ODHKGL4115HW-R-02

Electronic Components

KGL4115HW-R

6

TYPICAL APPLICATION

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.

For shut-down,

Vs at first, then control voltages.

Customer does not need to care about the sequence for the control voltages (VB1,(VB2),VC1,VC2).

3. Under “no signal input” condition, the operation may not be stable.

Inverted Data Input

X-Point Control

Data Input

IN

VB1

VS

VC1

VC2

OUT

GND

Chip

Capacitor

≥ 0.1µF

VB2

KGL4115HW-R

EAM

50

Chip

Capacitor

≥ 0.1µF

Blocking

Capacitor

Ex. 0.1

µF

INB

Chip

Capacitor

≥ 0.1µF