Single-ended universal ISM band receiving technology based on Si4313

This article introduces the main features of Si4313, functional block diagram, application case diagram and reference test board circuit diagram.

Silabs' Si4313 is a single-ended general-purpose ISM band receiver with an operating frequency of 240–960 MHz, a sensitivity of –118 dBm, and a data rate of 0.2-128 kbps. It uses FSK, GFSK, and OOK modulation schemes. The power supply voltage is 1.8 to 3.6 V, which is mainly used The remote control, health monitors, weather stations and personal data records.

Si4313 main features:

Frequency range = 240–960 MHz

SensiTIvity = –118 dBm
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Low power consumpTIon
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Data rate = 0.2 to 128 kbps
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FSK, GFSK, and OOK modulaTIon schemes
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Power supply = 1.8 to 3.6 V
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Ultra low power shutdown mode
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Digital RSSI
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Wake-up TImer
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Auto Frequency Calibration (AFC)
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Clear channel assessment
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Programmable RX BW 2.6–620 kHz
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Preamble detector
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RX 64 byte FIFO
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–40 to + 85 ℃ temperature range
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Integrated voltage regulators
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Frequency hopping capability
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On-chip crystal tuning
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20-pin QFN package
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Low BOM
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Single capacitor matching network
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Power-On-Reset (POR)
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Single-ended antenna Configuration

Si4313 application:

Remote control

Weather station

Personal data logging

Health monitors

figure 1. Si4313 functional block diagram

figure 2. Si4313 application case diagram

image 3. Si4313 reference test board circuit diagram

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