参数资料
型号: MPC9817EN
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 时钟产生/分配
英文描述: 66 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO20
封装: LEAD FREE, SSOP-20
文件页数: 5/8页
文件大小: 97K
代理商: MPC9817EN
Advanced Clock Drivers Devices
Freescale Semiconductor
5
MPC9817
Figure 3. MPC9817 AC Test Reference (LVCMOS Outputs)
Table 7. AC Characteristics(1) (2) (VDD = 3.3 V ± 5%, TA = –40° to +85°C)
1. AC characteristics are design targets and pending characterization.
2. AC characteristics apply for parallel output termination of 50
to V
TT.
Symbol
Characteristics
Min
Typ
Max
Unit
Condition
Input and Output Timing Specification
fref
Input Reference Frequency
25 MHz Input
XTAL Input
25
MHz
fVCO
VCO Frequency Range
400
MHz
fMCX
Output Frequency (QAx)
FSEL0, FSEL1 = 00
FSEL0, FSEL1 = 01
FSEL0, FSEL1 = 10
FSEL0, FSEL1 = 11
Output Frequency (QREFx)
25
33
50
66
25
MHz
PLL locked
frefPW
Reference Input Pulse Width
10
ns
@ 25 MHz
DC
Output Duty Cycle
47.5
50
52.5
%
fout
Output Frequency Accuracy
Crystal(3)
External Reference
3. Based upon recommended crystal specifications as outlined in operation section.
100
0
ppm
With recommended crystal
see Table 3
PLL Specifications
BW
PLL Closed Loop Bandwidth(4)
4. –3 dB point of PLL transfer characteristics.
500
kHz
tLOCK
Maximum PLL Lock Time
10
ms
Skew and Jitter Specifications
tsk(O)
Output-to-Output Skew (within a bank)
100
ps
tsk(O)
Output-to-Output Skew (between bank A and bank Ref)
200
FSEL0, FSEL1 = 00
tJIT(CC)
Cycle-to-Cycle Jitter
150
ps
@ 25 MHz Input Reference
QA output
tJIT(PER)
Period Jitter
100
ps
@ 25 MHz Input Reference
QA output
tr, tf
Output Rise/Fall Time
1
ns
20% to 80%
Z = 50
RT = 50
VTT
Z = 50
VTT
DUT MPC9817
Pulse
Generator
Z = 50
RT = 50
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