参数资料
型号: MPC93H52FAR2
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 时钟及定时
英文描述: PLL BASED CLOCK DRIVER, 11 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32
封装: LQFP-32
文件页数: 12/16页
文件大小: 285K
代理商: MPC93H52FAR2
MPC93H52
MOTOROLA
3.3V 1:11 LVCMOS Zero Delay Clock Generator
5
Table 6. AC CHARACTERISTICS (VCC = 3.3 V ± 5%, TA = 0° to 70°C)a
a. AC characteristics apply for parallel output termination of 50
to V
TT
Symbol
Characteristics
Min
Typ
Max
Unit
Condition
fref
Input reference frequency
÷4 feedback
in PLL modeb c
÷6 feedback
÷8 feedback
÷12 feedback
Input reference frequency in PLL bypass moded
b. PLL mode requires PLL_EN=0 to enable the PLL and zero-delay operation.
c. The PLL may be unstable with a divide by 2 feedback ratio.
d. In PLL bypass mode, the MPC93H52 divides the input reference clock.
50.0
33.3
25.0
16.67
50.0
120.0
80.0
60.0
40.0
250.0
MHz
fVCO
VCO lock frequency rangee
e. The input frequency f
ref on CCLK must match the VCO frequency range divided by the feedback divider ratio FB: fref = fVCO ÷ FB.
200
480
MHz
fMAX
Output Frequency
÷2 outputf
÷4 output
÷6 output
÷8 output
÷12 output
f.
See Table 7 and Table 8 for output divider configurations.
100
50
33.3
25
16.67
240
120
80
60
40
MHz
tPWMIN Minimum Reference Input Pulse Width
2.0
ns
tr, tf
CCLK Input Rise/Fall Timeg
g. The MPC93H52 will operate with input rise and fall times up to 3.0 ns, but the AC characteristics, specifically t
(
), can only be guaranteed if tr/tf
are within the specified range.
1.0
ns
0.8 to 2.0V
t()
Propagation Delay CCLK to FB_IN
(fref = 50MHz)
(static phase offset)
–200
+200
ps
PLL locked
tsk(O)
Output-to-output Skewh
all outputs, any frequency
within QA output bank
within QB output bank
within QC output bank
h. See application section for part-to-part skew calculation.
300
200
100
ps
DC
Output duty cycle
45
50
55
%
tr, tf
Output Rise/Fall Time
0.1
1.0
ns
0.55 to 2.4V
tPLZ, HZ Output Disable Time
8
ns
tPZL, LZ Output Enable Time
10
ns
tJIT(CC) Cycle-to-cycle jitter
output frequencies mixed
all outputs same frequency
150
25
ps
RMS
tJIT(PER) Period Jitter
output frequencies mixed
all outputs same frequency
75
20
ps
RMS
tJIT() I/O Phase Jitteri
÷4 feedback divider RMS (1 σ)
÷6 feedback divider RMS (1 σ)
÷8 feedback divider RMS (1 σ)
÷12 feedback divider RMS (1 σ)
i.
See application section for a jitter calculation for other confidence factors than 1
σ.
40
ps
BW
PLL closed loop bandwidthj
÷4 feedback
÷6 feedback
÷8 feedback
÷12 feedback
j.
–3 dB point of PLL transfer characteristics.
2.0-8.0
1.0-4.0
0.8-2.5
0.6-1.5
MHz
tLOCK Maximum PLL Lock Time
10
ms
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