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參數(shù)資料
| 型號： | MAX9597EVKIT+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 7/32頁 |
| 文件大?。?/td> | 0K |
| 描述： | KIT EVAL FOR MAX9597 |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 1 |
| 主要目的： | SCART 接口 |
| 已用 IC / 零件： | MAX9597 |
| 已供物品： | 板 |
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MAX9597
Low-Power Audio/Video Interface
for Single SCART Connectors
______________________________________________________________________________________
15
Video Reconstruction Filter
The video DAC outputs of the set-top box decoder chip
need to be lowpass-filtered to reject the out-of-band
noise. The MAX9597 integrates sixth-order, Butterworth
filters. The filter passband (±1dB) is typically 10MHz,
and the attenuation at 27MHz is 43dB. The filters are
suited for standard-definition video.
Video Outputs
The video output amplifiers can both source and sink
load current, allowing output loads to be DC- or
AC-coupled. The amplifier output stage needs approxi-
mately 300mV of headroom from either supply rail.
If the supply voltage is greater than 3.135V (5% below
a 3.3V supply), each amplifier can drive two DC-cou-
pled video loads to ground. If the supply is less than
3.135V, each amplifier can drive only one DC-coupled
or AC-coupled video load.
The SCART standard allows for video signals to have a
superimposed DC component within 0V and 2V.
Therefore, most video signals are DC-coupled at the out-
put. In the unlikely event that the video signal needs to
be AC-coupled, the coupling capacitors should be
220F or greater to keep the highpass filter formed by
the 37.5 equivalent resistance of the video transmis-
sion line to a corner frequency of 4.8Hz or below to keep
it well below the 25Hz frame rate of the PAL standard.
The video outputs can be enabled or disabled by bits 1
to 5 of register 0Dh. See Table 11.
Slow Switching
The MAX9597 supports the IEC 933-1, Amendment 1,
trilevel slow-switching standard that selects the aspect
ratio for the display (TV). Under I2C control, the
MAX9597 sets the slow-switching output voltage level.
Table 2 shows the valid input levels of the slow-switch-
ing signal and the corresponding operating modes of
the display device.
One port is available for slow-switching signals for the
TV. The slow-switching outputs can be set to a logic
level or high impedance by writing to bit 0 and 1 of reg-
ister 07h. See Table 9.
VIDEO ORIGIN
FORMAT
VOLTAGE RANGE
(V)
COUPLING
INPUT CIRCUIT CONFIGURATION
External
CVBS
Unknown
AC
Transparent sync-tip clamp
External
RGB
Unknown
AC
Transparent sync-tip clamp
External
Y
Unknown
AC
Transparent sync-tip clamp
External
C
Unknown
AC
Bias circuit
Internal
CVBS
0 to 1
DC
Transparent sync-tip clamp
Internal
R, G, B
0 to 1
DC
Transparent sync-tip clamp
Internal
Y, C
0 to 1
DC
Transparent sync-tip clamp
Internal
Y, Pb, Pr
0 to 1
DC
Transparent sync-tip clamp
Internal
CVBS
2.3 to 3.3
AC
Transparent sync-tip clamp
Internal
R, G, B
2.3 to 3.3
AC
Transparent sync-tip clamp
Internal
Y
2.3 to 3.3
AC
Transparent sync-tip clamp
Internal
C
2.3 to 3.3
AC
Bias circuit
Table 1. Recommended Coupling for Incoming Video Signals and Input Circuit
Configuration**
**
Use a 0.1F capacitor to AC-couple a video signal into the MAX9597.
SLOW-SWITCHING
SIGNAL VOLTAGE
(V)
MODE
0 to 2
Display device uses an internal
source such as a built-in tuner to
provide a video signal.
4.5 to 7.0
Display device uses a video signal
from the SCART connector and sets
the display to a 16:9 aspect ratio.
9.5 to 12.6
Display device uses a signal from the
SCART connector and sets the
display to a 4:3 aspect ratio.
Table 2. Slow-Switching Modes
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| MAX9597EVKIT+ | 功能描述:視頻 IC 開發(fā)工具 MAX9597 Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Boards 類型:YPbPr to RGBHV Converters 工具用于評估:LMH1251 工作電源電壓:5 V |
| MAX9598CTL+ | 功能描述:視頻開關(guān) IC A/V Switch for Dual SCART Connector RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時間: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel |
| MAX9598CTL+T | 功能描述:視頻開關(guān) IC A/V Switch for Dual SCART Connector RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時間: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel |
| MAX9598EVKIT+ | 功能描述:交換機 IC 開發(fā)工具 MAX9598 Eval Kit RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:USB Power Switches 工具用于評估:MAX4984E 工作電源電壓:2.8 V to 5.5 V |
| MAX9600EUP | 功能描述:校驗器 IC Dual ECL-D/Q PECL 500ps Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
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