參數(shù)資料
型號： BT865AKPF
英文描述： Color Encoder Circuit
中文描述： 顏色編碼器電路
文件頁數(shù)： 70/76頁
文件大小： 1050K
代理商： BT865AKPF
4.0 Parametric Information
Bt864A/865A
4.2 AC Electrical Parameters
YCrCb to NTSC/PAL Digital Video Encoder
4-4
Conexant
100138B
Control Output Delay Time
(5)
5.0 V
3
17
ns
3.3 V
3
35
ns
Control Output Hold Time
(5)
4
4
ns
CLK Frequency
24.54
27
29.5
MHz
CLK Pulse Width Low Time
8
ns
CLK Pulse Width High Time
8
ns
Pipeline Delay
Input Pixels to Composite Video
52
CLK periods
Input Pixels to RGB Output
52
CLK periods
VAA Supply Current
180
mA
VDD Supply Current
5.0 V
50
mA
3.3 V
30
mA
Total Supply Current
5.0 V
230
mA
3.3 V
210
mA
Power-Down Mode Currents
VAA Supply Current (SLEEP = 1)
(6)
1
mA
VDD Supply Current (SLEEP = 1)
(6)
1
mA
VAA Supply Current (DAC off =1)
1
mA
VDD Supply Current (DAC off =1)
50
mA
NOTE(S):
(1)
75/7.5/75/7.5 Color bars normalized to burst.
(2)
100/0/100/0 Colorbars normalized to burst.
(3)
Guaranteed by characterization.
(4)
Without post filter. Guaranteed by design.
(5)
Control pins are defined as: P[7:0], Y[7:0],BLANK*, HSYNC*, VSYNC*, FIELD, TTXREQ, TTXDAT.
(6)
All digital inputs at GND or VDD.
7.
“
Recommended Operating Conditions,
”
NTSC CCIR 601 operation, and CLK frequency = 27 MHz. Analog output load
e
75 pF.
HSYNC*, VSYNC*, BLANK*, and FIELD output loads
e
75 pF. As the above parameters are guaranteed over the full
temperature range, temperature coefficients are not specified or required. Typical values are based on nominal temperature,
i.e., room temperature, and nominal voltage, i.e., 5 V. Video input and output timing is shown in
Figure 4-1
.
Table 4-4. AC Characteristics (VDD = 5 V, VAA = 5 V)
(2 of 2)
Parameter
EIA/TIA
250C Ref
CCIR
567
Symbol
Min
Typ
Max
Units
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