eBay
Product Overview:
The RFM12B from HopeRF is a single chip, low power, multi-channel FSK transceiver designed for use in applications requiring FCC or ETSI conformance for unlicensed use in the 433 Mhz or 915Mhz band(NOTE: This auction is for ONE 915Mhz version).  The RFM12B transceiver produces a flexible, low cost, and highly integrated solution that does not require production alignments. The chip is a complete analog RF and baseband transceiver. All required RF functions are integrated in module and accessed using the firmware command interface via SPI communication.

NOTE
: This RFM12B radio is the "SMD CHIP Package" version.  The other one is the "DIE" version.  They are functionally equivalent.

Features:

  • Fast frequency-hopping capability
  • Fast-settling, programmable, high-resolution PLL synthesizer
  • High bit rate (up to 115.2 kbps in digital mode)
  • Programmable TX frequency deviation (15 to 240 kHz)
  • Programmable RX baseband bandwidth (67 to 400 kHz)
  • Analog and digital RSSI outputs
  • Automatic frequency control (AFC)
  • Data quality detection (DQD)
  • Internal data filtering and clock recovery
  • SPI compatible serial control interface
  • Clock and reset signals for microcontroller
  • 16 bit RX Data FIFO
  • Two 8 bit TX data registers
  • 2.2 to 3.8 V supply voltage
  • Low standby current (0.3µA)