AD9577BCPZ-R7屬于集成電路（IC）的應(yīng)用特定時(shí)鐘/定時(shí)。由亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD9577BCPZ-R7應(yīng)用特定時(shí)鐘/定時(shí)專用時(shí)鐘和計(jì)時(shí) IC（集成電路）產(chǎn)品族中的產(chǎn)品主要用于執(zhí)行與時(shí)間或頻率信息生成和分配相關(guān)的各種操作，適合的設(shè)計(jì)環(huán)境較特定，例如 AMD 和 Intel 的中央處理單元 (CPU) 或圖形處理單元 (GPU)、DVD 音頻設(shè)備、藍(lán)光光盤播放器、以太網(wǎng)設(shè)備、PCIe、SATA、光纖通道接口、車載娛樂總線等。

GENERAL DESCRIPTION

The AD9577 provides a multioutput clock generator function, along with two on-chip phase-locked loop cores, PLL1 and PLL2, optimized for network clocking applications. The PLL designs are based on the Analog Devices, Inc., proven portfolio of high performance, low jitter frequency synthesizers to maximize network performance. The PLLs have I2C programmable output frequencies and formats. The fractional-N PLL can support spread spectrum clocking for reduced EMI radiated peak power. Both PLLs can support frequency margining. Other applications with demanding phase noise and jitter requirements can benefit from this part.

FEATURES

Fully integrated dual PLL/VCO cores

1 integer-N and 1 fractional-N PLL

Continuous frequency coverage from 11.2 MHz to 200 MHz

Most frequencies from 200 MHz to 637.5 MHz available

PLL1 phase jitter (12 kHz to 20 MHz): 460 fs rms typical

PLL2 phase jitter (12 kHz to 20 MHz)

Integer-N mode: 470 fs rms typical

Fractional-N mode: 660 fs rms typical

Input crystal or reference clock frequency

Optional reference frequency divide-by-2

I2C programmable output frequencies

Up to 4 LVDS/LVPECL or up to 8 LVCMOS output clocks

1 CMOS buffered reference clock output

Spread spectrum: downspread [0, ?0.5]

2 pin-controlled frequency maps: margining

Integrated loop filters

Space saving, 6 mm × 6 mm, 40-lead LFCSP package

1.02 W power dissipation (LVDS operation)

1.235 W power dissipation (LVPECL operation)

3.3 V operation

APPLICATIONS

Low jitter, low phase noise multioutput clock generator for

data communications applications including Ethernet,

Fibre Channel, SONET, SDH, PCI-e, SATA, PTN, OTN,

ADC/DAC, and digital video

Spread spectrum clocking