X64-AN Quad User's Manual
X64-AN Quad Board
5
X64-AN Quad Functional Block Diagrams
Input Block Diagram (one shown)
Video
Input
typical
Differential
Amp
gain=1
Low Pass
Filter or
Bypass
ADC/PLL
X64-AN Quad
Core
75
8-bits
Jumper
Camera
controls
Figure 1: X64-AN Quad-Typical Input Block Diagram
Four differential video inputs with high CMRR (typically 70dB).
Input termination – 75 ohm.
Wide band or low pass filtered signal path. Single corner low pass filter selected by shorting
jumper. Filter specifications: analog 5th order Butterworth at 12.87 MHz.
Independent programmable gain and offset references to adjust brightness and contrast of the
analog image.
One ADC (analog to digital converter) for each input.
Each input has an independent clamper circuit and PLL (phase-locked loop).