Programmable receiver avoids jamming

RF solution goes to alternative frequency

Targeted at garage door openers and tire-pressure-monitoring systems, the MICRF218 programmable receiver is offered as the first such device with the ability to escape from a jamming source and migrate to an alternative frequency. It is also claimed to be the world’s first integrated ASK/OOK receiver with selectable IF bandwidth for 300 to 450-MHz operation.

Housed in a 16-pin QSOP package, the receiver accommodates two reference crystals with the use of an external switch, and includes a fully integrated IF section with built-in image rejection. Additional features include −108-dBm sensitivity at 433.92 MHz, a power consumption of 4 mA at 315 MHz, and data rates to 10 kbits/s at 433.92 MHz.

For tire-pressure-monitoring applications, a −40° to 125°C operating temperature range can cause significant frequency deviation in the transmitter. The MICRF218 in wide IF bandwidth mode can accommodate transmitter signal drift due to temperature changes in the operating environment. (From $1.71 ea/10,000—available now.)

Micrel , San Jose , CA
Sales 408-944-0800
http://www.micrel.com