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SI4438-c规格书

更新时间：2020-01-03 11:35:24 大小：1M 上传用户：lifeng8888查看TA发布的资源 标签：si4438 下载积分：2分 评价赚积分 （如何评价?） 打赏 收藏 评论(0) 举报

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

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文件名 大小
C409764_SI4438-B1C-FMR_2019-08-07.PDF 1M

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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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