參數(shù)資料
型號: TVP3025-175
廠商: Texas Instruments, Inc.
英文描述: Video Interface PALETTE(三PLL,視頻接口調(diào)色器)
中文描述: 視頻接口盒(三鎖相環(huán),視頻接口調(diào)色器)
文件頁數(shù): 52/99頁
文件大?。?/td> 663K
代理商: TVP3025-175
2–38
2.3.16
The DAC outputs are controlled by three current sources (only two for IOR and IOB) as shown in
Figure 2–15. The default condition is to have 0 IRE difference between blank and black levels, which is
shown in Figure 2–17. If a 7.5-IRE pedestal is desired, it can be selected by setting bit 4 of the
general-control register. This video output is shown in Figure 2–16.
Analog Output Specifications
SYNC
(IOG Only)
Blank
G0 – G7
15 pF
RL
AVDD
IOG
C
(Stray+Load)
Figure 2–15. Equivalent Circuit of the Current Output (IOG)
A resistor (R
SET
) is needed between the FS ADJUST terminal and GND to control the magnitude of the
full-scale video signal. The IRE relationships in Figures 2–16 and 2–17 are maintained regardless of the
full-scale output current.
The relationship between R
SET
and the full scale output current IOG is:
R
SET
(
) = K1
×
V
ref
(V)/IOG (mA)
The full-scale output current on IOR and IOB for a given R
SET
is:
IOR, IOB (mA) = K2
×
V
ref
(V)/R
SET
(
)
where K1 and K2 are defined as:
PEDESTAL
IOG
IOR, IOB
8-BIT OUTPUT
K1 = 11,294
6-BIT OUTPUT
K1 = 11,206
8-BIT OUTPUT
K2 = 8,067
6-BIT OUTPUT
K2 = 7,979
7.5 IRE
0 IRE
K1 = 10,684
K1 =10,600
K2 = 7,462
K2 = 7,374
相關(guān)PDF資料
PDF描述
TVP3030-175 Video Interface PALETTE Exract(1600×1200,24位真彩色視頻接口調(diào)色器)
TVP3030-220 Video Interface PALETTE Exract(1600×1200,24位真彩色視頻接口調(diào)色器)
TVP3030-250 Video Interface PALETTE Exract(1600×1200,24位真彩色視頻接口調(diào)色器)
TVP3409-170 Advanced Video Interface PALETTE(雙PLL,視頻接口調(diào)色器真彩色CMOS)
TVP3409-135 Advanced Video Interface PALETTE(雙PLL,視頻接口調(diào)色器真彩色CMOS)
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