FS6245 Ver la hoja de datos (PDF) - AMI Semiconductor
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FS6245 Datasheet PDF : 8 Pages
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FS6245
Dual PLL VCXO Clock Generator IC
Table 6: AC Timing Specifications
Unless otherwise stated, VDD = 5V ± 10%, no load on any output, and ambient temperature range TA = 0°C to 70°C. Parameters denoted with an asterisk ( * ) represent nominal characterization data
and are not production tested to any specific limits. Where given, MIN and MAX characterization data are ± 3σ from typical.
PARAMETER
SYMBOL
CONDITIONS/DESCRIPTION
MIN. TYP. MAX. UNITS
Overall
VCXO Stabilization Time *
PLL Stabilization Time *
Output Frequency Synthesis Error
tVCXOSTB
tPLLSTB
From power valid
From VCXO stable
(unless otherwise noted in Frequency Table)
10
ms
500
us
0
ppm
Clock Output (CLK)
Duty Cycle *
Jitter, Period (peak-peak) *
Ratio of high pulse width (as measured from rising
edge to next falling edge at VDD/2) to one clock period
45
55
%
tj(∆P)
From rising edge to next rising edge at VDD/2, CL =
10pF
300
ps
Jitter, Long Term (σy(τ)) *
tj(LT)
From 0-500µs at VDD/2, CL = 10pF
compared to ideal clock source
150
ps
Rise Time *
Fall Time *
Rise Time *
Fall Time *
tr
VDD = 5V; VDDO = 3.3V; VO = 0.3V to 3.0V; CL = 10pF
1.8
ns
tf
VDD = 5V; VDDO = 3.3V; VO = 0.3V to 3.0V; CL = 10pF
1.4
ns
tr
VDD = 5V; VDDO = 5.0V; VO = 0.5V to 4.5V; CL = 10pF
1.4
ns
tf
VDD = 5V; VDDO = 5.0V; VO = 4.5V to 0.5V; CL = 10pF
1.25
ns
6
ISO9001
2.28.02
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