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SI4438-c规格书
资料介绍
si4438。可以用来控制频率433M.成本便宜，好用。控制简单，适合选用控制433电机
部分文件列表
| 文件名 | 大小 |
| C409764_SI4438-B1C-FMR_2019-08-07.PDF | 1M |
部分页面预览
（完整内容请下载后查看）Si4438-C
HIGH-PERFORMANCE, LOW-CURRENT TRANSCEIVER
Features
Frequency
Excellent selectivity performance
range = 425–525 MHz
58 dB adjacent channel
75 dB blocking at 1 MHz
Antenna diversity and T/R switch
control
Receive sensitivity = –124 dBm
Modulation
(G)FSK
OOK
Highly configurable packet handler
TX and RX 64 byte FIFOs
Auto frequency control (AFC)
Automatic gain control (AGC)
Low BOM
Max output power
+20 dBm
Low active power consumption
14 mA RX
Ultra low current powerdown
modes
30 nA shutdown, 40 nA standby
Data rate = 100 bps to 500 kbps
Low battery detector
Pin Assignments
Temperature sensor
20-Pin QFN package
IEEE 802.15.4g ready
Preamble Sense Mode
Suitable for China regulatory (State
6 mA average Rx current at
Grid)
1.2 kbps
Fast wake and hop times
Power supply = 1.8 to 3.8 V
Applications
China smart meters
Description
Silicon Laboratories' Si4438 is
a
high-performance, low-current
Patents pending
transceivers covering the sub-GHz frequency bands from 425 to
525 MHz. The Si4438 is targeted at the Chinese smart meter market and
is especially suited for electric meters. This device is footprint- and
pin-compatible with the Si446x radios, which provide industry-leading
performance for worldwide sub-GHz applications. The radios are part of
®
the EZRadioPRO family, which includes a complete line of transmitters,
receivers, and transceivers covering a wide range of applications. All
parts offer outstanding sensitivity of –124 dBm while achieving extremely
low active and standby current consumption. The 58 dB adjacent channel
selectivity with 12.5 kHz channel spacing ensures robust receive
operation in harsh RF conditions. The Si4438 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 144 dB
allowing extended ranges and highly robust communication links.
Rev 1.0
Copyright © 2014 by Silicon Laboratories
Si4438-C
Si4438-C
Functional Block Diagram
Product
Freq. Range
Max Output
Power
TX Current
RX Current
Si4438
425–525 MHz
+20 dBm
75 mA
13.7 mA
2
Rev 1.0
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