آر اف (فرکانس رادیویی) و بی‌سیم دمودولاتور آر اف

Product Attributes

Introduction

The ADRF6850 is a highly integrated broadband quadrature demodulator, frequency synthesizer, and variable gain amplifier (VGA). The device covers an operating frequency range from 100 MHz to 1000 MHz for use in both narrow-band and wideband communications applications, performing quadrature demodulation from IF directly to baseband frequencies. The ADRF6850 demodulator includes a high modulus fractional-N frequency synthesizer with integrated VCO, providing better than 1 Hz frequency resolution, and a 60 dB gain control range provided by a front-end VGA. Control of all the on-chip registers is through a user-selected SPI interface or I²C interface. The device operates from a single power supply ranging from 3.15 V to 3.45 V.

Features

• IQ quadrature demodulator
• Integrated fractional-N PLL and VCO
• Gain control range: 60 dB
• Input frequency range: 100 MHz to 1000 MHz
• Input P1dB: +12 dBm at 0 dB gain
• Input IP3: +22.5 dBm at 0 dB gain
• Noise figure: 11 dB at >39 dB gain, 49 dB at 0 dB gain
• Baseband 1 dB bandwidth: 250 MHz in wideband mode, 50 MHz in narrow-band mode
• SPI/I²C serial interface
• Power supply: +3.3 V/350 mA

Applications

• Broadband communications
• Cellular communications
• Satellite communications