LG T711BK E Manual page 30

HFLB 1 32 FOCUS
XRAY 2 31 HSMOD
BOP 3 30 HPLL2
BSENS 4 29 HCAP
BIN 5 28 HREF
BDRV 6 27 HBUF
PGND 7 26 HPLL1
HDRV 8 25 SGND
TDA4841PS
XSEL 9 24 VCAP
Vcc 10 23 VREF
EWDRV 11 22 VAGC
VOUT2 12 21 VSMOD
VOUT1 13 20 ASCOR
VSYNC 14 19 SDA
HSYBC 15 18 SCL
CLBL 16 17 HUNLOCK
Pin Configuration
BLOCK DIAGRAM
8
1
TDA4841PS
V-SYNC INPUT
14
V-sync
AND POLARITY
CORRECTION
(TTL level)
clamping
VIDEO
16
blanking
CLAMPING
AND V-BLANK
HUNLOCK
17
HUNLOCK
OUTPUT
19
SDA I C-BUS 2
18
RECEIVER
SCL
10
V+
SUPPLY
9.2 to 16V AND
7
REFERENCE
25
H/C-sync
H/C-SYNC INPUT
15
(TTL level) AND POLARITY
CORRECTION
(video)
(1) See calculation of f range.
H
(2) See Figs 22 and 23.
KA3842B Current-Mode PWM Controller
PHLIPS 32P
EHT compensaton
via vertical size
EHT compensation
via horizontal size
22
100 150
nF
nF
1%
VSMOD HSMOD
5%
23 24 22 21
VERTICAL
EHT COMPENSATION
V-SYNC
OSCILLATOR
H-SIZE AND V-SIZE
INTEGRATOR
AND AGC
V-POSITION
V-SIZE, VOVSCN
TDA4841PS
PROTECTION
AND SOFT START
2
I C-BUS REGISTERS
X-RAY
COINCIDENCE DETECTOR
PROTECTION
FREQUENCY DETECTOR
PLL2, PARALLELOGRAM,
PLL1 AND HORIZONTAL
PIN UNBALANCE AND
H-POSITION OSCILLATOR
SOFT START
26 27 28 29 30
R
HBUF 10 nF
3.3
(1) 12 nF
R
2%
HREF
8.2 nF
100nF 1%
Block Diagram
- 31 -
7V
1.2V
EWDRV
31 11
Vout2
12
EW-OUTPUT
V-OUTPUT
H-PINCUSHION
13 Vout1
V-LINEARITY
H-CORNER
V-LINEARITY BALANCE
H-TRAPEZIUM
H-SIZE
OUTPUT 20
ASYMMETRIC
EW-CORRECTION
FOCUS
32
HORIZONTAL
AND VERTICAL
6
4
B+
3
CONTROL
5
H-OUTPUT 8 HDRV
STAGE
1 2 9
HFLB X-RAY XSEL
or
(2)
B+ CONTROL
APPLICATION