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ICC09-328-396C

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Si4320 Universal ISM Band FSK Receiver Si4320 PIN ASSIGNMENT DESCRIPTION Silicon Labs’ Si4320 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 315, 433, 868, and 915 MHz bands. Used in conjunction with Si4220/21, Silicon Labs’ FSK transmitters, the Si4320 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 are needed for operation. The Si4320 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 Si4320 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. For simple applications, the receiver supports a standalone operation mode. This allows complete data receiver operation and control of four digital outputs based on the incoming data pattern without a microcontroller. In this mode, 12 or more predefined frequency channels can be used in any of the four bands. For low power applications, the device supports low duty-cycle operation based on the internal wake-up timer. FUNCTIONAL BLOCK DIAGRAM Standalone Mode Microcontroller Mode This document refers to Si4320-IC Rev J1. See www.silabs.com/integration for any applicable errata. See back page for ordering information. 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 (67 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 16 bit RX data FIFO Standalone operation mode without microcontroller Low power duty-cycle mode (less than 0.5 mA average supply current) Standard 10 MHz crystal reference with in circuit calibration Alternative OOK support Wake-up timer Low battery detector 2.2 to 5.4 V supply voltage Low power consumption (~9 mA in low bands) Low standby current (0.3 µA) Compact 16-pin TSSOP package 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 1 Si4320-DS Rev 1.5r 0308 www.silabs.com

ブランド

KEL

会社名

ケル株式会社

本社国名

日本

事業概要

コネクタを作り続けて50年、コネクタ業界の最先端を牽引し、安心と信頼の技術を追求し続けてきたメーカーです。

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