- 您現(xiàn)在的位置：買賣IC網 > PDF目錄372368 > STV2246 Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode PDF資料下載
參數(shù)資料
| 型號： | STV2246 |
| 元件分類： | 參考電壓二極管 |
| 英文描述： | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
| 中文描述： | 250 的低電流運算，低反向泄露，低噪聲穩(wěn)壓二極管 |
| 文件頁數(shù)： | 21/76頁 |
| 文件大?。?/td> | 2157K |
| 代理商： | STV2246 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁當前第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁
STV223XD/224XC - FUNCTIONAL DESCRIPTION
21/76
signals above 70 IRE, the APR will decrease the
RGB gain so that amplitude at the RGB output is
always 3 V (B/W). The APR gain control voltage is
memorized on an external capacitor where the
gain decrease is very fast and the gain increase is
very slow (several frames). The APR function can
be enabled or disabled via the I2C bus.
3.5 CHROMA CIRCUIT
PAL/SECAM/NTSC Decoders
SVHS Chroma input; bus-controlled SVHS mode.
– 30 dB ACC range.
– Integrated chroma base band delay line and ON/
OFF bus control.
– Automatic standard identification, with possibility
of forcing the standard via the bus.
– 3-crystal application capability for the South
American market:
The first crystal on Pin XTAL1 (3.5X MHz only),
he second crystal on Pin XTAL2 (3.5X MHz on-
ly), and the third crystal on Pin XTAL3/BTUN
(3.5X MHz only, used for PAL/NTSC application
only).
PAL/NTSC Decoder
ACC carried out by peak detector on synchronous
demodulation of the burst.
Fully-integrated killer function.
VCO using two standard crystals: 4.43 MHz and
3.58 MHz. One crystal is internally selected de-
pending on the standard selection. A third crystal
can be used in PAL/NTSC applications only.
VCO reference signal is available on Pin X1.
– 4.433619 MHz XTAL specification.
Mode of operation: serial resistance (without
load capacity),
Motional capacitance: C
M
= 13fF ±3fF,
Shunt capacitance: C
P
< 7pF,
Serial resistance: R
S
< 70
.
– 3.579545 MHz XTAL specification (NTSC M).
Mode of operation: serial resistance (without
load capacity),
Motional capacitance: C
M
= 11fF ±3fF,
Shunt capacitance: C
P
< 7 pF,
Serial resistance: R
S
< 70
.
– 3.575611 MHz XTAL specification (PAL M).
Mode of operation: serial resistance (without
load capacity),
Motional capacitance: C
M
= 12fF ±2fF,
Shunt capacitance: C
P
< 7pF,
Serial resistance: R
S
< 70
.
– 3.582056 MHz XTAL specification (PAL N).
Mode of operation: serial resistance (without
load capacity),
Motional capacitance: C
M
= 12fF ±2fF,
Shunt capacitance: C
P
< 7pF,
Serial resistance: R
S
< 70
.
0° and ± 90° demodulation angles for PAL.
Bus-controlled demodulation angles (0, 90) or (0,
104) are available in NTSC mode.
Bus-controlled Hue adjustment is available in
NTSC mode.
NTSC Automatic Flesh Control
Two automatic flesh control characteristics are
available via the bus.The normal flesh control with
±10° correction and a total action range of ±60°
and the wide flesh control with ±20° correction and
a total action range of ±90°.
SECAM Decoder
The following functions are fully-integrated: Killer,
PLL demodulator and De-emphasis functions.
3.6 CHROMA STANDARD IDENTIFICATION
Sequential Identification
Three identification sequences:
– XTAL1 (4.43 MHz) mode to identify either PAL or
NTSC.
– XTAL2 (3.58 MHz) mode to identify either PAL or
NTSC.
– SECAM mode (XTAL1 selection).
In 3-crystal applications, the SECAM sequence is
replaced by XTAL3 selection to identify either PAL
or NTSC signals.
PAL/NTSC Priority
SECAM mode is locked after two identified SE-
CAM sequences.
SECAM mode can be selected in 50 Hz mode on-
ly.
R-Y and B-Y outputs are blanked during Color
Search mode.
相關PDF資料 |
PDF描述 |
|---|---|
| STV2247 | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
| STV2248 | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
| STV2249 | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
| STV2286 | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
| STV2800 | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| STV2246C | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:I2C BUS-CONTROLLED MULTISTANDARD SINGLE CHIP TV PROCESSOR |
| STV2246H | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:IC BUS-CONTROLLED MULTISTANDARD SINGLE CHIP TV PROCESSOR |
| STV2247 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:I2C bus-controlled multistandard single chip TV processor |
| STV2247C | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:I2C BUS-CONTROLLED MULTISTANDARD SINGLE CHIP TV PROCESSOR |
| STV2247H | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:IC BUS-CONTROLLED MULTISTANDARD SINGLE CHIP TV PROCESSOR |
發(fā)布緊急采購，3分鐘左右您將得到回復。