參數(shù)資料
型號(hào): TVP5040CPFP
廠商: TEXAS INSTRUMENTS INC
元件分類(lèi): 顏色信號(hào)轉(zhuǎn)換
英文描述: COLOR SIGNAL DECODER, PQFP80
封裝: POWER, PLASTIC, TQFP-80
文件頁(yè)數(shù): 19/109頁(yè)
文件大小: 568K
代理商: TVP5040CPFP
2–1
2 Functional Description
2.1
Analog Video Processing and A/D Converters
Figure 2–1 shows a functional diagram of the analog video preprocessors and A/D converters. This block provides
the analog interface to all the video inputs. It accepts up to four inputs and performs source selection, video clamping,
video amplification, analog-to-digital conversion, and fine gain and offset adjustments to center the digitized video
signal.
M
U
X
VI_1A
CH1_MUX_CTRL
0.1
F
VI_1B
0.1
F
CLAMP
CH1_CLAMP_MODE
BANDGAP
+
AGC
CH1_GAIN_OFFSET
FINE GAIN,
OFFSET
ADJUST
ADC
CLK
+
10
BITS
CH1_FINE_ADJUST
10
BITS
CH1_OUT
+
ADC REF
BUFFER
CLAMP
BUFFER
1.0
F
0.1
F
0.1
F
4.7
F
4.7
F
1.0
F
CLAMP1
BG
CLAMP2
REFP
REFM
TVP5040 ANALOG FRONT END
SCLK
M
U
X
VI_2A
CH2_MUX_CTRL
0.1
F
VI_2B
0.1
F
CLAMP
+
+
AGC
CH2_GAIN_OFFSET
FINE GAIN,
OFFSET
ADJUST
10
BITS
CH2_FINE_ADJUST
10
BITS
CH2_OUT
ADC
+
CLK
CH2_CLAMP_MODE
Figure 2–1. Analog Video Processors and A/D Converters
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