ADRF6806 50 MHz to 525 MHz Quadrature Demodulator with Fractional-N PLL and VCO

ADRF6806: 50 MHz to 525 MHz Quadrature Demodulator with Fractional-N PLL and VCO

ADRF6806 功能框图 The ADRF6806 is a high dynamic range IQ demodulator with integrated PLL and VCO. The fractional-N PLL/synthesizer generates a frequency in the range of 2.8 GHz to 4.2 GHz. A programmable quadrature divider (divide ratio = 4 to 80) divides the output frequency of the VCO down to the required local oscillator (LO) frequency to drive the mixers in quadrature. Additionally, an output divider (divide ratio = 4 to 8) generates a divided-down VCO signal for external use.

The PLL reference input is supported from 10 MHz to 160 MHz. The phase detector output controls a charge pump whose output is integrated in an off-chip loop filter. The loop filter output is then applied to an integrated VCO.The IQ demodulator mixes the differential RF input with the complex LO derived from the quadrature divider. The differential I and Q output paths have excellent quadrature accuracy and can handle baseband signaling or complex IF up to 120 MHz.

A reduced power mode of operation is also provided by programming the serial interface registers to reduce current consumption, with slightly degraded input linearity and output current drive.The ADRF6806 is fabricated using an advanced silicon-germanium BiCMOS process. It is available in a 40-lead, exposed-paddle, RoHS-compliant, 6 mm × 6 mm LFCSP package. Performance is specified over the −40°C to +85°C temperature range.

技术特性

IQ demodulator with integrated fractional-N PLL
LO frequency range: 50 MHz to 525 MHz
Quadrature demodulation accuracy
Phase accuracy: <0.5°
Amplitude accuracy: <0.1 dB
Baseband demodulation: 135 MHz, 3 dB bandwidth
For the following specifications (LPEN = 0)/(LPEN = 1):
Input P1dB: 12.2 dBm/10.6 dBm
Input IP3: 28.5 dBm/25.2 dBm
Noise figure (DSB): 12.2/11.4
Voltage conversion gain: 1 dB/4.2 dB
SPI serial interface for PLL programming
40-lead, 6 mm × 6 mm LFCSP

技术指标

IQ Freq (MHz): 135MHz
Phase Error (deg): 0.5Deg
Amplitude Error (dB): 0.1dB
OIP3 (+dBm): 28.5$ US
Noise Figure (dB): 12.2dB

应用领域

QAM/QPSK RF/IF demodulators
Cellular W-CDMA/CDMA/CDMA2000
Microwave point-to-(multi)point radios
Broadband wireless and WiMAX

订购指南

产品型号	封装	引脚	温度范围	包装和数量	报价*(100-499)	报价*1000 pcs	RoHS
ADRF6806ACPZ-R7 产品状态: 量产	LFCSP:LEADFRM CHIP SCALE	40	工业	Reel, 750	-	$ 9.98	Y 材料信息

开发工具

产品型号	描述	报价	RoHS
ADRF6806-EVALZ 产品状态: 量产	Evaluation Board	$ 0.00	是