I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER FOR MONITORS S1D2500A01
I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER
The S1D2500A01 is a very high frequency video amplifier system with I2C Bus control used in Monitors with
high resolution up to1280 × 1024.
It contains 3 matched R/G/B video Amplifiers with OSD
interface and provides flexible interfacing to I2C Bus
controlled adjustment systems.
FUNCTIONS
• R/G/B Video Amplifier
• OSD Interface
• I2C BUS Control
• Contrast/OSD Contrast
• Brightness Control
• Cut-Off Brightness Control
• R/G/B SUB Contrast/Cut-Off Control
• Blank/Clamp Gate
• Half tone
• Brightness Uniformity
ORDERING INFORMATION
DevicePackageOperating Temperature
S1D2500A01-D0B028-DIP-600A-20 °C — +75 °C
28-DIP-600A
FEATURES
• 3 - Channel R/G/B Video Amplifier, 150MHz @f-3dB
• I2C Bus Control Items
- Contrast Control
- SUB Contrast Control For Each Channel
- Brightness Control
- OSD Contrast Control
- Cut-off Brightness Control
- Cut-off Control For Each Channel
- Switch Registers for SBLK and Video Half Tone and
Cut-Off INT/EXT
• SUB Contrast Control Range: -11dB
• Capable of 7.0Vpp Output Swing Range
• Video/OSD High Speed Switch
• Clamp Gate With Anti OSD Sagging
• B/U (Brightness Uniformity) Interface
• Video Input Clamp, BRT Clamp
• Video & OSD Half Tone Function on OSD
Picture
(OSD Raster Selection by HS1, 2: 4 colors)
• OSD Interface, OSD BLK
• ABL
• TTL R/G/B OSD Inputs, 80MHz bandwidth
• Contrast Control Range: -38dB
• OSD Contrast Control Range: -38dB
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S1D2500A01 I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER FOR MONITORS
CUT OFF EXT OFFSET D3:5 (0AH)
BLOCK DIAGRAM
ROSD
GOSD
BOSD
VCC2
RIN
VCC1
GND1
GIN
B/U
VI/OSD_SW
CLP
BIN
ONE (RED)
OF THREE CHANNELS
1
2
3
9
5
6
7
8
28
4
18
10
OSD
INTERFACE
gm1
CLP
B/U
INTERFACE
VIDEO/OSD
SWITCH
CLAMP
GATE
VIDEO
OSD
SWITCH
CLP BLK
OSD
RASTER
VIDEO
HALF-TONE
HALF-TONE
VIDEO
HALF-TONE
OSD RASTER
SELECT
BLANK
GATE
OSD
CONTRAST
VIDEO
CONTRAST
VIDEO-HALF TONE SWITCH
D1(0AH)
OSD RASTER COLOR
D6:7(0AH)
SOFT BLANK
D0(0AH)
BLK
ROUT
SUB
+
CONTRAST
+
R/G/B DRIVE CONTROL (02/03/04H)
CONTRAST CONTRAL (00H)
OSD CONT CONTROL (05H)
A2
A1
A3
Cut Off
++
R/G/B CUT OFF CONTROL (07/08/09H)
BRIGHTNESS CONTROL (01H)
CUT OFF INT/EXT SWITCH(0AH)
26
CLP
27
gm2
17
23
22
21
20
15
CUT OFF BRIGHT (06H)
24
25
16
12
RCLP
RCT
VCC3
GND3
BOUT
BCLP
BCT
GOUT
GCLP
GCT
ABL
19
BLK
INTERFACE & CONTROL
GND(L)
2
I2C BUS CONTROL
14
SDA
13
SCL11
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I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER FOR MONITORS S1D2500A01
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
ROSD
GOSD
BOSD
VI/OSD_SW
RIN
VCC1
GND1
GIN
VCC2
BIN
GND(L)
ABL
SCL
SDA
ROUT
GOUT
S1D2500A
B/U
RCLP
GCLP
VCC3
GND3
BOUT
BCLP
BLK
CLP
RCT
GCT
BCT
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Table 1. Pin Configuration
Pin NoSymbolI/OConfiguration
1ROSDIRed OSD Input
2GOSDIGreen OSD Input
3BOSDIBlue OSD Input
4VI/OSD_SWIVideo or OSD Switch
5RINIRed Video Input
6V
CC1
-VCC (normal)
7GND1-Ground1 (normal)
8GINIGreen Video Input
9V
CC2
-VCC (normal)
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S1D2500A01 I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER FOR MONITORS
Table 1. Pin Configuration
Pin NoSymbolI/OConfiguration
