AD9540屬于集成電路（IC）的時鐘發(fā)生器PLL頻率合成器。由亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD9540時鐘發(fā)生器，PLL，頻率合成器時鐘發(fā)生器、PLL 和頻率合成器集成電路 (IC) 可為邏輯器件提供參考信號的穩(wěn)定定時脈沖，這些器件包括計算機、微控制器、數(shù)據(jù)通信系統(tǒng)和圖形/視頻發(fā)生器。這些集成電路可能包括緩沖器、驅(qū)動器、分頻器、倍頻器、多路復(fù)用器、合成器、扇出分配器和預(yù)分頻器。

PRODUCT OVERVIEW

The AD9540 is Analog Devices’ first dedicated clocking product specifically designed to support the extremely stringent clocking requirements of the highest performance data converters. The device features high performance PLL (phase-locked loop) circuitry, including a flexible 200 MHz phase frequency detector and a digitally controlled charge pump current. The device also provides a low jitter, 655 MHz CMLmode, PECL-compliant output driver with programmable slew rates. External VCO rates up to 2.7 GHz are supported.

FEATURES

Excellent intrinsic jitter performance

200 MHz phase frequency detector inputs

655 MHz programmable input dividers for the phase

frequency detector (÷M, ÷N) {M, N = 1 to 16} (bypassable)

Programmable RF divider (÷R) {R = 1, 2, 4, 8} (bypassable)

8 programmable phase/frequency profiles

400 MSPS internal DDS clock speed

48-bit frequency tuning word resolution

14-bit programmable phase offset

1.8 V supply for device operation

3.3 V supply for I/O, CML driver, and charge pump output

Software controlled power-down

48-lead LFCSP_VQ package

Programmable charge pump current (up to 4 mA)

Dual-mode PLL lock detect

655 MHz CML-mode PECL-compliant output driver

APPLICATIONS

Clocking high performance data converters

Base station clocking applications

Network (SONET/SDH) clocking

Gigabit Ethernet (GbE) clocking

Instrumentation clocking circuits

Agile LO frequency synthesis

Automotive radar

FM chirp source for radar and scanning systems

Test and measurement equipment

Acousto-optic device drivers