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The icyTRX ultra-low-power RF transceiver is designed to meet standards such as Bluetooth Low Energy (Bluetooth Smart), 802.15.4 PHY Layer (e.g. ZigBee), and proprietary standards with data-rates from 62.5 kBit/s up to 4 Mbit/s. icyTRX offers less than 5.5mW consumption in receive mode from a 1.0 V supply. icyTRX is a complete transceiver that is designed for miniaturization, yielding a die size of less than 1.1 mm2 in 55 nm CMOS, requiring minimal external components thanks to high degree of integration. icyTRX is designed for easy integration into ASICs and SoCs.

Various PMU options also available on demand.


Extended battery life, small silicon area, low BOM cost, direct use from 1V battery.


  • Wearables
  • Wireless sensor networks
  • Portable medical
  • IOT
  • Energy harvesting applications

Block Diagram


  • Voltage supply: 1.3V to 1V
  • RX current 5.3 mA (1 MBit/s)
  • TX current 8.6 mA (@ 1 dBm)
  • Exceeds BLE and IEEE802.15.4 requirements
  • Proprietary modes with adjustable bitrate from 62.5 kBit/s up to 4 Mbit/s
  • Bluetooth 4.x sensitivity: -97 dBm at 1 Mbit/s
  • Bluetooth 5 sensitivity: -94 dBm at 2 Mbit/s, -105 dBm at 125 kbit/s (Long Range S=8) and -101 dBm at 500 kbit/s (Long Range S=2)
  • No calibration needed, ultra fast settling
  • Single Rx and Tx port
  • No external RF matching components required
  • Fully integrated FSK-based modem, with programmable pulse shape, data rate and modulation index
  • Link layer functionalities, including automatic packet handling, CRC, separate Rx and Tx FIFOs, AES-CCM
  • Silicon area < 1.1 mm2 (55 nm CMOS)


Available under license as embedded IP block for integration in CMOS SoCs and ASICs Samples and development kits are available

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