Standard Definition Video Reconstruction
Filters and Buffers
AUX IN
D/A
ENCODER
AUX IN
D/A
ENCODER
AUX IN
D/A
ENCODER
0.1μF
*1MΩ
0.1μF
0.1μF
*1MΩ
*1MΩ
0.1μF
0.1μF
*1MΩ
*1MΩ
0.1μF
*1MΩ
+5V
VCC
OUT1
IN1A
DATA
IN1B
MAX7432
IN2A
OUT2
IN2B
IN3A
IN3B
GND
OUT3
REXT
75Ω 220μF**
75Ω 220μF**
***
+5V
SERIAL I/O
75Ω 220μF**
75Ω 220μF**
75Ω 220μF**
75Ω 220μF**
C1 = 1nF TO 1μF (SEE TABLE 3)
*NEEDED ONLY IN FILTER BYPASS MODE
**OPTIONAL OUTPUT CAPACITOR
***ONLY ONE PULLUP RESISTOR NEEDED PER BUS
300kΩ
C1
Z0 = 75Ω
75Ω
Z0 = 75Ω
75Ω
Z0 = 75Ω
75Ω
Z0 = 75Ω
75Ω
Z0 = 75Ω
75Ω
Z0 = 75Ω
75Ω
Figure 3. MAX7432A Typical Application Circuit
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