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SI4322 データシート(PDF) 1 Page - Silicon Laboratories |
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SI4322 データシート(HTML) 1 Page - Silicon Laboratories |
1 / 22 page DESCRIPTION Silicon Labs’s Si4322 is a single chip, low power, multi-channel FSK receiver designed for use in applications requiring FCC or ETSI conformance for unlicensed use in the 868 and 915 MHz bands. Used in conjunction with Silicon Labs’ FSK transmitters, the Si4322 is a flexible, low cost, and highly integrated solution that does not require production alignments. All required RF functions are integrated. Only an external crystal and bypass filtering is needed for operation. The Si4322 has a completely integrated PLL for easy RF design, and its rapid settling time allows for fast frequency hopping, bypassing multipath fading, and interference to achieve robust wireless links. The PLL’s high resolution allows the usage of multiple channels in any of the bands. The baseband bandwidth (BW) is programmable to accommodate various deviation, data rate, and crystal tolerance requirements. The receiver employs the Zero-IF approach with I/Q demodulation, therefore no external components (except crystal and decoupling) are needed in a typical application. The Si4322 is a complete analog RF and baseband receiver including a multi-band PLL synthesizer with an LNA, I/Q down converter mixers, baseband filters and amplifiers, and I/Q demodulator. The chip dramatically reduces the load on the microcontroller with integrated digital data processing: data filtering, clock recovery, data pattern recognition and integrated FIFO. The automatic frequency control (AFC) feature allows using a low accuracy (low cost) crystal. To minimize the system cost, the chip can provide a clock signal for the microcontroller, avoiding the need for two crystals. Si4322 Universal ISM Band FSK Receiver www.silabs.com PIN ASSIGNMENT PIN ASSIGNMENT PIN ASSIGNMENT PIN ASSIGNMENT PIN ASSIGNMENT FEATURES • Fully integrated (low BOM, easy design-in) • No alignment required in production • Fast settling, programmable, high-resolution PLL • Fast frequency hopping capability • High bit rate (up to 115.2 kbps in digital mode and 256 kbps in analog mode) • Direct differential antenna input • Programmable baseband bandwidth (134 to 400 kHz) • Analog and digital RSSI outputs • Automatic frequency control (AFC) • Data quality detection (DQD) • Internal data filtering and clock recovery • RX pattern recognition • SPI compatible serial control interface • Clock and reset signals for microcontroller • 48 bit RX data FIFO • Standard 10 MHz crystal reference • Wake-up timer • Low battery detector • 2.2 to 3.8 V supply voltage • Low power consumption • Low standby current (typ. 0.3 μA) TYPICAL APPLICATIONS • Remote control • Home security and alarm • Wireless keyboard/mouse and other PC peripherals • Toy control • Remote keyless entry • Tire pressure monitoring • Telemetry • Personal/patient data logging • Remote automatic meter reading Si4322-DS rev 1.1r 0308 Si4322 1 2 4 5 3 6 7 8 16 15 13 12 14 11 10 9 SDI SCK nSEL SDO / FFIT nIRQ DATA / nFFE DCLK / nFFS / CFIL CLK VDI ARSSI VDD IN1 IN2 VSS nRES XTL / REF IA4322 Low Power parts Data processing units BB Amp/Filt./Limiter RF Parts AMP OC AMP OC I/Q Demod. LNA MIX I Q MIX Data Filt CLK Rec data clk DQD COMP RSSI AFC PLL & I/Q VCO with cal. Controller Xosc Self cal. LBD WTM with cal. CLK div Bias 13 IN1 IN2 12 8 9 CLK XTL 16 15 VDI ARSSI 2 3 4 5 11 SCK nSEL SDO nIRQ 14 1 VSS VDD SDI 7 6 DCLK DATA FIFO 10 nRES FUNCTIONAL BLOCK DIAGRAM This document refers to Si4322-IC Rev A0. See www.silabs.com/integration for any applicable errata. See back page for ordering information. 123456789 123456789 123456789 123456789 123456789 |
同様の部品番号 - SI4322 |
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同様の説明 - SI4322 |
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