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參數(shù)資料
| 型號： | TQ8318 |
| 英文描述： | Telecommunication IC |
| 中文描述： | 通信集成電路 |
| 文件頁數(shù)： | 6/10頁 |
| 文件大?。?/td> | 460K |
| 代理商： | TQ8318 |
6
TQ8318/TQ8319
PRELIMINARY DATA SHEET
Notes:
1. Refer to Figure 2. All specifications for output data apply under the following conditions:
Output Data Pattern:
DOUT and NDOUT termination:
2
23
-1 PRBS, 9.95328Gbit/s
Direct Coupled external load is a 50 ohm termination to GND for the TQ8318;
Direct Coupled external load is a 25 ohm termination to GND for the TQ8319
>20 dB, 0 to 4 GHz
>15 dB, 4 to 12 GHz
>6 dB, 12 to 20 GHz
over specified operating range
adjusted to give 50% data crossing
Termination network return loss:
(TQ8318 only)
Vlevel:
VSYMX:
2. This specification applies to the Vmean measurement shown in Figure 2. Vlevel must be adjusted to the specified
level and VSYMX must be adjusted for optimum eye crossing level before making data eye measurements.
Maximum rise and fall times are measured with a 35ps input rise and fall time.
3. Measured at 2
23
-1 PRBS, 9.95328 Gbit/s, eye crossings
4. Peak to Peak jitter is defined as the difference between the measured jitter on the device and the test system jitter.
Jitter is unfiltered broadband measurement.
5. Device will function down to DC however some specs in Table 6 may not be met.
6.V
mean
full spec range is supported over V
offset
range.
Mean
‘
1
’
Level
T
rise
, T
fall
Mean
‘
0
’
Level
V
ripple
J
pp
T
pw
V
over
V
under
100%
80%
20%
0%
Data
Crossing
Meas.
T
rise
, T
fall
V
ripple
J
pp
V
m
V
m
V
m
Figure 2. 10.8Gb/s Output Data Eye Diagram
T
pw
=
V
min
=
T
rise
=
%
over
=
%
ripple
=
half of input waveform period
minimum peak-to-peak voltage (eye interior)
20% to 80% rise time, mean
‘
0
’
to mean
‘
1
’
Vover/Vmean X 100%
Vripple/Vmean X 100%
V
max
=
V
mean
=
T
fall
=
%
under
=
J
pp
=
maximum peak-to-peak voltage
Mean peak-to-peak voltage (mean eye opening)
20% to 80% fall time, mean
‘
0
’
to mean
‘
1
’
Vunder/Vmean X 100%
peak-to-peak data crossing jitter
Note: mimimum display persistence of 2s is assumed for the above measurements.
V
offset
DRIVEGND
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