10BINIBlue Video Input
11GND (L)-Ground2 (logic)
12ABL-Automatic Beam Limit
13SCLI/OSerial Clock
14SDAI/OSerial Data
15BCTIBlue Cut Off Control
16GCTIGreen Cut Off Control
17RCTIRed Cut Off Control
18CLPIClamp Gate Signal Input
19BLKIBlank Gate Signal Input
20BCLP-Blue Clamp Cap
21BOUTOBlue Video Output
22GND3-Ground3 (drive part)
23V
CC3
-VCC (drive part)
24GOUTOGreen Video Output
25GCLP-Green Clamp Cap
26ROUTORed Video Output
27RCLP-Red Clamp Cap
28B/UIBrightness Uniformity
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I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER FOR MONITORS S1D2500A01
PIN DESCRIPTION
Table 2. Pin Description
Pin NoPin NameSchematicDescription
1
Red OSD Input
(ROSD)
2
Green OSD Input
(GOSD)
3
Blue OSD Input
(BOSD)
4Video/OSD Switch
(VI/OSD_SW)
1.29/
1.02V
PIN 4
PIN 1
VCC
VCC
OSD input signals are in TTL
level and will be connected to
ground when switching to
video input
(Junction-ambient)
2Junction TemperatureTj-150-°C
3Human Body Mode
HBM2--KV
(C = 100p, R = 1.5k)
4Machine Model
MM300--V
(C = 200p, R = 0)
5Charge Device ModelCDM800--V
ELECTRICAL CHARACTERISTICS
DC Electrical Characteristics
Ta = 25 °C, V
Supply Current
Clamp Gate Low Input VoltageV
CC1
= V
CC2
= V
= 12V; V4 = 0V; unless otherwise stated
CC3
Table 5. DC Electrical Characteristics
ParameterSymbolMinTypMaxUnit
I
CC
(4)
151
85110135mA
0.81.53.0V
Clamp Gate High Input VoltageV
15h
0.81.52.0V
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S1D2500A01 I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER FOR MONITORS
Table 5. DC Electrical Characteristics (Continued)
ParameterSymbolMinTypMaxUnit
Clamp Gate Low Input CurrentI
Clamp Gate High Input CurrentI
Blank Gate Low Input VoltageV
Blank Gate High Input VoltageV
Blank Gate Low Input CurrentI
Blank Gate High Input CurrentI
15l
15h
16l
16h
16l
16h
-5.0-2.0-µA
-0.011.0µA
0.81.53.0V
0.81.52.0V
-5.0-2.0-µA
-0.011.0µA
Video Input bias VoltageVbias1.61.92.2V
Output Clamp Cap Charge CurrentIclamp+0.450.751.10mA
Output Clamp Cap Discharge CurrentIclamp--1.10-0.75-0.45mA
Video Output Low VoltageV
Video Output High VoltageV
Video Black Level Output Voltage (POR)V
Video ∆Black Level Output Voltage
∆VO
Video Output Blanked VoltageV
OL
OH
OBL
BL
OB
(5)
-100200mV
6.27.59.0V
1.92.22.5V
-0.3-0.3V
-0.10.2V
Contrast/Drive Control Input Currentlosd, ldirve
-0.251uA
lcon
Spot Killer VoltageVspot9.210.411.2V
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I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER FOR MONITORS S1D2500A01
AC Electrical Characteristics
Ta = 25 °C, V
Vin = 0.56Vpp Manually adjust Video Output pins 21, 24 and 26 to 4V DC for the AC test
Hold Time Before a new transmission can startt
Hold Time for Start Conditiont
Set-up Time for Stop Conditionst
The Low Period of SCLt
The High Period of SCLt
Hold Time Datat
Set-up Time Datat
Rise Time of SCLt
Fall Time of SCLt
I2C BUS Timing Requirement
SCL
BUF
HDS
SUP
LOW
HIGH
HDAT
SUPDAT
R
F
--200kHz
1.3--uS
0.6--uS
0.6--uS
1.3--uS
0.6--uS
0.3--uS
0.25--uS
--1.0uS
--3.0uS
SDA
SCL
t
BUF
t
HDS
t
HDAT
t
SUPDAT
t
HIGH
t
LOW
t
SUP
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S1D2500A01 I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER FOR MONITORS
NOTES:
1.Absolute Maximum Rating Indicates the limit beyond which damage to the device may occur.
