ODHKGL4145HW-03
Electronic Components
KGL4145HW
TYPICAL APPLICATION
KGL4145HW
GND
Data-bar Input
INB
OUT
IN
Blocking
Capacitor
Ex. 0.1µF
VB1
VB2
VS
VC1 VC2
50
EAM
Data Input
Chip
Capacitor
≥
0.1µF
X-Point Control
X-Point Reference
Supply Voltage
Output
Amplitude
Control
Output Bias
Control
APPLICATION NOTE
1. For stable operation;
1-1. To prevent a dependence of “X-Point” on the supply voltage VS,
(1) Use an external voltage source of –3.8V for “VB2”, or
(2) Control the voltage of “VB1”, so that the voltage difference “VB1–VB2” is constant.
1-2. To prevent a dependence of “Output amplitude” on the supply voltage VS,
Control the voltage of “VC1”, so that the voltage difference “VC1–VS” is constant.
1-3. To prevent a dependence of “Output bias control voltage” on supply voltage VS,
Control the voltage of “VC2”, so that the voltage difference “VC2–VS” is constant.
2. Power-up/shut-down sequence;
For power-up, supply control voltages (VB1, (VB2), VC1, VC2) at first, then Vs
or supply all simultaneously.
For shut-down, Vs at first, then control voltages or shut down all simultaneously. .
Customer does not need to care about the sequence for the control voltages (VB1,(VB2),VC1,VC2).
4
OKI [ OKI ELECTRONIC COMPONETS ]
