MC33690DWE Datasheet PDF - Freescale

●MC33690 Standalone Tag Reader Circuit

●The standalone tag reader circuit (STARC) is an integrated circuit dedicated to the  automotive immobilizer applications. It combines the antenna drivers and demodulator  necessary to interface with a transponder. A low dropout voltage regulator and a physical  interface fully compatible with the ISO 9141 norm are also available. The STARC is  fabricated with the SMARTMOSTM3.5 technology. This process is a double layer metal 1.4µm 45V technology,  combining CMOS and bipolar devices.

●• Contactless 125 kHz tag reader module:

●– Self synchronous sample and hold demodulator

●– Amplitude or phase modulation detection

●– High sensitivity

●– Fast read after write demodulator settling time

●– Low resistance and high current antenna drivers, 2W @ 150mA (typ.)

●– Bidirectionnal data transmission

●– Multi-tag, multi-scheme operation

●• Low dropout voltage regulator:

●– Wide input supply voltage range from 5.5V up to 40V

●– Output current capability up to 150mA DC with an external power transistor

●– 5V output voltage with a ±5% accuracy

●– Low voltage reset function

●– Low current consumption in standby mode:

●– 300µA (typ.)

●• ISO 9141 transmitter and receiver module:

●– Input voltage thresholds ratiometric to the supply voltage

●– Current limitation

●– Output slew rate control

●– No external protection device required