AD9857/PCB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AD9857/PCB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 AD9857 integrates a high speed direct digital synthesizer (DDS), a high performance, high speed, 14-bit digital-to-analog converter (DAC), clock multiplier circuitry, digital filters, and other DSP functions onto a single chip, to form a complete quadrature digital upconverter device. The AD9857 is intended to function as a universal I/Q modulator and agile upconverter, single-tone DDS, or interpolating DAC for communications applications, where cost, size, power dissipation, and dynamic performance are critical attributes.

FEATURES

200 MHz internal clock rate

14-bit data path

Excellent dynamic performance: 80 dB SFDR @ 65 MHz (±100 kHz) AOUT

4× to 20× programmable reference clock multiplier

Reference clock multiplier PLL lock detect indicator

Internal 32-bit quadrature DDS

FSK capability

8-bit output amplitude control

Single-pin power-down function

Four programmable, pin-selectable signal profiles

SIN(x)/x correction (inverse SINC function)

Simplified control interface 10 MHz serial, 2-wire or 3-wire SPI?-compatible

3.3 V single supply

Single-ended or differential input reference clock

80-lead LQFP surface-mount packaging

Three modes of operation: Quadrature modulator mode Single-tone mode Interpolating DAC mode

APPLICATIONS

HFC data, telephony, and video modems

Wireless base station

Agile, LO frequency synthesis

Broadband communications