LV4138W Datasheet, PDF (4/26 Pages) Sanyo Semicon Device – Bi-CMOS LSI For LCD Panel Drive Single Chip IC

[Color difference signal system]
LV4138W
Parameter
Color difference input balance
adjustment R
Color difference input balance
adjustment B
G-Y matrix characteristics
Symbol
GEXRMX
GEXRMN
GEXBMX
GEXBMN
VEXGBN
VEXGBP
VEXGR
Conditions
Input SIG5 (VL = 0mV) to (A) and SIG1 (-6dB,
100kHz, no burst) to (D) and (E). Assume that the
output amplitude (100kHz) of TP45 and that
(100kHz) of TP40 when TINT = 128 are VRO and
VB0 respectively. The output amplitude of TP45
and that of TP40 when TINT = 255 are VR1 and
VB1 respectively. Assume also that the output
amplitude of TP45 and that of TP40 when TINT = 0
are VR2 and VB2 respectively. Then, calculate as
follows :
GEXRMX = 20log (VR1/VR0)
GEXRMN = 20log (VR2/VR0)
GEXBMX = 20log (VB1/VB0)
GEXBMN = 20log (VB2/VB0)
Input SIG5 (VL = 0mV) to (A) and SIG1 NTSC
(0dB, 100kHz, no burst) to (D). Assume
that the output amplitude (100kHz) of
TP40 is VEXB and that of TP43 is
PAL
VEXBG. Calculate as follows :
EXGB = VEXBG/VEXB
Input SIG5 (VL = 0mV) to (A) and SIG1 (0dB,
100kHz, no burst) to (E). Assume that the output
amplitude (100kHz) of TP45 is VEXR and that of
TP43 is VEXRG. Calculate as follows :
VEXGR = VEXRG/VEXR
Ratings
min
typ
-5
+2
+3
+2
+3
-5
0.23
0.26
0.17
0.20
0.46
0.51
Unit
max
-2
dB
dB
dB
-2
dB
0.29
0.23
0.56
[RGB signal system]
Parameter
RGB signal and PCD output
DC voltage
RGB signal and PCD output
DC voltage difference
SIGCENT variable range
User brightness change rate
Brightness change rate
PCD output change rate
Symbol
VOUT
ΔVOUT
VCNT
UBRTMX
UBRTMN
BRTMX
BRTMN
PCDMX
PCDMN
Conditions
Enter SIG5 (VL = 0mV) to (A) and adjust BRIGHT
and PCD-BRT of serial bus to set TP43 and TP38
output to 9Vp-p. Then, measure the DC voltage of
TP38, TP40, TP43, and TP45.
Determine the maximum value of difference of
measured values of TP40, TP43, TP45, and TP38
of VOUT as described in the above item.
Confirm that setting V48 to 5.2V or 6.5V in the
VOUT measurement conditions proves
compliance with the above ΔVOUT and that
|V48-VOUT| ≤ 0.2V.
Measure the change rate of the black level of
TP40, TP43, and TP45 outputs when SIG3 is
entered to (A) and U-BRT is changed from 128 to
255.
Measure the change rate of the white level of
TP40, TP43, and TP45 outputs when SIG3 is
entered to (A) and U-BRT is changed from 128 to
0.
Measure the change rate of the black level of
TP40, TP43, and TP45 outputs when SIG3 is
entered to (A) and BRT is changed from 128 to
255.
Measure the change rate of the white level of
TP40, TP43, and TP45 outputs when SIG3 is
entered to (A) and BRT is changed from 128 to 0.
Enter SIG3 to (A), and measure the TP38 output
amplitude when PCD-BRT = 255.
Enter SIG3 to (A), and measure the TP38 output
amplitude when PCD-BRT = 0.
min
5.8
Ratings
typ
6.0
Unit
max
6.2
V
0
120
mV
5.2
0
6.5
V
2.0
3.0
V
-3
-2.0
V
2.0
2.5
V
-2.5
-2.0
V
9.0
Vp-p
1.5 Vp-p
Continued on next page.
No.8926-4/26