LG1602 Datasheet, PDF (1/10 Pages) Agere Systems – LG1602 Decision Circuit

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