THS7347 Datasheet, PDF (10/28 Pages) Texas Instruments – 3-Channel RGBHV Video Buffer with I2C™ Control, 2:1 Input Mux, Monitor Pass-Through, and Selectable Input Bias Modes

THS7347
SLOS531 – MAY 2007
FUNCTIONAL BLOCK DIAGRAM
www.ti.com
Channel 1
Input A
Channel 2
Input A
Channel 3
Input A
H-Sync
Input A
V-Sync
Input A
2:1
X1
DC
+Offset
DC
AC-
BIAS
AC
Sync
TIP
Clamp
+
Channel 1 Buffer
-
Output (To ADC)
+
Disable
-
= OPEN
1 kW 878 W
675 W
150 W
Channel 1 Monitor
Output
Channel 1 SAG
2:1
X1
DC
+Offset
DC
AC-
BIAS
AC
Sync
TIP
Clamp
+
Channel 2 Buffer
-
Output (To ADC)
+
Disable
-
= OPEN
1 kW 878 W
675 W
150 W
Channel 2 Monitor
Output
Channel 2 SAG
Channel 1
Input B
Channel 2
Input B
Channel 3
Input B
H-Sync
Input B
V-Sync
Input B
2:1
X1
DC
+Offset
DC
AC-
BIAS
AC
Sync
TIP
Clamp
2:1
+
-
2:1
+
-
10 kW
+1.4 V
+
Channel 3 Buffer
-
Output (To ADC)
+
Disable
-
= OPEN
1 kW 878 W
675 W
150 W
Channel 3 Monitor
Output
Channel 3 SAG
Horizontal Sync
Buffer OUTPUT
Horizontal Sync
Monitor OUTPUT
Vertical Sync
Buffer OUTPUT
Vertical Sync
Monitor OUTPUT
MUX
MUX
MODE SELECT
SCHMITT
TRIGGER
ADJUST
SDA SCL
I2C, I2C, PUC
A1 A0
NOTE: The I²C address of the THS7347 is 01011(A1)(A0)(R/W).
+V_DD DGND +V_A
AGND
10
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