|Category||Communication => Wireless => Transceivers|
|Description||MC33690 Standalone Tag Reader Circuit|
|Company||Motorola Semiconductor Products|
|Datasheet||Download MC33690DWR2 datasheet
The Standalone Tag Reader Circuit (STARC) is an integrated circuit dedicated to the automotive immobilizer applications. It combines on the same chip all the circuitry to interface with a transponder : antenna drivers and demodulator. A low dropout voltage regulator and a physical interface fully compatible with the ISO 9141 norm are also available. The Standalone Tag Reader Circuit is fabricated with the SMARTMOSTM3.5 technology. This process is a double layer metal, 1.4µm, 45V technology, combining CMOS and bipolar devices.
Contactless 125kHz tag reader module : - Self synchronous sample & hold demodulator - Amplitude or phase modulation detection - High sensitivity - Fast "read after write" demodulator settling time - Low resistance and high current antenna drivers @ 150mA (typ.) - Bidirectionnal data transmission - Multi tag, multi scheme operation. Low dropout voltage regulator : - Wide input supply voltage range : from 40V - Output current capability 150mA DC with an external power transistor - 5V output voltage with ± 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 - Ouput slew rate control - No external protection device required.
This document contains information on a new product under development. Motorola reserves the right to change or discontinue this product without notice. REV 4.8 © Motorola, Inc., 2002.
Figure 1 : Standalone Tag Reader Circuit Optional : external N channel MOS required for sourced current 50mA. A recommended reference is MMFT 3055VL from Motorola.
Rating Supply voltage Supply voltage without using the voltage regulator (V SUP DD ) Voltage on SOURCE Current into/from GATE Voltage on GATE Voltage on pins : MODE1/2, CEXT, DOUT, LVR, XTAL1/2, Rx, Tx Voltage on RD Voltage on K and AM Current & TD2 (Drivers on & off) Voltage on AGND ESD voltage capability (HBM, see note 1) ESD voltage capability (MM, see note 1) Solder heat resistance test (10s) Junction temperature Storage temperatureNote 1 : Human Body model, AEC-Q100-002 Rev. C. Machine Model, AEC-Q100-003 Rev. E.
Characteristic Junction to ambiant thermal resistance (SOIC20) Symbol Rth Value 80 Unit ° C/W
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