參數(shù)資料
型號(hào): MPC9894
廠商: Electronic Theatre Controls, Inc.
英文描述: Quad Input Redundant IDCS Clock Generator
中文描述: 四路輸入冗余IDC機(jī)房,時(shí)鐘發(fā)生器
文件頁(yè)數(shù): 20/28頁(yè)
文件大小: 367K
代理商: MPC9894
Advanced Clock Drivers Devices
Freescale Semiconductor
20
MPC9894
Table 39. AC Characteristics (T
J
= –40°C to +110°C)
(1) (2)
Symbol
Characteristics
Min
Typ
Max
Unit
Condition
V
DD
= 3.3 V ±5%, V
DDAB,CD,IC
= 3.3 V ±5% or V
DDAB,CD,IC
= 2.5 V ±5%
Input and output timing specification
f
REF
Input reference frequency
Input reference frequency in PLL bypass mode
(3)
21.25
28.33
56.66
42.5
85.0
113.32
170
42.5
56.67
113.34
85
170
226.68
340
340
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
Input_FB_Div[3:0] = 0
Input_FB_Div[3:0] = 1
Input_FB_Div[3:0] = 2
Input_FB_Div[3:0] = 3,4
Input_FB_Div[3:0] = 6,7,8
Input_FB_Div[3:0] = 10
Input_FB_Div[3:0] = 14,15
PLL bypass
f
VCO
VCO frequency range
(4)
340
680
MHz
f
MAX
Output Frequency
÷
2 output
÷
4 output
÷
8 output
÷
16 output
170.0
85.0
42.5
21.25
340.0
170.0
85.0
42.5
MHz
MHz
MHz
MHz
PLL locked
f
REFDC
Reference Input Duty Cycle
40
60
%
f
REFacc
Input Frequency Accuracy
(5)
5000
±
1600
ppm
mae
(
)
Misaligned Edge Specification
±
600
ps
t
r
, t
f
Output Rise/Fall Time
800
ps
20% to 80%
DC
Output duty cycle
47.5
50
52.5
%
f
I2C
I
2
C frequency range
400
kHz
Differential input and output voltages
V
PP
Differential input voltage
(6)
(peak-to-peak) (PECL)
1.3
V
V
PP, OK
Differential input voltage
(7)
(peak-to-peak) (PECL)
0.3
V
V
PP, NOK
Differential input voltage
(8)
(peak-to-peak) (PECL)
0.1
V
V
O(P-P)
Differential output voltage (peak-to-peak) (PECL)
0.3
0.8
V
PLL and IDCS specifications
t
(
)
Propagation Delay (static phase offset)
CLKX,
CLKX
to FB_IN,
FB_IN
–100
150
ps
PLL locked with external
feedback selected
t
sk(O)
Output-to-output Skew within a bank
(9)
Output-to-output Skew across a bank
(9)
50
100
ps
PER/CYC
Rate of change of period
(10)
÷
2 output
÷
4 output
÷
8 output
÷
16 output
+40
+80
+120
+160
±
40
±
80
±
120
±
160
ps
slew_control = 1
PER/CYC
Rate of change of period
(11)
÷
4 output
÷
8 output
÷
16 output
÷
2 output
ps
slew_control = 0
Jitter and bandwidth specifications
t
JIT(CC)
Cycle-to-cycle jitter
RMS (1
σ
)
10
ps
N = 2, 2, 2, 2
N = 4, 4, 4, 4
N = 8, 8, 8, 8
15
ps
N = 16, 16, 16, 16
t
JIT(PER)
Period Jitter
RMS (1
σ
)
10
ps
N = 2, 2, 2, 2
N = 4, 4, 4, 4
N = 8, 8, 8, 8
15
ps
N = 16, 16, 16, 16
t
JIT(
)
I/O Phase Jitter
RMS (1
σ
)
30
ps
BW
PLL closed loop bandwidth
(12)
2
MHz
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