent sinusoidal output signals, one following a cos(2) and the second following a sin(2 ) function. The sensor can be operated at any frequency between DC and 1 MHz. 1.2 Features and benefits Accurate and reliable angle measurement Mechanical robustness, contactless principle Wear-free operation Accuracy independent of mechanical tolerances Extended temperature range 1.3 Quick reference data Table 1. Quick reference data T =25 C and H = 100 kA/m, V = 5 V unless otherwise specified. amb ext CC Symbol Parameter Conditions Min Typ Max Unit 1 V supply voltage - 59V CC 1 V peak voltage see Figure 2 73 81 89 mV peak 1 V offset voltage per supply voltage 2- +2 mV/V offset see Figure 2 1 2 R bridge resistance 2.0 2.5 3.0 k bridge 1 Applicable for bridge 1 and bridge 2. 2 Bridge resistance between pin 4 and pin 8, pin 3 and pin 7, pin 5 and pin 1, pin 6 and pin 2.KMZ41 NXP Semiconductors Magnetic field sensor 2. Pinning information Table 2. Pinning Pin Symbol Description Simplified outline 1 ON1 output voltage bridge 1 8 5 2 ON2 output voltage bridge 2 x 3V supply voltage bridge 2 CC2 y 4V supply voltage bridge 1 1 4 CC1 mgd790 5 OP1 output voltage bridge 1 6 OP2 output voltage bridge 2 7 GND2 supply voltage bridge 2 8 GND1 supply voltage bridge 1 3. Ordering information Table 3. Ordering information Type number Package Name Description Version KMZ41 SO8 plastic small outline package 8 leads body width 3.9 mm SOT96-1 4. Circuit diagram KMZ41 bridge 1 bridge 2 cos sin R11 R21 R12 R22 R13 R14 R23 R24 V OP1 GND1 ON1 OP2 GND2 ON2 V CC1 CC2 V V O1 O2 V V V V V V V V CC1 OP1 ON1 OP2 ON2 CC2 V V V V 006aaa529 Fig 1. Device and test circuit diagram KMZ41 All information provided in this document is subject to legal disclaimers. NXP B.V. 2010. All rights reserved. Product data sheet Rev. 6 18 November 2010 2 of 10