Silabs Si4312 OOK CMOS RF接收器方案

Silabs 公司的Si4312 是全集成OOK CMOS RF接收器，工作在无许可证的315MHz-433.92MHz UHF频段。可选择的载波频率315/433.92 MHz，支持OOK调制，支持具16MHz晶振，有高的灵敏度–110 dBm @ 1.0 kbps，数据速率高达10 kbps NRZ，主要用在卫星STB接收器，遥控，IR替代，车库和门开启，无钥匙进入，无线POS和玩具等。本文介绍了Si4312主要特性，方框图，功能方框图，OOK 433.92 MHz应用电路图与材料清单（BOM）以及Si4312-DEMO板主要特性，电路图和Si4312-DEMO板材料清单。
The Si4312 is a fully-integrated OOK CMOS RF receiver that operates in the unlicensed 315 and 433.92 MHz ultra high frequency (UHF) bands. It is designed for high-volume, cost-sensitive RF receiver applications, such as set-top box RF receivers, remote controls, garage door openers, home automation, security, remote keyless entry systems, wireless POS, and telemetry. The Si4312 offers industry-leading RF performance, high integration, flexibility, low BOM, small board area, and ease of design. No production alignment is necessary as all RF functions are integrated into the device.
Si4312主要特性:
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Single chip receiver with only six external components
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Selectable 315/433.92 MHz carrier frequency
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Supports OOK modulation
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High sensitivity (–110 dBm @ 1.0 kbps)
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Frequency scanning
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Excellent interference rejection
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Data rates up to 10 kbps NRZ (5 kbps Manchester)
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Direct battery operation with onchip low drop out (LDO) voltage regulator
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16 MHz crystal oscillator support
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3x3x0.85 mm 20L QFN package (RoHS compliant)
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–40 to +85℃ temperature range
Si4312应用:
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Satellite set-top box receivers
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Remote controls, IR replacement/extension
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Garage and gate door openers
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Home automation and security
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Remote keyless entry
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After market alarms
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Telemetry
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