參數(shù)資料
型號(hào): MPC93H51AC
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 時(shí)鐘及定時(shí)
英文描述: 93H SERIES, PLL BASED CLOCK DRIVER, 9 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32
封裝: 7 X 7 MM, LEAD FREE, LQFP-32
文件頁數(shù): 8/12頁
文件大?。?/td> 329K
代理商: MPC93H51AC
Advanced Clock Drivers Device Data
Freescale Semiconductor
5
MPC93H51
Table 6. AC Characteristics (VCC = 3.3 V ± 5%, TA = 0° to 70°C)(1)
1. AC characteristics apply for parallel output termination of 50
to VTT.
Symbol
Characteristics
Min
Typ
Max
Unit
Condition
fref
Input Frequency(2)
÷ 4 feedback
÷ 8 feedback
Static test mode
2. The PLL will be unstable with a divide by 2 feedback ratio.
50
25
0
120
60
300
MHz
PLL_EN = 1
PLL_EN = 0
fVCO
VCO Frequency
200
480
MHz
fMAX
Maximum Output Frequency(2)
÷ 2 output
÷ 4 output
÷ 8 output
100
50
25
240
120
60
MHz
frefDC
Reference Input Duty Cycle
25
75
%
VPP
Peak-to-Peak Input Voltage
PCLK, PCLK
500
1000
mV
LVPECL
VCMR
(3)
3. VCMR (AC) is the crosspoint of the differential input signal. Normal AC operation is obtained when the crosspoint is within the VCMR range
and the input swing lies within the VPP (AC) specification. Violation of VCMR or VPP impacts static phase offset t().
Common Mode Range
PCLK, PCLK
1.2
VCC-0.9
V
LVPECL
tr, tf
(4)
4. The MPC93H51 will operate with input rise/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.
TCLK Input Rise/Fall Time
1.0
ns
0.8 to 2.0 V
t()
Propagation Delay (static phase offset)
TCLK to EXT_FB
PCLK to EXT_FB
–150
0
+150
+250
ps
PLL locked
tsk(o)
Output-to-Output Skew
300
ps
DC
Output Duty Cycle
100 – 240 MHz
50 – 120 MHz
25 – 60 MHz
45
47.5
48.75
50
55
52.5
51.75
%
tr, tf
Output Rise/Fall Time
0.1
1.0
ns
0.55 to 2.4 V
tPLZ, HZ Output Disable Time
7.0
ns
tPZL, ZH Output Enable Time
6.0
ns
BW
PLL closed loop bandwidth
÷ 2 feedback
÷ 4 feedback
÷ 8 feedback
9.0 – 20.0
3.0 – 9.5
1.2 – 2.1
MHz
-3 db point of
PLL transfer
characteristic
tJIT(CC) Cycle-to-cycle jitter
÷ 4 feedback
Single Output Frequency Configuration
40
ps
RMS value
tJIT(PER) Period Jitter
÷ 4 feedback
Single Output Frequency Configuration
25
ps
RMS value
tJIT()
I/O Phase Jitter
30
ps
RMS value
tLOCK
Maximum PLL Lock Time
5
ms
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