參數(shù)資料
型號: C484CD42
英文描述: ST7260 - LOW SPEED USB 8-BIT MCU FAMILY WITH UP TO 8K FLASH/ROM AND SERIAL COMMUNICATION INTERFACE (SCI)
中文描述: 電信提供商/數(shù)據(jù)通信
文件頁數(shù): 4/15頁
文件大小: 426K
代理商: C484CD42
4
Agere Systems Inc.
C482, C484, and C486 (C48-Type)
2.5 Gbits/s Cooled Laser Transmitters
Data Sheet, Rev. 1
September 2002
Characteristics
(continued)
1. Output power definitions and measurement per ITU-T Recommendation G.957.
2. At room temperature; takes into account the initial variation in temperature as well as long-term aging. Please refer to the applica-
tion
note,
Wavelength Tolerance in DWDM
for more information on this value.
3. Measured using time resolved spectroscopy (TRS). This corresponds to approximately 0.3 nm maximum at full width 20 dB down
using a spectrometer with resolution of 0.05 nm.
4.
Ratio of the average output power in the dominant longitudinal mode to the power in the most significant side mode under fully
modulated conditions.
5. Filter bandwidth from 12 kHz—20 MHz, according to ITU-T G813.
6. Ratio of logic 1 output power to logic 0 output under fully modulated conditions; with fourth-order Bessel-Thomson filter on.
7. GR-253-CORE,
Synchronous Optical Network (SONET) Transport Systems: Common Generic Criteria.
8
.
ITU-T Recommendation G.957,
Optical Interfaces for Equipment and Systems Relating to the Synchronous Digital Hierarchy.
Table 3. Optical Characteristics
Parameter
Symbol
Min
Typ
Max
Unit
Average Optical Power Output:
1
C482, C484
P
AVG BOL
P
AVG EOL
0
–0.5
1.0
2.0
2.0
dBm
dBm
Average Optical Power Output:
1
C486
P
AVG BOL
P
AVG EOL
P
6.0
5.5
–0.5
6.7
8.0
8.5
0.5
dBm
dBm
dBm
Output Power Variation (over temperature and
wavelength)
Center Wavelength Range (See Tables 6—11.)
Wavelength Accuracy
2
Wavelength Variation and Aging
2
Wavelength Chirp (on-state/off-state
λ
)
3
Side-mode Suppression Ratio
4
Jitter, Intrinsic
5
Extinction Ratio
6
Eye Mask of Optical Output
7, 8
Optical Rise/Fall Time (20%—80%):
C482, C484
C486
Maximum Return Loss (optical)
λ
C
λ
C
λ
C
λ
SMSR
r
e
1528.77
–0.015
–0.100
30
8.2
Meets SONET and ITU-T
1563.86
0.015
–0.100
0.20
0.05
nm
nm
nm
nm
dB
UIp-p
dB
t
R,
t
F
t
R,
t
F
O
RL
130
150
24
ps
ps
dB
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