●Standalone Tag Reader Circuit
●STARC
●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 : 2Ω @ 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
●\- Ouput slew rate control
●\- No external protection device required.
