Silicon Laboratories Si4455 Manual

E - - U
ASY TO SE
T
RANSCEIVER
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

Applications
Remote control

Home security and alarm

Telemetry

Garage and gate openers

Description
Silicon Laboratories' Si4455 is an easy-to-use, low current, sub-GHz
®
EZRadio transceiver.
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. The
Si4455 is capable of supporting major worldwide regulatory standards
such as FCC, ETSI, ARIB and China regulatory standards.
Rev 1.1 10/13
, L - C
O W URRENT
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

Remote keyless entry

Home automation

Industrial control

Sensor networks

Health monitors

Covering all major
Copyright © 2013 by Silicon Laboratories
OOK/(G)FSK S
bands, it combines
Si4455
-GH
UB
Pin Assignments
GND 1 20 19 18 17
SDN 2
RXp 3
Si4455
RXn 4
TX 5
GND 6 7 8 9 10
Patents pending
Z
16 nSEL
15 SDI
14 SDO
13 SCLK
12 nIRQ
11 GPIO1
Si4455