ODHKGL4136HD-04
KGL4136HD
1
Electronic Components
APPLICATION NOTES
1. EXTERNAL BLOCKING CAPACITORS ARE REQUIRED FOR THE DATA INPUTS
(IN/INB). TERMINATION CAPACITORS ARE REQUIRED BETWEEN THE
CONTROL VOLTAGES (VB1/VB2) AND GROUND.
2. To minimize the dependence of the “X-Point” on the supply voltage VS
a : VB2 is open
VB2 is biased at about 0.76 x VS (-3.8V@VS=-5.2V) by the internal circuit.
Control VB1, so that the voltage difference “VB1–VB2” is constant.
b : VB2 is biased
Bias VB2 at about 1.2V by using the external voltage source independent of VS.
Control VB1 by using the external voltage source independent of VS.
3. To minimize the dependence of “Output amplitude” on the supply voltage VS
Control the voltage of “VC1”, so that the voltage difference “VC1–VS” is constant.
4. Power-up/shut-down sequence
a. For manual power-up, turn on supply control voltages (VB1, VB2, VC1) at
first, next VS, then VD. For shutdown, turn off VD first, then VS, then
control voltages. The sequence for the control voltages (VB1, VB2, VC1) is
not critical.
b. For simultaneous start up it is recommended that the delay between the
supply control voltages (VB1, VB2, VC1) and VS be minimized, or that all
voltages be applied at the same time.
7/9
OKI [ OKI ELECTRONIC COMPONETS ]
