CXA1854AR
Pin
No.
Symbol Pin voltage
9 EXT-R
10 EXT-G
11 EXT-B
Equivalent circuit
VCC1
9
200
10
11
GND1
39 R OUT
VCC2
39
41 G OUT
VCC2
2
41
50
43
50
43 B OUT
GND2
Description
External digital signal input.
There are two threshold
values: Vth1 (approximately
1.2V) and Vth2 (approximately
2.2V). When one of the EXT-
RGB signals exceeds Vth1, all
of the RGB outputs go to
black level (black side clip
level); when an input exceeds
Vth2, only the corresponding
output goes to white level
(white side limiter level).
RGB primary color signal
output.
40 FB R
42 FB G
44 FB B
46 BLKLIM
48 REG
4.2V
VCC2
40
2k
42
44
GND2
Smoothing capacitor
connection for the feedback
circuit of RGB output DC level
control.
Use a low-leakage capacitor
because of high impedance.
VCC1
46
50k
2k
GND1
VCC1
48
60k
40k
40k
GND1
–6–
Sets the RGB output amplitude
(black-black) clip level.
Smoothing capacitor
connection for the internally
generated constant voltage
source circuit.
Connect a capacitor of 1µF or
more.