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Wireless transceiver rolls for 915MHz ISM-band

Posted: 24 May 2007 ?? ?Print Version ?Bookmark and Share

Keywords:wireless control transceiver? sub-1GHz ISM-bands? high transmit power? monolithic ASK/FSK transceiver?

At this week's Sensor+Test Trade Show, Infineon Technologies AG has unveiled the new member of its TDA525x transceiver family designed for use in the 915MHz ISM-band. The TDA5252 transceiver offers a high transmit power and high receive sensitivity targeting wireless control applications that require low power consumption and compact design.

TDA5252 is optimized for use in remote control (car alarm, remote start), wireless sensor networks, home automation and other low-power applications such as metering and HVAC applications.

TDA5252 is a highly integrated monolithic ASK/FSK transceiver for half-duplex bidirectional data communication with speeds up to 64Kbps and filtering, VCO and PLL fully integrated on-chip. The high transmit power (typically 9dBm) and high receive sensitivity (typically -109dBm) combined with the low current consumption (12mA in transmit mode/9mA in receive mode) make TDA5252 suitable for battery operated systems. The device also features a supply voltage range of 2.1-5.5V, allowing for design in low-voltage applications.

Moreover, the transceiver IC has integrated self-polling logic with a fast data rate detection (only one digital symbol required) which enables ultra-low current applications with the transceiver to "wake up" the MCU only if a valid radio frequency signal is present. The digital interface of the TDA5252 to a microcontroller is handled through an I?C bus or a 3-wire bus.

TDA5252 completes the Infineon TDA525x transceiver family for the sub-1GHz ISM-bands. The TDA525x transceiver family has four members which are pin- and software-compatible. These products include the TDA5252, TDA5250, TDA5251 and TDA5255 for the 915 MHz, 868 MHz, 315 MHz and 434 MHz band, respectively.

Housed in a green TSSOP-38 package, the TDA5252 transceiver is fully qualified and available in volume production. Pricing starts at $1.70 each in quantities of 100,000.

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