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Si4455
E ASY - TO - U SE , L O W - C URRENT OOK/(G)FSK S UB -GH Z
T RANSCEIVER
Features
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?
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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
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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
Pin Assignments
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?
Remote control
Home security and alarm
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Remote keyless entry
Home automation
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Telemetry
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Industrial control
GND
1
20
19
18
17
16 nSEL
?
Garage and gate openers
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Sensor networks
SDN
2
15 SDI
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Health monitors
Description
Silicon Laboratories’ Si4455 is an easy-to-use, low current, sub-GHz
RXp
RXn
TX
3
4
5
Si4455
14 SDO
13 SCLK
12 nIRQ
EZRadio ? transceiver. Covering all major bands, it combines
plug-and-play simplicity with the flexibility needed to handle a wide variety
GND
6
7
8
9
10
11 GPIO1
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
Patents pending
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
Copyright ? 2013 by Silicon Laboratories
Si4455
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