基于LTC5588-1設(shè)計(jì)的0.2-6GHz直接變換調(diào)制解決
本文介紹了LTCR5588-1主要特性,方框圖,基帶和5階濾波器和0.5VCM DAC接口電路圖以及應(yīng)用電路和評(píng)估板電路圖與元件布局圖。Linear 公司的LTC5588-1是 0.2-6GHz高性能直接變換I/Q調(diào)制器,采用差分基帶I和Q信號(hào)直接調(diào)制RF信號(hào),支持LTE, GSM, EDGE, TD-SCDMA, CDMA, CDMA2000, W-CDMA, WiMax和其它通信標(biāo)準(zhǔn)。在2140MHz時(shí)的輸出IP3為+31dBm,50歐姆單端LO和RF端口,3.3V工作,主要用在LTE, GSM/EDGE, W-CDMA, TD-SCDMA, CDMA2K和 WiMax 基站,鏡像抑制上變換器,點(diǎn)對(duì)點(diǎn)微波鏈接,廣播調(diào)制器和軍用無(wú)線電。
LTCR5588-1主要特性:
Frequency Range: 200MHz to 6000MHz
Output IP3: +31dBm Typical at 2140MHz (Uncalibrated) +35dBm Typical (User Optimized)
Single Pin Calibration to Optimize OIP3
Low Output Noise Floor at 6MHz Offset:
No RF:–160.6dBm/Hz
POUT = 5dBm: –155.5dBm/Hz
Integrated LO Buffer and LO Quadrature Phase Generator
High Impedance DC Interface to Baseband Inputs with 0.5V Common Mode Voltage*
50Ω Single-Ended LO and RF Ports
3.3V Operation
Fast Turn-Off/On: 10ns/17ns
24-Lead UTQFN 4mmx?4mm Package
應(yīng)用:
LTE, GSM/EDGE, W-CDMA, TD-SCDMA, CDMA2K, WiMax Basestations
Image Reject Upconverters
Point-to-Point Microwave Links
Broadcast Modulator
Military Radio
圖1。LTCR5588-1方框圖
圖2。LTCR5588-1簡(jiǎn)化電路圖(僅表示1路)
圖3。LTCR5588-1基帶和5階濾波器和0.5VCM DAC接口電路圖(僅表示1路)
圖4。LTCR5588-1 200MHz-6GHz直接變換發(fā)送器應(yīng)用電路圖
圖5。LTCR5588-1評(píng)估板電路圖
圖6。LTCR5588-1評(píng)估板元件面布局圖
評(píng)論