AD9577BCPZ-R7 datasheet(24/44 Pages) AD

tên linh kiện	AD9577BCPZ-R7

Giải thích chi tiết về linh kiện	Clock Generator with Dual PLLs, Spread Spectrum, and Margining

PDF	44 Pages

Scroll/Zoom	100%

nhà sản xuất	AD [Analog Devices]

Trang chủ	http://www.analog.com

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24 / 44 page

AD9577

Data Sheet

Rev. A | Page 24 of 44

TYPICAL SPREAD SPECTRUM PERFORMANCE CHARACTERISTICS

100.1

100.0

99.4

99.5

99.6

99.7

99.8

99.9

TIME (10µs/DIV)

Figure 29. Typical Spread Spectrum Frequency Modulation Profile OUT2,

Nb = 96, FRAC = 0, MOD = 1000, CkDiv = 7, NumSteps = 59, FracStep = −8,

fOUT = 100 MHz with −0.5% Downspread at 30.2 kHz, MAX_BW set to 0

–10

–20

–80

–70

–60

–50

–40

–30

99.00

100.50

100.25

100.00

99.75

99.50

99.25

FREQUENCY (MHz)

UNMODULATED

CLOCK SPECTRUM

MODULATED

CLOCK

Figure 30. Typical Nonspread and Spread Spectrum Power Spectra, OUT2,

Nb = 96, FRAC = 0, MOD = 1000, CkDiv = 7, NumSteps = 59, FracStep = −8,

fOUT = 100 MHz with −0.5% Downspread at 30.2 kHz, MAX_BW set to 0,

First Harmonic Shown, Spectrum Analyzer Resolution Bandwidth =10 kHz,

Maximum Hold On

–10

–20

–90

–80

–70

–60

–50

–40

–30

695

701

699

697

FREQUENCY (MHz)

Figure 31. Typical Nonspread and Spread Spectrum Power Spectra, OUT2,

Nb = 96, FRAC = 0, MOD = 1000, CkDiv = 7, NumSteps = 59, FracStep = −8,

fOUT = 100 MHz with −0.5% Downspread at 30.2 kHz, MAX_BW set to 0,

Seventh Harmonic Shown, Spectrum Analyzer Resolution Bandwidth =

120 kHz, Maximum Hold On

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