3970-TYPE 데이터 시트보기 (PDF) - Agere -> LSI Corporation
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3970-TYPE Datasheet PDF : 6 Pages
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3970-Type 1550 nm Transmitter
Data Sheet
October 2001
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Parameter
Operating Temperature Range
Storage Case Temperature Range
Symbol
TOP
Tstg
Min
Max
Unit
0
50
°C
–20
65
°C
Characteristics
Table 1. Optical/Electrical Characteristics
Parameter
Device Code
Unit
3970A
3970B
3970C
3970D
3970E
3970F
Channel Plan
79 NTSC
Optical Output (min)
Wavelength Range
Flatness (max)
42 MHz—750 MHz
42 MHz—870 MHz
RF Return Loss (min),
42 MHz—870 MHz
RF Input Level, CW1
7 Each
1540—
1560
1.0
1.5
16
17—27
40 NTSC
Low
7 Each
1540—
1560
1.0
1.5
16
20—30
39 NTSC
High
7 Each
1540—
1560
112 NTSC
7 Each
1540—
1560
60 PAL-D
7 Each
1540—
1560
1.0
1.0
1.0
1.5
1.5
1.5
16
16
16
20—30 15.5—25.5 18—28
Carrier-to-Noise Ratio
52
55
55
49
52
(min), 65 km2, 3
Composite Second
–65
–70
–70
–60
–65
Order (min)2, 3,
Composite Triple Beat
–65
–67
–67
–62
–65
(min)2, 3,
Cross Modulation
(min)2, 3, 4,
–65
–65
–65
–60
–65
Number of Outputs5
2
2
2
2
2
42 Cen-
elec
7 Each
1540—
1560
1.0
1.5
16
22—32
52
–65
–65
–65
2
—
dBm
nm
dBp-p
dBp-p
dB
dBmV/
channel
dB
dBc
dBc
dBc
—
1. Input range over which specifications are met.
2. Received power is 0 dBm. Receiver responsivity is assumed to be 1.0 mA/mW, and receiver equivalent noise current is 8 pA/(Hz)1/2.
3. For link consisting of transmitter, EDFA, 65 km of SMF-28 fiber, and receiver. EDFA noise figure is 5 dB minimum. Launch power from EDFA
is 16 dBm minimum. Noise bandwidth is 4 MHz for NTSC, 5 MHz for PAL and Cenelec.
4. Measured per NCTA recommended practice, except when measured with appropriate adjustments to the transmitter to prevent AGC-induced
gain change, which corrupts XMOD measurement.
5. All specifications apply to both outputs.
2
Agere Systems Inc.
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