Si4468/7 HIGH-PERFORMANCE, LOW-CURRENT TRANSCEIVER Features Frequency range = 1421050 MHz Fast wake and hop times Receive sensitivity = 133 dBm Power supply = 1.8 to 3.8 V 100 bps plus fast-scanning AFC for Excellent selectivity performance standard TCXO applications 69 dB adjacent channel Modulation 79 dB blocking at 1 MHz (G)FSK, 4(G)FSK, (G)MSK Antenna diversity and T/R switch control OOK Highly configurable packet handler Max output power TX and RX 64 byte FIFOs +20 dBm (Si4468) 129 bytes dedicated Tx or Rx FIFO +13 dBm (Si4467) Auto frequency control (AFC) PA support for +27 or +30 dBm Automatic gain control (AGC) Low active power consumption Low BOM 10/13 mA RX Low battery detector 18 mA TX at +10 dBm (Si4467) Temperature sensor Ultra low current powerdown modes 20-Pin QFN package 30 nA shutdown, 40 nA standby Sub-GHz 802.15.4 mesh network ready Pin Assignments Preamble sense mode IEEE 802.15.4g, and WMBus compliant 6 mA average RX current at Suitable for FCC Part 90 Mask D, FCC 1.2 kbps part 15.247, 15,231, 15,249, ARIB T-108, 10 A average RX current at T-96, T-67, RCR STD-30, China 50 kbps and 1 sec sleep interval regulatory Fast preamble detection ETSI Category I Operation 20 19 18 17 SDN 1 16 1 byte preamble detection EN 300 220 Data rate = 100 bps to 1 Mbps RXp 2 15 nSEL Applications RXn 3 14 SDI GND PAD Smart metering (802.15.4g and WMBus) Ultra narrowband, long range TX 4 13 SDO 802.15.4 mesh networking applications NC 5 12 SCLK Home security and alarm Industrial control Telemetry Sensor networks 6 11 nIRQ 7 8 9 10 Garage and gate openers Health monitors Star and point-to-point networks Electronic shelf labels Low power wireless sensor Home automation nodes Description Patents pending Silicon Laboratories Si446x devices are high-performance, low-current transceivers covering the sub-GHz frequency bands from 142 to 1050 MHz. The radios are part of the EZRadioPRO family, which includes a complete line of transmitters, receivers, and transceivers covering a wide range of applications. A high level of integration including support for IEEE 802.15.4 features enables standards based sub GHz networking solutions. All parts offer outstanding sensitivity of 133 dBm while achieving extremely low active and standby current consumption. The Si4468/7 offers frequency coverage in all major bands. The Si446x includes optimal phase noise, blocking, and selectivity performance for narrow band and licensed band applications, such as FCC Part90 and 169 MHz wireless MBus. The 69 dB adjacent channel selectivity with 12.5 kHz channel spacing ensures robust receive operation in harsh RF conditions, which is particularly important for narrow band operation. The Si4468 offers exceptional output power of up to +20 dBm with outstanding TX efficiency. The high output power and sensitivity results in an industry-leading link budget of 155 dB allowing extended ranges and highly robust communication links. The Si4467 active mode TX current consumption of 18 mA at +10 dBm and RX current of 10 mA coupled with extremely low standby current and fast wake times ensure extended battery life in the most demanding applications. The Si4468 can achieve up to +27 dBm output power with built-in ramping control of a low-cost external FET. The devices can meet worldwide regulatory standards: FCC, ETSI, and ARIB. All devices are designed to be compliant with 802.15.4g and WMBus smart metering standards. The devices are highly flexible and can be configured via the Wireless Development Suite (WDS) available at www.silabs.com. Rev 1.0 10/14 Copyright 2014 by Silicon Laboratories Si4468/7 VDD GPIO3 TXRamp VDD GPIO2 GPIO0 GND XIN GPIO1 XOUTSPI Interface Controller Si4468/7 Functional Block Diagram GPIO3 GPIO2 XIN XOUT Loop PFD / CP Filter VCO 30 MHz XO FBDIV Frac-N Div LO Bootup TX DIV Gen OSC SDN IF RF PKDET PKDET nSEL MODEM RXP SDI FIFO LNA PGA ADC SDO Packet RXN Handler SCLK nIRQ LDOs PowerRamp TX PA Cntl POR Digital Logic LBD PA 32K LP LDO OSC TXRAMP VDD GPIO0 GPIO1 Product Freq. Range Max Output Power Ultra Narrow Band IEEE 802.15.4 / 4g Support Ready Si4468 Major bands +20 dBm 1421050 MHz Si4467 Major bands +13 dBm 1421050 MHz 2 Rev 1.0