Philips Semiconductors
Product Profile
PCF7991AT
高价收车广告图片May 1998
Advanced Bastation IC, ABIC
Features
• Extended system operating range due to powerful AM/PM demodulation technique
• Ideally suited for "Intelligent Antenna" and "Active Antenna" architectures宝宝生活记录>三色鱼
• High antenna drive capabilities, CW: 200mAp • Low antenna driver output resistance, 3.5 Ω• Excellent receiver nsitivity, 2mVpp • Large receiver dynamic range
• Programmable clock divider, modulator, receiver gain and filter characteristics
• Fast "read after write" receiver ttling characteristics
• On-chip receive EMI filter干鲍鱼怎么做好吃又简单方便
食物名称
• Antenna failure mode detection • Few external components
• Operating supply voltage: 4.5 to 5.5 V • Power down mode: 7µA @ 5.5 V • 14-pin SO package
General Description
The PCF7991 is a highly integrated and powerful advanced bastation IC, ABIC, ideally suited for vehicle immobilisation applications. The device
incorporates all necessary functions to facilitate reading and writing of transponders.
The ABIC, PCF7991 employs a unique AM/PM demodulation technique that extends the system operating range compared with simple envelope detection.
经典名菜
Optimid to operate with the Philips transponder family (PCF79xx), the ABIC can be ud in combination with commonly available transponder that employ ASK
modulation. ASK modulation and receive characteristics are widely programmable for powerful system
家长意见50字
adaptation. The ABIC fits "Intelligent Antenna" as well as "Active Antenna" applications.
The carrier frequency can be derived from an on-chip oscillator or an external clock source. A wide range of clock frequencies can be applied due to the programmable on-chip clock divider circuitry.The device enables system diagnostic functions by antenna fail detection features.
白居易写的诗
Communication with the device and the transponder is provided via the rial microcontroller interface.Employing CMOS technology, the device features low power operation and supports Idle and Powerdown modes.
Minimum Application Circuitry
