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I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER S1D2504A01
I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER
The S1D2504A01 is very high frequency video amplifier system with I2C BUS control used in Monitors.
It contains 3 matched R/G/B video Amplifiers and provides
flexible interfacing to the I2C BUS controlled adjustment sys-
tems.
FUNCTIONS
• R/G/B Video Amplifier
• I2C BUS Control
• Contrast Control
• Brightness Control
• Cut-Off Brightness Control
• R/G/B SUB Contrast/Cut Off Control
• Blank/Clamp Gate
• Auto beam current limitation (ABL) is possible
with external pin.
• The S1D2504A01 includes white balance
adjustment that is effective on brightness (by
Cut-Off control for each channel).
ORDERING INFORMATION
S1D2504A01-D0B0 24-DIP-300 -20 °C — 75 °C
24-DIP-300
Device Package Operating Temperature
FEATURES
• 3-Channel matched R/G/B Video Amplifiers
• I2C BUS control items
– Contrast control for the 3 channels
– Brightness control for the 3 channels
– SUB Contrast control for each channel
– Cut-Off control for each channel
– Cut-Off Brightness control for the 3 channels
– Switch Registers for SBLK and Cut-Off Offset Current
• Built-in ABL (Automatic Beam Limitation)
• Built-in Video output Brightness clamp
• 3-Channel R/G/B Video Amplifier 85 MHz @f-3 dB
• Contrast Control Range: -38 dB
• SUB Contrast Control Range: -11 dB
• Capable of 7 Vpp Output Swing
1
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S1D2504A01 I2C BUS COTROLLED R/G/B VIDEO AMPLIFIER
BLOCK DIAGRAM
ONE (RED)
VCC1
RIN
GND1
OF THREE CHANNELS
1
2
VIDEO
CONTRAST
SUB
CONTRAST
A1
3
BLK
A2
A3
CLP
gm2
ROUT
23
RCLP
24
_
+
16
RCT
GIN
GND2
BIN
VCC2
GND(L)
ABL
SCL
SDA
10
11
4
2.4V
5
BLK
CLP
CT
OFFSET
+ +
CUT OFF
CT BRT
6
7
CUT OFF OFFSET D6:5 (01H)
9
CONTRAST (00H)
G DRIVE (03H)
R DRIVE (02H)
BRIGHTNESS (01H)
B DRIVE (04H)
G CUT OFF (07H)
R CUT OFF (06H)
8
CUT OFF BRIGHT (05H)
B CUT OFF (08H)
CLAMP
GATE
21
22
15
18
17
14
20
19
12
GOUT
GCLP
GCT
BOUT
BCLP
BCT
VCC3
GND3
CLP
I2C BUS CONTROL
SOFT BLANK
D7 (01H)
BLANK
GATE
CONTROL
13
BLK
2
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I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER S1D2504A01
PIN CONFIGURATION
10
11
12
1
2
3
4
5
6
7
8
9
VCC1
RIN
GND1
GIN
GND2
BIN
VCC2
ABL
GND(L)
SCL
SDA
CLP
S1D2504A01
KA2504
RCLP
ROUT
GCLP
GOUT
VCC3
GND3
BOUT
BCLP
RCT
GCT
BCT
BLK
24
23
22
21
20
19
18
17
16
15
14
13
Table 1. Pin Configuration
NO Symbol I/O Configuration NO Symbol I/O Configuration
1 VCC1 - Normal Power Supply 13 BLK I Blank Gate Input
2 RIN I Red Video Input 14 BCT I Blue Cut off ctrl
3 GND1 - Normal Ground 15 GCT I Green Cut off ctrl
4 GIN I Green Video Input 16 RCT I Red Cut off ctrl
5 GND2 - Normal Ground 17 BCLP - Blue Clamp Cap
6 BIN I Blue Video Input 18 BOUT O Blue Video Output
7 VCC2 - Normal Power Supply 19 GND3 - Drive Power Ground
8 ABL I Automatic Beam Limit 20 VCC3 - Drive Power Supply
9 GND (L) - Logic Ground 21 GOUT O Green Video Output
10 SCL I/O Serial Clock 22 GCLP - Green Clamp Cap
11 SDA I/O Serial Data 23 ROUT O Red Video Output
12 CLP I Clamp Gate Input 24 RCLP - Red Clamp Cap
3
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S1D2504A01 I2C BUS COTROLLED R/G/B VIDEO AMPLIFIER
PIN DESCRIPTION
Table 2. Pin Description
Pin No Pin Name Schematic Description
1 VCC1 - Normal V
2
4
Red Video Input
(RIN)
Green Video Input
(GIN)
PIN 2
2.4V
VCC
Video Input (Maximum 0.7
Vpp)
CC
Blue Video Input
8
(BIN)
3 GND1 - Normal Ground
5 GND2 - Normal Ground
7 VCC2 - Logic V
8
VCC
CC
ABL
PIN 8
Auto Beam Limitation
(Control Range: 0.5 ~ 4.5 V )
9 GND (L) - Logic Ground
4
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I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER S1D2504A01
Table 2. Pin Description (Continued)
Pin No Pin Name Schematic Description
10
11
12
Serial Clock Input
(SCL)
Serial Data Input
(SDA)
Clamp Gate Input
(CLP)
PIN12
3.2V
SCL, SDA for I2C Bus Control
VCC
5.1V
Clamp Gate Input: TTL Level
Active Low
Clamp Gate Min. Duty
f: 34 kHz
duty: 0.3 µS
13 Blank Gate Input
(BLK)
14
Blue Cut-Off
(BCT)
15
Green Cut-Off
(GCT)
16
Red Cut-Off
(RCT)
lctbrt lct
PIN13
7V VCC
CS2 CS1
Blank Gate Input: TTL Level
Active Low
vccvcc
Cut-Off Control Output
Icut-off = Ict+Ictbrt+Ics 1+Ics 2
Ict : 0 ~ 540µA
pin 14
Ictbrt: 0 ~ 160µA
Ics 1 : 80µA
Ics 2 : 160µA
5
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S1D2504A01 I2C BUS COTROLLED R/G/B VIDEO AMPLIFIER
Table 2. Pin Description (Continued)
Pin No Pin Name Schematic Description
17
22
24
18
21
23
Blue Clamp Cap
(BCLP)
Green Clamp Cap
(GCLP)
Red Clamp Cap
(RCLP)
Blue Video Output
(BOUT)
Green Video Output
(GOUT)
Red Video Output
(ROUT)
Bright
Vout
+
-
PIN 17
Clamp Cap for Brightness
(During Clamp Gate Low)
vcc
Video Out
PIN 18
663uA
19 GND3 - Normal Ground
20 VCC3 - Drive V
CC
6