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PDF LG1602 Data sheet ( Hoja de datos )
| Número de pieza | LG1602 | |
| Descripción | LG1602 Decision Circuit | |
| Fabricantes | Agere Systems | |
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Data Sheet
February 1999
Features
s Operation up to 3 Gbits/s
s Good sensitivity to low input signals
s Low power dissipation
s Surface-mount package
Applications
s SONET/SDH transmission systems
s Digital video transmission
s Digital test instruments
LG1602 Decision Circuit
Functional Description
The LG1602 is a gallium arsenide (GaAs) decision
circuit. It features a sensitive broadband input ampli-
fier and a D-type flip-flop that retimes and regener-
ates an input data stream that is weakened by noise,
jitter, and intersymbol interference.
The LG1602 has complementary 50 Ω output buff-
ers.
dc feedback ensures input threshold control for input
levels as low as 25 mV, when using dc balanced
input data. The LG1602 is available in a hermetically
sealed 16-lead glass-metal surface-mount package.
V+OUT V–OUT
V–REF
V–IN
V+IN
V+REF
110 pF
25 kΩ
50 Ω
50 Ω
25 kΩ
110 pF
Q
D
D
2 pF
50 Ω
50 Ω
2 pF
VSS
V–CLK
V+CLK
GND
5-7667(F)r.3
Figure 1. LG1602 Functional Diagram
1 page  
Data Sheet
February 1999
Electrical Characteristics (continued)
DATA IN
t1
D0
t2
D1
D2
CLOCK IN
DATA OUT
tPD
Figure 3. Timing Diagram
LG1602 Decision Circuit
VH
<V>
VL
VH
<V>
VL
VH
D0 0
VL
5-7668(F)r.2
50 Ω
≥0.047 µF
50 Ω
≥0.047 µF
COUPLING CAPACITORS
OPTIONAL
50 Ω
CLOCK
0.1 µF
V+OUT
6
V–OUT
5
5Ω
V–REF 9
V–IN 10
0.047 µF V+IN 11
5 Ω V+REF 12
0.047 µF
110 pF
25 kΩ
50 Ω
50 Ω
25 kΩ
110 pF
Q
D
D
Figure 4. Test Circuit
2 pF
0.047 µF
5Ω
4 VSS
–5.2 V +
3 V–CLK
–
50 Ω
2 pF
50 Ω
2
V+CLK
GND
1, 15, 16
50 Ω
CLOCK
TF1001A FIXTURE BOUNDARY
5-7669(F)r.2
Lucent Technologies Inc.
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet LG1602.PDF ] | |
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