Si4355 EASY-TO-USE, LOW-CURRENT OOK/(G)FSK SUB-GHZ RECEIVER Features Frequency range = Max data rate = 500 kbps 283960 MHz Power supply = 1.8 to 3.6 V Receive sensitivity 64 byte FIFO =116dBm Auto frequency control (AFC) Modulation Automatic gain control (AGC) (G)FSK Integrated battery voltage sensor OOK Packet handling including Low RX Current = 10 mA preamble, sync word detection, and Low standby current = 50 nA CRC Low BOM 20-Pin 3x3 mm QFN package Applications Pin Assignments Remote control Remote keyless entry Home security and alarm Home automation GND 1 20 19 18 17 16 nSEL Telemetry Industrial control Garage and gate openers Sensor networks SDN 2 15 SDI Health monitors RXp 3 14 SDO RXn 4 13 SCLK Description NC 5 12 nIRQ Silicon Laboratories Si4355 is an easy to use, low current, sub-GHz GND 6 7 8 9 10 11 GPIO1 EZRadio receiver. 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 Si4355 both space efficient and cost effective. Excellent sensitivity of 116 dBm allows for a longer operating Patents pending range, while the low current consumption of 10 mA active 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 Si4355 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 Si4355 is fully compliant with all worldwide regulatory standards, such as FCC, ETSI, and ARIB. Rev 1.0 7/12 Copyright 2012 by Silicon Laboratories Si4355 Not Recommended for New Designs VDD GPIO3 VDD GPIO2 GND XIN GPIO0 XOUTSPI Interface Controller Si4355 Functional Block Diagram GPIO3 GPIO2 XIN XOUT Synthesizer SDN 25-32MHz XO Rx Chain nSEL SDI RXp PGA LNA ADC Rx Modem SDO RXn SCLK nIRQ Battery Voltage Aux ADC GPIO1 Sensor VDD GPIO0 2 Rev 1.0 Not Recommended for New Designs