AD8347-EVAL開(kāi)發(fā)板套件編程器的射頻評(píng)估開(kāi)發(fā)套件開(kāi)發(fā)板規(guī)格書(shū)PDF中文資料

AD8347-EVAL屬于開(kāi)發(fā)板套件編程器的射頻評(píng)估開(kāi)發(fā)套件開(kāi)發(fā)板。由亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD8347-EVAL射頻評(píng)估和開(kāi)發(fā)套件，開(kāi)發(fā)板本系列中的產(chǎn)品適用于在已知實(shí)施環(huán)境中，提供能訪問(wèn)射頻相關(guān)器件的功能或者有助于訪問(wèn)該功能。所含的焦點(diǎn)產(chǎn)品范圍從射頻信號(hào)鏈元器件（如放大器和檢測(cè)器）到模塊化收發(fā)器，以及不直接包含焦點(diǎn)產(chǎn)品的適配器硬件，但此類(lèi)硬件可供方便地訪問(wèn)用戶單獨(dú)提供的特定射頻產(chǎn)品或系列。

GENERAL DESCRIPTION

The AD8347 is a broadband direct quadrature demodulator with RF and baseband automatic gain control (AGC) amplifiers. It is suitable for use in many communications receivers, performing

quadrature demodulation directly to baseband frequencies. The input frequency range is 800 MHz to 2.7 GHz. The outputs can be connected directly to popular A-to-D converters such as the

AD9201and AD9283. The RF input signal goes through two stages of variable gain amplifiers prior to two Gilbert-cell mixers. The LO quadrature phase splitter employs polyphase filters to achieve high quadrature accuracy and amplitude balance over the entire operating frequency range. Separate I and Q channel variable gain amplifiers follow the baseband outputs of the mixers. The

RF and baseband amplifiers together provide 69.5 dB of gain control. A precision control circuit sets the linear-in-dB RF gain response to the gain control voltage.

FEATURES

Integrated RF and baseband AGC amplifiers

Quadrature phase accuracy 1° typ

I/Q amplitude balance 0.3 dB typ

Third-order intercept (IIP3) +11.5 dBm @ min gain

Noise figure 11 dB @ max gain

AGC range 69.5 dB

Baseband level control circuit

Low LO drive ?8 dBm

ADC-compatible I/Q outputs

Single supply 2.7 V to 5.5 V

Power-down mode

28-lead TSSOP package

APPLICATIONS

Cellular base stations

Radio links

Wireless local loop

IF broadband demodulators

RF instrumentation

Satellite modems