MAX3679A Ver la hoja de datos (PDF) - Microsemi Corporation
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Fabricante
MAX3679A Datasheet PDF : 12 Pages
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+3.3V, Low-Jitter Crystal to LVPECL
Clock Generator
Typical Operating Characteristics
(Typical values are at VCC = +3.3V, TA = +25°C, crystal frequency = 25MHz.)
SUPPLY CURRENT
vs. TEMPERATURE
250
225
200
175 ALL OUTPUTS ACTIVE AND TERMINATED
150
125
100 ALL OUTPUTS ACTIVE AND UNTERMINATED
75
50
25
0
-40 -15
10
35
60
85
AMBIENT TEMPERATURE (°C)
DIFFERENTIAL OUTPUT WAVEFORM
AT 156.25MHz (LVPECL OUTPUT)
MAX3679A toc02
1ns/div
OUTPUT WAVEFORM AT 125MHz
(LVCMOS OUTPUT)
MAX3679A toc03
MEASURED USING 50Ω OSCILLOSCOPE INPUT
THROUGH NETWORK SHOWN IN FIGURE 1
1ns/div
-80
-90
-100
-110
-120
-130
-140
-150
-160
0.1
PHASE NOISE AT 312.5MHz
CLOCK FREQUENCY
1 10 100 1000 10,000 100,000
OFFSET FREQUENCY (kHz)
JITTER HISTOGRAM (312.5MHz OUTPUT,
40mVP-P SUPPLY NOISE AT 100kHz)
MAX3679A toc06
DJ = 5.0psP-P
5ps/div
-80
-90
-100
-110
-120
-130
-140
-150
-160
0.1
PHASE NOISE AT 125MHz
CLOCK FREQUENCY
1 10 100 1000 10,000 100,000
OFFSET FREQUENCY (kHz)
NOISE SPUR AMPLITUDE
vs. NOISE FREQUENCY
0
fC = 156.25MHz
-10 NOISE AMPLITUDE = 40mVP-P
-20
-30
-40
-50
-60
-70
-80
-90
10
100
1000
NOISE FREQUENCY (kHz)
10,000
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