2.Operating Ratings indicate conditions for which the device is functional but do not guarantee specific performance limits.
For guaranteed specifications and test conditions, See the Electrical Characteristics. The guaranteed specifications apply
only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under
the listed test conditions.
3.VCC supply pins 6, 9, and 23 must be externally wired together to prevent internal damage during VCC power on/off
cycles.
4.The supply current specified is the quiescent current for V
for V
5.Output voltage is dependent on load resistor. Test circuit uses RL = 390Ω
6.Measure gain difference between any two amplifiers Vin = 560mVpp.
7.When measuring video amplifier bandwidth or pulse rise and fall times, a double sided full ground plane printed circuit
board without socket is recommended. Video amplifier 10MHz isolation test also requires this printed circuit board.
The reason for a double sided full ground plane PCB is that large measurement variations occur in single sided PCBs.
8.Adjust input frequency from 10MHz (AV max reference level) to the-3dB frequency (f -3dB).
9.Measure output levels of the other two undriven amplifiers relative to the driven amplifier to determine channel separation.
Terminate the undriven amplifier inputs to simulate generator loading. Repeat test at fin = 10MHz for Iso_10MHz.
10. A minimum pulse width of 200 ns is guaranteed for a horizontal line of 15kHz. This limit is guaranteed by design. if a lower
line rate is used a longer clamp pulse may be required.
11. During the AC test the 4V DC level is the center voltage of the AC output signal. For example. if the output is 4Vpp the
signal will swing between 2V DC and 6V DC.
12. These parameters are not tested on each product which is controlled by an internal qualification procedure.
(pin 23) also depends on the output load.
CC3
CC1/VCC2
and V
with RL = ∞ . The supply current
CC3
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I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER FOR MONITORS S1D2500A01
FUNCTIONAL DESCRIPTION
Contrast (OSD Contrast Adjustment) (8-bits)
The contrast adjustment is made by controlling simultaneously the gain of three internal variable gain amplifiers
through the I2C bus interface.
The contrast adjustment allows you to cover a typical range of 38dB.
Brightness Adjustment (8-bits)
The brightness adjustment controls to add the same black level (pedestal) to the 3-channel/R/G/B signals after
contrast amplifier by I2C BUS.
Cut-Off Brightness Adjustments (8-bits)
The Cut-Off Brightness adjustment is made by simultaneously controlling the external cut-off current.
Cut-Off (SUB Contrast) Adjustment (8-bits × 3)
These adjustments are used to adjust the white balance, and the gain of each channel is controlled by I2C BUS.
The SUB contrast adjustment allows you to cover a typical range of 11dB.
OSD Inputs
The S1D2500A01 includes all the circuitry necessary to mix OSD signals into the R/G/B video signal.
You need 4 pins for this function. (R/G/B OSD, OSD blanking)
Serial Interface
The 2-wires serial interface is an I2C BUS interface.
The slave address of the S1D2500A01 is DC (hexadecimal)
Bit8Bit7Bit6Bit5Bit4Bit3Bit2Bit1
11011100 (W)
Data Transfer
All bytes are sent MSB (Most Significant Bit) bit first and the write data transfer is closed by a stop.
The MCU can write data into the S1D2500A01 registers. To do that, after a start, the MCU must send:
- The I2C address slave byte with a low level for R/W bit (bit1)
- The byte of the interinal register address where the MCU wants to write data (SUB Address)
- The data
- Stop
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S1D2500A01 I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER FOR MONITORS