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參數(shù)資料
| 型號(hào)： | AN6291S |
| 廠商： | PANASONIC CORP |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | Dual dbx II Noise Reduction System ICs |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO22 |
| 封裝： | 0.375 INCH, PLASTIC, SOP-22 |
| 文件頁(yè)數(shù)： | 7/7頁(yè) |
| 文件大?。?/td> | 86K |
| 代理商： | AN6291S |
ICs for Cassette, Cassette Deck
AN6291, AN6291S
Z-
Fortissimo
+10dB
– 60dB
+20dB
0dB
– 80dB
– 60dB
+10dB
Magnetron saturation level
Distortes
D
Noise
Noise level
Recording
Pianissimo
I
6
1
Fortissimo (large sound)
distortes due to magnetron
saturation
Even if input width is
100dB, width 60-70dB is
playbacked in output.
Pianissimo (small sound)
is erased by the hysnoise
of tape
Fortissimo
+10dB
– 40dB
+20dB
0dB
D
Noise
PianissIncrease
1
– 80dB
Decrease
Compressed to
1/2 by dB
Increase
Fortissimo
Panssmo
Noseleve
Decrease–80dB
Expanded to
2 times by dB
+20dB
Large sound is playbacked
without distortion
Fortissimo is decreased less
than saturation level and
pianissimo is increased
more than noise level. Thus
they are recorded.
D range is expanded in equal
value
as
fortissimo
increased and pianissimo is
decreased its level, and they
are playbacked.
is
100dB of input range
is playbacked as well
Small sound is playbacked, too.
I
Effect of dbx
II
Noise Reduction System
(Without noise reduction system)
(When dbx
II
System is ON)
M
Playback
O
M
R
I
P
(
O
Noise level is decreased more
than by 30dB at the playback
mode (Improvement of S/N
ratio)
I
Cautions
(1) When users use the AN6291 and the AN6291S, contract should be made between the dbx Technology Licensing. dbx
licence and trademark should be contacted with the following.
the U.S.A. : dbx Technology Licensing
JAPAN Office : dbx Technology Licensing
433 California Street, Third Floor
San Francisco, California 94104
Tel : 415-765-2801
Fax : 415-765-2141
(2) Capacitor between the Pin6 – 7 and Pin16 –17 is used to cut DC current.
When leakage of DC current is large, encode and decode characteristics is not right value, capacitor's leakage should be as
minimum as possible.
(3) The AN6291 is a low power consumption current type. So effection of wiring resistance is small and oscillation character-ist
of pattern location is good, however, when impedance of the input pin is high, wiring should be shorter because it is easily
effected by external noises.
Tel : 03-3378-0915
Fax : 03-3374-5191
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相關(guān)代理商/技術(shù)參數(shù) |
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| AN6295NK | 制造商:Panasonic Industrial Company 功能描述:IC |
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