Si4455 EASY-TO-USE, LOW-CURRENT OOK/(G)FSK SUB-GHZ TRANSCEIVER Description Silicon Laboratories’ Si4455 is an easy-to-use, low current, sub-GHz EZRadio® transceiver. Covering all major bands, it combines plug-and-play simplicity with the flexibility needed to handle a wide variety of applications. The compact 3x3 mm package size combined with a low external BOM count makes the Si4455 both space efficient and cost effective. The +13 dBm output power and excellent sensitivity of –116 dBm allows for a longer operating range, while the low current consumption of 18 mA TX (at 10 dBm), 10 mA RX, and 50 nA standby, provides for superior battery life. By fully integrating all components from the antenna to the GPIO or SPI interface to the MCU, the Si4455 makes realizing this performance in an application easy. Design simplicity is further exemplified in the Wireless Development Suite (WDS) user interface module. This configuration module provides simplified programming options for a broad range of applications in an easy to use format that results in both a faster and lower risk development. Like all Silicon Laboratories’ EZRadio devices, the Si4455 is fully compliant with most worldwide regulatory standards such as FCC, ETSI, and ARIB. GPIO3 Features - Frequency range = 283–960 MHz - Receive sensitivity = –116 dBm - Modulation - (G)FSK - OOK - Max output power = +13 dBm - Low active power consumption - 10 mA RX - 18 mA TX @ +10 dBm - Low standby current = 50 nA - Max data rate = 500 kbps - Power supply = 1.8 to 3.6 V - TX and RX 64 byte FIFOs - Automatic frequency control (AFC) - Automatic gain control (AGC) - Integrated battery voltage sensor - Packet handling including preamble, sync word detection, and CRC - Low BOM - 20-Pin 3x3 mm QFN package Applications - Remote control Home security and alarm Telemetry Garage and gate openers Remote keyless entry Home automation Industrial control Sensor networks Health monitors GPIO2 XIN XOUT Synthesizer SDN 25-32MHz XO Rx Chain RXn LNA PGA Rx/Tx Modem ADC SPI Interface Controller RXp nSEL SDI SDO SCLK nIRQ TX PA Battery Voltage Sensor Aux ADC VDD EZRadio GPIO1 GPIO0 Copyright © 2012 by Silicon Laboratories 07.12.12 Si4455 EASY-TO-USE, LOW-CURRENT OOK/(G)FSK SUB-GHZ TRANSCEIVER Selected Electrical Specification Parameter Symbol Min Typ Max Supply Voltage VDD 1.8 3.3 3.6 V Frequency Range FTX/RX 283 — 350 MHz 425 — 525 MHz 850 — 960 MHz IShutdown — 30 — nA IStandby — 50 — nA IRX — 10 — mA Current Consumption Test Condition ITX Unit +10 dBm output power, 868 MHz — 18 — mA PRX-_2 BER <0.1%, 2.4 kbps, GFSK, BT = 0.5, ∆F = 25kHz, 114 kHz Rx BW — –116 — dBm PRX-_OOK BER < 0.1%, 1 kbps, 185 kHz Rx BW, OOK, PN15 data — –113 — dBm C/I1-CH ±1 Channel Offset — –56 — dB C/I2-CH ±2 Channel Offset — –59 — dB 200kBLOCK 200 kHz–1 MHz Offset — –58 — dB 1MBLOCK 1 MHz Offset — –61 — dB 8MBLOCK 8 MHz Offset — –79 — dB Image Rejection ImREJ Rejection at the image frequency IF=468kHz — –40 — dB Data Rate DRFSK (G)FSK Modulation 1.0 — 500 kbps DROOK OOK Modulation 0.5 — 120 kbps –40 — +13 dBm Rx Sensitivity Selectivity2 Blocking2 Output Power PTX Notes: 1. Test Conditions: 3.3 VDC VDD, 25 ˚C, external reference signal (XIN) = 1.0 VPP at 30 MHz, centered around 0.8 VDC. Sensitivity measured at 434 MHz. 2. Desired reference signal 3 dB above sensitivity, BER<0.1%, Interferer is CW and desired modulation with 1.2 kbps, ∆F = 5.2 kHz, GFSK with BT = 0.5, Rx BW = 58 kHz, 100 kHz channel spacing. Ordering Guide Part Number* Description Package Type Operating Temperature Si4455-B1A-FM EZRadio Transceiver 3x3 QFN-20 Pb-free –40 to 85 °C *Note: Add an “R” at the end of the device part number to denote tape and reel option. C3 SDO GP3 SCLK GP4 10 GP5 Microcontroller 16 nSEL XOUT 17 XIN 18 GP2 nIRQ 12 11 GPIO1 9 6 L1 SDI GPIO0 C4 13 4 TX 5 C1 15 Si4455 GND C5 3 8 RXn L2 GP1 14 7 L3 GP0 VDD RXp C2 30 MHz 2 GND L4 L5 1 19 GPIO3 SDN L6 20 GND VDD C6 GPIO2 Application Circuit VDD EZRadio C7 C8 C9 100 p 100 n 1u Copyright © 2012 by Silicon Laboratories Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders 07.12.12 Smart. Connected. Energy-Friendly Products Quality Support and Community www.silabs.com/products www.silabs.com/quality community.silabs.com Disclaimer Silicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Laboratories reserves the right to make changes without further notice and limitation to product information, specifications, and descriptions herein, and does not give warranties as to the accuracy or completeness of the included information. Silicon Laboratories shall have no liability for the consequences of use of the information supplied herein. This document does not imply or express copyright licenses granted hereunder to design or fabricate any integrated circuits. The products must not be used within any Life Support System without the specific written consent of Silicon Laboratories. A "Life Support System" is any product or system intended to support or sustain life and/or health, which, if it fails, can be reasonably expected to result in significant personal injury or death. Silicon Laboratories products are generally not intended for military applications. Silicon Laboratories products shall under no circumstances be used in weapons of mass destruction including (but not limited to) nuclear, biological or chemical weapons, or missiles capable of delivering such weapons. Trademark Information Silicon Laboratories Inc., Silicon Laboratories, Silicon Labs, SiLabs and the Silicon Labs logo, CMEMS®, EFM, EFM32, EFR, Energy Micro, Energy Micro logo and combinations thereof, "the world’s most energy friendly microcontrollers", Ember®, EZLink®, EZMac®, EZRadio®, EZRadioPRO®, DSPLL®, ISOmodem ®, Precision32®, ProSLIC®, SiPHY®, USBXpress® and others are trademarks or registered trademarks of Silicon Laboratories Inc. ARM, CORTEX, Cortex-M3 and THUMB are trademarks or registered trademarks of ARM Holdings. Keil is a registered trademark of ARM Limited. All other products or brand names mentioned herein are trademarks of their respective holders. Silicon Laboratories Inc. 400 West Cesar Chavez Austin, TX 78701 USA http://www.silabs.com