AD9520-1 Ver la hoja de datos (PDF) - Analog Devices
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AD9520-1 Datasheet PDF : 84 Pages
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AD9520-1
CLOCK INPUTS
Table 3.
Parameter
CLOCK INPUTS (CLK, CLK)
Input Frequency
Min Typ Max Unit
01
2.4 GHz
01
1.6 GHz
Input Sensitivity, Differential
150
mV p-p
Input Level, Differential
2
V p-p
Input Common-Mode Voltage, VCM
Input Common-Mode Range, VCMR
Input Sensitivity, Single-Ended
Input Resistance
Input Capacitance
1.3 1.57 1.8 V
1.3
1.8 V
150
mV p-p
3.9 4.7 5.7 kΩ
2
pF
1 Below about 1 MHz, the input should be dc-coupled. Care should be taken to match VCM.
Test Conditions/Comments
Differential input
High frequency distribution (VCO divider)
Distribution only (VCO divider bypassed); this is the
frequency range supported by the channel divider
Measured at 2.4 GHz; jitter performance is improved with
slew rates > 1 V/ns
Larger voltage swings can turn on the protection diodes
and can degrade jitter performance
Self-biased; enables ac coupling
With 200 mV p-p signal applied; dc-coupled
CLK ac-coupled; CLK ac-bypassed to RF ground
Self-biased
CLOCK OUTPUTS
Table 4.
Parameter
LVPECL CLOCK OUTPUTS
OUT0, OUT1, OUT2, OUT3, OUT4,
OUT5, OUT6, OUT7, OUT8,
OUT9, OUT10, OUT11
Output Frequency, Maximum
Output High Voltage, VOH
Output Low Voltage, VOL
Output Differential Voltage, VOD
CMOS CLOCK OUTPUTS
OUT0A, OUT0B, OUT1A, OUT1B,
OUT2A, OUT2B, OUT3A, OUT3B,
OUT4A, OUT4B, OUT5A, OUT5B,
OUT6A, OUT6B, OUT7A, OUT7B,
OUT8A, OUT8B, OUT9A, OUT9B,
OUT10A, OUT10B, OUT11A,
OUT11B
Output Frequency
Output Voltage High, VOH
Output Voltage Low, VOL
Output Voltage High, VOH
Output Voltage Low, VOL
Output Voltage High, VOH
Output Voltage Low, VOL
Min
Typ
Max
Unit Test Conditions/Comments
Termination = 50 Ω to VS_DRV − 2 V
Differential (OUT, OUT)
2400
MHz Using direct to output; see Figure 21 (higher
frequencies are possible, but amplitude will
not meet the VOD specification); the maximum
output frequency is limited by either the
maximum VCO frequency or the frequency at
the CLK inputs, depending on the AD9520
configuration
VS_DRV − VS_DRV − VS_DRV − V
1.07
0.96
0.84
VS_DRV − VS_DRV − VS_DRV − V
1.95
1.79
1.64
660
820
950
mV
Single-ended; termination = 10 pF
VS − 0.1
2.7
1.8
250
MHz See Figure 22
V
@ 1 mA load, VS_DRV = 3.3 V/2.5 V
0.1
V
@ 1 mA load, VS_DRV = 3.3 V/2.5 V
V
@ 10 mA load, VS_DRV = 3.3 V
0.5
V
@ 10 mA load, VS_DRV = 3.3 V
V
@ 10 mA load, VS_DRV = 2.5 V
0.6
V
@ 10 mA load, VS_DRV = 2.5 V
Rev. 0 | Page 7 of 84
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