- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383976 > UPC1851B (NEC Corp.) CONN SEALING FOR WALL RCPT #10 PDF資料下載
參數(shù)資料
| 型號(hào)： | UPC1851B |
| 廠商： | NEC Corp. |
| 英文描述： | CONN SEALING FOR WALL RCPT #10 |
| 中文描述： | I2C總線兼容美國的多邊貿(mào)易體制處理LSI |
| 文件頁數(shù)： | 20/60頁 |
| 文件大?。?/td> | 447K |
| 代理商： | UPC1851B |
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頁當(dāng)前第20頁第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
20
μ
PC1851B
Data Sheet S13417EJ2V0DS00
2.3 dbx Noise Reduction Block
All the filters required for TV-dbx Noise Reduction are incorporated. These filter responses are adjusted by
setting all the FILTER SETTING bits (Write register, subaddress 02H, bits D0 to D5).
(1) LPF
This LPF has traps at f
H
and 24 kHz each. The f
H
trap filter minimizes interference by the f
H
signal which is not
synchronized with the pilot signal (for example, leakage of the synchronous idle and buzz from the video signal).
(2) 408-Hz LPF
This filter is a de-emphasis filter. Its transfer function is as follows:
f
1 + j
5.23k
f
408
T(f) =
1 + j
(3) Variable Emphasis
It is also called the spectral VCA. It is controlled by the spectral RMS. The transfer function is as follows:
f
1 + 51b
b + 1
1 + 51
b + 1
1 + j
x
20.1k
f
20.1k
S
–1
(f, b) =
1 + j
x
where “b” is the variable transferred from the spectral RMS for controlling.
(4) Wide-band VCA
A VCA whose operating frequency range is mainly low to mid frequencies and controlled by the wide-band RMS.
The transfer function is as follows:
W
–1
(a) = a
where “a” is the variable transferred from the wide-band RMS for controlling.
(5) 2.19-kHz LPF
This filter is a de-emphasis filter. Its transfer function is as follows:
f
1 + j
62.5k
f
2.19k
T(f) =
1 + j
(6) Spectral RMS Filter
A filter that limits the band width of the signal input to the RMS which controls the variable emphasis. The
transfer function is as follows:
f
f
( j
)
2
j
7.66k
f
7.31k
3.92k
T (f) =
x
f
f
1 + j
+ ( j
)
2
1 + j
7.66k
3.92k
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPC1851BCU | I2C BUS-COMPATIBLE US MTS PROCESSING LSI |
| uPC1853CT-01 | MATRIX SURROUND IC WITH I2C BUS |
| uPC1853CT-02 | MATRIX SURROUND IC WITH I2C BUS |
| UPC1853 | CONN SEALING FOR WALL RCPT #14 |
| UPC1857 | SOUND CONTROL IC WITH SURROUND AND I2C BUS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPC1851BCU | 制造商:NEC 制造商全稱:NEC 功能描述:I2C BUS-COMPATIBLE US MTS PROCESSING LSI |
| UPC1852 | 制造商:NEC 制造商全稱:NEC 功能描述:BIPOLAR ANALOG INTEGRATED CIRCUITl |
| UPC1852CT | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TV/Video Sound Circuit |
| UPC1853 | 制造商:NEC 制造商全稱:NEC 功能描述:MATRIX SURROUND IC WITH I2C BUS |
| UPC1853CT | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Surround-Sound Processor |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。