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Si4438

Silicon Laboratories
Part Number Si4438
Manufacturer Silicon Laboratories
Description LOW-CURRENT TRANSCEIVER
Published Oct 18, 2022
Detailed Description Si4438 HIGH-PERFORMANCE, LOW-CURRENT TRANSCEIVER Features  Frequency  Excellent selectivity performance range = 4...
Datasheet PDF File Si4438 PDF File

Si4438
Si4438

Overview
Si4438 HIGH-PERFORMANCE, LOW-CURRENT TRANSCEIVER Features  Frequency  Excellent selectivity performance range = 425–525 MHz 58 dB adjacent channel  Receive sensitivity = –124 dBm 75 dB blocking at 1 MHz  Modulation (G)FSK  Antenna diversity and T/R switch control OOK  Highly configurable packet handler  Max output power  TX and RX 64 byte FIFOs +20 dBm  Auto frequency control (AFC)  Low active power consumption  Automatic gain control (AGC) 14 mA RX  Low BOM  Ultra low current powerdown modes  Low battery detector  Temperature sensor    30 nA shutdown, 50 nA standby Data rate = 100 bps to 500 kbps Fast wake and hop times  Power supply = 1.
8 to 3.
6 V  20-Pin QFN package IEEE 802.
15.
4g ready China regulatory r Applications fo  China smart meters d Description e Silicon Laboratories' Si4438 is a high-performance, low-current transceivers covering the sub-GHz frequency bands from 425 to d 525 MHz.
The Si4438 is targeted at the Chinese smart meter market and n is especially suited for electric meters.
This device is footprint- and pin-compatible with the Si446x radios, which provide industry-leading e performance for worldwide sub-GHz applications.
The radios are part of the EZRadioPRO® family, which includes a complete line of transmitters, m receivers, and transceivers covering a wide range of applications.
All parts offer outstanding sensitivity of –124 dBm while achieving extremely m low active and standby current consumption.
The 58 dB adjacent channel selectivity with 12.
5 kHz channel spacing ensures robust receive o operation in harsh RF conditions.
The Si4438 offers exceptional output c 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 Not Re allowing extended ranges and highly robust communication links.
Designs NewPin Assignments SDN 1 20 19 18 17 16 GPIO3 GPIO2 GND XIN XOUT RXp 2 15 nSEL RXn 3 TX...


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