MPC9331 REVISION 7 March 11, 2016 6 ©2016 Integrated Device Technology, Inc.
MPC9331 Data Sheet 3.3 V 1:6 LVCMOS PLL CLOCK GENERATOR
Table 7. Characteristics (V
CC
= 3.3V 5%, T
A
= 0°C to 70°C)
(1)
1. AC characteristics apply for parallel output termination of 50 to V
TT
.
Symbol Characteristics Min Typ Max Unit Condition
f
REF
Input reference frequency 2 feedback
PLL mode, external feedback 4 feedback
6 feedback
8 feedback
12 feedback
PLL mode, internal feedback (8 feedback)
Input reference frequency in PLL bypass mode
(2)
2. In bypass mode, the MPC9331 divides the input reference clock.
100.0
50.0
33.3
25.0
16.67
25.0
240.0
120.0
80.0
60.0
40.0
60.0
240
MHz
MHz
MHz
MHz
MHz
MHz
MHz
PLL locked
f
VCO
VCO lock frequency range
(3)
3. The input frequency f
REF
must match the VCO frequency range divided by the feedback divider ratio FB: f
REF
= f
VCO
FB.
200 480 MHz
f
MAX
Output Frequency 2 output
4 output
6 output
8 output
12 output
100.0
50.0
33.3
25.0
16.67
240.0
120.0
80.0
60.0
40.0
MHz
MHz
MHz
MHz
MHz
PLL locked
V
PP
Peak-to-peak input voltage PCLK, PCLK 400 1000 mV LVPECL
V
CMR
(4)
4. V
CMR
(AC) is the crosspoint of the differential input signal. Normal AC operation is obtained when the crosspoint is within the V
CMR
range
and the input swing lies within the V
PP
(AC) specification. Violation of V
CMR
or V
PP
impacts static phase offset t
()
.
Common Mode Range PCLK, PCLK 1.2 V
CC
– 0.9 V LVPECL
t
PW,MIN
Input Reference Pulse Width
(5)
5. Calculation of reference duty cycle limits: DC
REF,MIN
= t
PW,MIN
f
REF
100% and DC
REF,MAX
= 100% – DC
REF,MIN
.
2.0 ns
t
R
, t
F
CCLK Input Rise/Fall Time
(6)
6. The MPC9331 will operate with input rise/fall times up to 3.0 ns, but the AC characteristics, specifically t
()
, t
PW,MIN
, DC and f
MAX
can only
be guaranteed if t
R
, t
F
are within the specified range.
1.0 ns 0.8 to 2.0 V
t
()
Propagation Delay CCLK to FB_IN
(7)
(static phase offset) PCLK to FB_IN
(7)
CCLK or PCLK to FB_IN
(8)
7. Data valid for f
REF
= 50 MHz and a PLL feedback of 8 (e.g. QAx connected to FB_IN and FSELA=1, PWR_DN=1).
8. Data valid for 16.67 MHz < f
REF
< 100 MHz and any feedback divider. t
sk(O)
[s] = t
sk(O)
[] (f
REF
360).
–250
–180
–3.0
–130
–30
–50
+120
+3.0
ps
ps
°
FB_SEL = 1 and
PLL locked
t
sk(O)
Output-to-output Skew 150 ps
DC
Output duty cycle
(9)
9. Output duty cycle is DC = (0.5 500 ps f
OUT
) 100%. (e.g. the DC range at f
OUT
= 100 MHz is 45% < DC < 55%).
(T2)–500 T2 (T2)+500 ps
t
R
, t
F
Output Rise/Fall Time 0.1 1.0 ns 0.55 to 2.4 V
t
PLZ, HZ
Output Disable Time 8.0 ns
t
PZL, LZ
Output Enable Time 10 ns
t
JIT(CC)
Cycle-to-cycle jitter
(10)
10. All outputs in 4 divider configuration.
200 ps
t
JIT(PER)
Period Jitter 125 ps
t
JIT()
I/O Phase Jitter RMS (1 ) 25 ps
BW
PLL closed loop bandwidth
(11)
4 feedback
PLL mode, external feedback 6 feedback
8 feedback
12 feedback
11. –3 dB point of PLL transfer characteristics.
2.0–8.0
1.2–4.0
1.0–3.0
0.7–2.0
MHz
MHz
MHz
MHz
t
LOCK
Maximum PLL Lock Time 10 ms