NXP magneto-resistive sensors KMA & KMZ series Position sensors for a safer, cleaner, more comfortable ride These advanced sensors, with their ability to help reduce emissions, increase vehicle stability, add driver-independent control functions, and help realize the future of green cars. Key features } Contactless angle measurements up to 180 } High temperature range up to 160 C } Automotive qualification acc. to AEC Q100 The NXP KMA and KMZ series of magneto-resistive (MR) position sensors support the worldwide commitment to reduce CO2 emissions from cars. They help OEMs enhance their engine concepts, creating new ways to meet emissions targets. Key benefits } Insensitive to - magnetic drift during lifetime - magnetic drift with temperature - mechanical tolerances - mechanical shifts caused by thermal stress In electronic valve actuators, for example, they can help reduce untreated emissions through optimization of the combustion air supply and the recirculation rate of exhaust gas. Applications } Throttle position } Pedal position } Wiper position } Electronic steering } Active suspension } Automatic headlight adjustment In diesel engines, they can assist with particle filter regeneration by throttling the intake air and thereby reducing the amount of emitted particulate mass. As part of the load control unit on drive-by-wire engines, the sensors can enable a range of features, including driverindependent control of air intake, control functions for idle speed and cruise control, and Electronic Stability Program (ESP) functions. KMA series: KMA199, KMA199E and KMA200 The KMA series, which includes the KMA199, KMA199E, KMA200 is a family of pre-aligned, ready-to-use angular sensor systems. Each device consists of a magneto-resistive element equipped with two independent MR sensor bridges and a signal-conditioning IC. Each device is housed in a special multi-chip package that allows 90 bending of the MR element. MR sensor MR sensor ASIC ASIC Protection diode Protection diode brb361 brb362 KMA200 sensor system KMA199 / KMA199E sensor system KMA200 features } Programmable angle range: up to 180 } Operating temperature range: -40 to +160 C } Ratiometric analog output } Four analog and two digital output modes selectable } Over- and reverse-voltage protection } On-line diagnosis of all functional blocks } User-programmable EEPROM KMA199/199E features } Programmable angle range: up to 180 } Operating temperature: -40 to 160 C } Ratiometric analog output } Two analog output modes selectable } Detects magnet lost and power lost } Failsafe EEPROM (programmable via one-wire interface) Selection guide: KMA series Specification KMA200 KMA199E Preliminary KMA199 Over-voltage protection / inverse polarity protection 26.5 V -16.5 V Coupled transient & ESD pulses without galvanic coupled Coupled transient & ESD pulses without galvanic coupled Number of outputs 2x analog 1x digital 1x analog 1x analog Operating temperature range -40 to +160 C -40 to +160 C -40 to +160 C Temperature drift error -25 to +125 C (3sigma) -40 to +140 C (3sigma) Referred to +25 C (3sigma) 0.64 - - - 0.80 0.55 - 0.80 0.55 Linearity error -40 to +140 C -40 to +160 C - 1.65 (1) - 1.55 1.00 1.20 Diagnostics Full set of diagnostic features CRC at power on Magnet lost Power lost CRC at power on Magnet lost Power lost (1) Corresponds to overall angular error, including temperature drift. KMA series: Upcoming angular sensor system KMA210 The upcoming KMA210 is a next-generation version of the KMA199. It adds capacitors to the package and as a result requires no external components for operation. It uses an ABCD9 ASIC and offers over-voltage protection up to 16 V. The integrated capacitors deliver supply blocking of 47 nF and output decoupling of 2.2 nF. Engineering samples of the KMA210 will be available Q3, 2009, followed by production volumes in early 2011. MR sensor ratiometric voltage (V) diagnostic area clamp high ASIC max. output voltage Capacitor clamp low min. output voltage diagnostic area Capacitor 0 180 brb363 KMA210 sensor system KMA210 features } Programmable angle range: up to 180 } Operating temperature range: -40 to +160 C } Ratiometric analog output } Over-voltage protection } Detects magnet lost and power lost } Failsafe non-volatile memory with write protection (lock bit) } Enhanced EMC and ESD performance } Built-in capacitors } No external components required Selection guide: KMA series Preliminary Specification KMA210 Over-voltage protection / inverse polarity protection +16 V Reverse: current limited Number of outputs 1x analog Operating temperature range -40 to +160 C Temperature drift error -25 to +125 C (3sigma) -40 to +140 C (3sigma) Referred to +25 C (3sigma) - 0.80 0.55 Linearity error -40 to +140 C -40 to +160 C 1.00 1.20 Diagnostics (1) brb369 Example KMA210 application redundant sensor with ring magnet CRC at power on Magnet lost Power lost Corresponds to overall angular error, including temperature drift. mechanical angle () brb371 KMZ series: Upcoming angular sensor system KMZ60 The KMZ series includes angular sensors designed for use in brushless (BL) DC motors and steering applications. Each device consists of a magneto-resistive element equipped with two independent MR sensor bridges and two instrumentation amplifiers with temperature compensation. The upcoming KMZ60 offers performance similar to the KMZ43T, but with increased output levels and temperature compensation. Available in a small SO8 package, it supports level-shift functions in microcontroller applications. Engineering samples of the KMZ60 will be available Q4 of 2009, with production volumes planned for early 2011. VDD R1 VDDS U/I I = f(Vcc) Output signals R2 Tek Stop: 50.0 kS/s Vin1p cos CURRENT MULTIPLIER 343 Acqs Ch2 Freq 39.8884 Hz VOUT1 Vin1n T Ch1 Freq 40.1930 Hz VOUT1 I = f(Temp) BAND GAP R3 VOUT2 Vin2p VOUT2 Vin2n sin T Ch1 500 mV GNDS Ch2 500 mV M10.0 ms Ch2 GND -10 mV brb364 KMZ60 application KMZ60 features } Temperature-compensated output amplitude } Ratiometric output voltage } Temperature-compensation circuit can be switched off in case of external compensation } Temperature sensor output KMZ60 package KMZ60 operating parameters Preliminary Specification KMZ60 Ambient working temperature range (1) 40 to 150 C Supply voltage range 3.0 to 5.5 V Maximum supply current (2) < 12 mA Linearity error (3) -0.5 to +0.5 Phase error at 25,000 rpm < 1.5 Amplitude matching of output signals (4) 2% Peak-to-peak output voltage > 30% to <60%V DD Over full specification (2) Including maximum permissible output loads (3) After offset compensation and amplitude correction (4) For sinusoidal input signals inside the permissible output range up to 1 kHz (1) www.nxp.com (c) 2009 NXP B.V. All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. Date of release: August 2009 The information presented in this document does not form part of any quotation or contract, is believed to be accurate and Document order number: 9397 750 16772 reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Printed in the Netherlands Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.