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STMicroelectronics Electronic Components Datasheet

TDA9203A Datasheet

I2C BUS CONTROLLED 70MHz RGB PREAMPLIFIER

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TDA9203A
I2C BUS CONTROLLED 70MHz RGB PREAMPLIFIER
. 70MHz TYPICAL BANDWIDTH AT 4VPP OUT-
PUT WITH 12pF CAPACITIVE LOAD
. 5.5ns TYPICAL RISE/FALL TIME AT 4VPP
OUTPUT WITH 12pF CAPACITIVE LOAD
. POWERFULL OUTPUT DRIVE CAPABILITY
. BRT, CONT, DRIVE, OUTPUT DC LEVEL,
OSD CONTRAST, BACK-PORCH CLAMPING
PULSE WIDTH ARE I2C BUS CONTROLLED
. INTERNAL BACK-PORCH CLAMPING
PULSE GENERATOR
. OSD WHITE BALANCE TRACKING
. INTERNAL OSD SWITCHES
. BLANKING AND FAST-BLANKING INPUTS
. VERY LARGE DRIVE ADJUSTMENT RANGE
(48dB)
. SEMI-TRANSPARENT BACKGROUND ON
OSD PICTURE
. ABL CONTROL
SHRINK 24
(Plastic Package)
ORDER CODE : TDA9203A
PIN CONNECTIONS
DESCRIPTION
The TDA9203A is a digitaly controlled wideband
video preamplifier intended for use in mid range
color monitor. All controls and adjustments are
digitaly performed thanks to I2C serial bus. Con-
trast, brightness and DC output level of RGB sig-
nals are common to the 3 channels and drive
adjustment is separate for each channel.Three I2C
gain controlled OSD inputs can be switched with
RGB signals using fast blanking command. Clamp-
ing of RGB signals is performed thanks to a flexible
integrated system. The white balance adjustment
is effective on brightness, video and OSD signals.
The TDA9203A works for application using AC or
DC coupled CRT driver.
The ABL input provides a 12dB Max. attenuation
on the current contrast value according average
beam limitation voltage.
Because of its features and due to component
saving the TDA9203A leads to a very performant
and cost effective application.
June 1998
IN1
OSD1
AVDD
IN2
OSD2
AGND
IN3
OSD3
ABL
LGND
SDA
SCL
1
2
3
4
5
6
7
8
9
10
11
12
24 HSYNC
23 PVCC1
22 OUT1
21 PGND1
20 PVCC2
19 OUT2
18 PGND2
17 PVCC3
16 OUT3
15 PGND3
14 BLK
13 FBLK
1/13


STMicroelectronics Electronic Components Datasheet

TDA9203A Datasheet

I2C BUS CONTROLLED 70MHz RGB PREAMPLIFIER

No Preview Available !

TDA9203A
PIN DESCRIPTION
Name
IN1
OSD1
AVDD
IN2
OSD2
AGND
IN3
OSD3
ABL
LGND
SDA
SCL
Pin Type
Fun ction
1 I 1st Channel Main Picture Input
2 I 1st Channel OSD Input
3 I 12V Analog VDD
4 I 2nd Channel Main Picture Input
5 I 2nd Channel OSD Input
6 I/O Analog Ground
7 I 3rd Channel Main Picture Input
8 I 3rd Channel OSD Input
9 I ABL Input
10 I/O Logic Ground
11 I/O Serial Data Line
12 I Serial Clock Line
Name Pin Type
Function
FBLK 13 I Fast Blanking Input
BLK
PGND3
OUT3
PVCC3
PGND2
OUT2
PVCC2
PGND1
OUT1
PVCC1
HSYNC
14
15
16
17
18
19
20
21
22
23
24
I Blanking Input
I/O 3rd Channel Power Ground
O 3rd Channel Output
I 3rd Channel Power VCC
I/O 2nd Channel Power Ground
O 2nd Channel Output
I 2nd Channel Power VCC
I/O 1st Channel Power Ground
O 1st Channel Output
I 1st Channel Power VCC
I Horizontal Synch Input
BLOCK DIAGRAM
BLK
14
FBLK
13
PVCC1
23
CLAMP
AVDD 3
VREF
CONTRAST
IN1 1
AGND 6
IN2 4
BLUE CHANNEL
IN3 7
GREEN CHANNEL
ABL 9
LGND 10
BPCP
LATCHES
I2C
BUS D/A
DECODER
OSD
CONT
TDA9203A
24
11 12
HSYNC SDA SCL
2
OSD1
BRIGHTNESS
DRIVE
BPCP
OUTPUT
STAGE
8 bits
22 OUT1
21 PGND1
20 PVCC2
19 OUT2
18 PGND2
16 OUT3
17 PVCC3
15 PGND3
5
OSD2
I2C
8
OSD3
VREF
OUTPUT
DC LEVEL
ADJUST
2/13


Part Number TDA9203A
Description I2C BUS CONTROLLED 70MHz RGB PREAMPLIFIER
Maker ST Microelectronics
Total Page 13 Pages
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