AD9577BCPZ-R7(Rev0) Просмотр технического описания (PDF) - Analog Devices

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AD9577BCPZ-R7
(Rev.:Rev0)

Clock Generator with Dual PLLs, Spread Spectrum, and Margining

Analog Devices 

AD9577

Data Sheet

PLL2 FRACTIONAL-N MODE CHARACTERISTICS

Table 3. Bleed = 1

Parameter

NOISE CHARACTERISTICS

Phase Noise (155.52 MHz LVPECL Output)

@ 1 kHz

@ 10 kHz

@ 100 kHz

@ 1 MHz

@ 10 MHz

@ 30 MHz

Phase Noise (622.08 MHz LVPECL Output)

@ 1 kHz

@ 10 kHz

@ 100 kHz

@ 1 MHz

@ 10 MHz

@ 30 MHz

Phase Noise (155.52 MHz LVDS Output)

@ 1 kHz

@ 10 kHz

@ 100 kHz

@ 1 MHz

@ 10 MHz

@ 30 MHz

Phase Noise (622.08 MHz LVDS Output)

@ 1 kHz

@ 10 kHz

@ 100 kHz

@ 1 MHz

@ 10 MHz

@ 30 MHz

Phase Noise (155.52 MHz CMOS Output)

@ 1 kHz

@ 10 kHz

@ 100 kHz

@ 1 MHz

@ 10 MHz

@ 30 MHz

SPREAD SPECTRUM

Modulation Range

Modulation Frequency

Peak Power Reduction

Min Typ Max Unit Test Conditions/Comments1

25 MHz crystal used

Nb = 87, FRAC = 57, MOD = 625, Vx = 2, Dx = 7

−107

dBc/Hz

−115

dBc/Hz

−122

dBc/Hz

−146

dBc/Hz

−153

dBc/Hz

−152

dBc/Hz

Nb = 99, FRAC = 333, MOD = 625, Vx = 2, Dx = 2

−95

dBc/Hz

−103

dBc/Hz

−109

dBc/Hz

−133

dBc/Hz

−148

dBc/Hz

−150

dBc/Hz

Nb = 87, FRAC = 57, MOD = 625, Vx = 2, Dx = 7

−107

dBc/Hz

−114

dBc/Hz

−122

dBc/Hz

−145

dBc/Hz

−154

dBc/Hz

−154

dBc/Hz

Nb = 99, FRAC = 333, MOD = 625, Vx = 2, Dx = 2

−95

dBc/Hz

−103

dBc/Hz

−109

dBc/Hz

−132

dBc/Hz

−147

dBc/Hz

−149

dBc/Hz

Nb = 87, FRAC = 57, MOD = 625, Vx = 2, Dx = 7

−107

dBc/Hz

−114

dBc/Hz

−122

dBc/Hz

−146

dBc/Hz

−154

dBc/Hz

−154

dBc/Hz

+0.1

−0.5 %

31.25

kHz

10

dB

Downspread, triangle modulation profile

Programmable

First harmonic of 100 MHz output, triangle modulation

profile, spectrum analyzer resolution bandwidth = 20 kHz

1 x indicates either 2 or 3 for any given test condition.

Rev. 0 | Page 6 of 44

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