UHF transceiver increases battery life in wireless applications

19th February 2008
Posted By : ES Admin
UHF transceiver increases battery life in wireless applications
Claiming the industry's lowest receiver (RX) current consumption (<3mA), which significantly increases battery life in wireless applications, the new SX1211 UHF transceiver from Solid State Supplies is optimised for designs in the unlicensed industrial, scientific and medical (ISM) frequency bands (868-870 MHz and 902-928 MHz).
Key applications include security and alarm systems, sub-metering, industrial monitoring and control, building automation and KONNEX systems. The SX1211 also features a 64-byte FIFO buffer that enables more power efficient batch data transfers between the transceiver and microcontroller. Transmit power consumption at +10 dBm is only 25 mA.

Supporting both frequency-shift keying (FSK) modulation and on-off keying (OOK) modulation, the SX1211 can be used for both new and legacy sensor network designs. It also supports FSK data rates from 1.56 to 100 kbit/s and OOK data rates up to 32 kbit/s. Receiver sensitivity for FSK modulation is -104 dBm at 25 kbit/s and for OOK is -110 dBm at 2 kbit/s.

All major RF communication parameters are programmable and can be configured dynamically, with RF output power programmable up to +12.5 dBm in eight steps. Operating over a supply voltage range of 2.1V to 3.6V, the SX1211 meets regulatory standards for both Europe (ETSI EN 300- 220-1) and North America (FCC parts 15.247 and 15.249), for both digital modulation (DTS) and frequency hopping systems

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