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AN7354SC

Panasonic Semiconductor
Part Number AN7354SC
Manufacturer Panasonic Semiconductor
Description Dolby B/C-type Noise Reduction
Published Mar 26, 2005
Detailed Description ICs for Cassette, Cassette Deck AN7354SC Dolby* B/C-type Noise Reduction s Overview The AN7354SC is an IC for 2 ch. Dol...
Datasheet PDF File AN7354SC PDF File

AN7354SC
AN7354SC

Overview
ICs for Cassette, Cassette Deck AN7354SC Dolby* B/C-type Noise Reduction s Overview The AN7354SC is an IC for 2 ch.
Dolby B/C-Type noise reduction process.
It requires fewer external parts and incorporates the functions of line-output muting and level detection and the delay circuit.
0.
45 Unit : mm 1 42 skewing circuit not requiring external parts • Line-output muting circuit built-in • PB input delay circuit built-in • Built-in level detection circuit for automatic level adjustment and level meter • ON/OFF of NR, B-/C-type, REC.
/PB, MPX and muting function, and Hi/Lo changeover of level detection gain, directly-controllable by microcomputer 0.
1±0.
1 1.
0 21 22 2.
0±0.
2 REC.
OUT 1500pF 0.
47µF 24 + 23 9.
5±0.
3 11.
5±0.
3 * Dolby symbols are the trademarks of Dolby Laboratory Licensing Corporation.
The use of this products requires the approval of Dolby Laboratories Licensing Corporation in advance.
42-Lead SSOP Package (SSOP042-P-0450) s Block Diagram VCC REC.
IN PB IN 1500pF 5.
6kΩ MPX 2.
4kΩ REC.
/PB MPX METER OFF/ 0dB ON /20dB + 2.
2µF 0.
1µF + 1µF + LINE OUT 100kΩ LEVEL METER OUT 1500pF 0.
47µF 1µF + 42 41 1µF + 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 + 25 0.
15 0.
9 0.
3 21.
25±0.
3 22 SS HLS LLS SS HLS LLS 15 16 17 0.
47µF 18 + 19 0.
47µF 20 + 21 LINE OUT 1500pF LEVEL METER OUT 1500pF REC.
OUT s Features • Built-in spectral Delay Mute Rect Bias LOGIC Rect Delay Mute 1 + 1µF 2 22kΩ 3 + 1µF 4 5 6 7 2.
4kΩ 8 9 10 11 + 12 0.
1µF 13 + 1µF 14 MPX PB IN 1500pF 5.
6kΩ NR C/B ON/ -type OFF Mute ON/OFF VEE REC.
IN + 2.
2µF 0.
35±0.
1 100kΩ AN7354SC s Absolute Maximum Ratings (Ta=25˚C) Parameter Supply Voltage Supply Current (Ta=75˚C) Power Dissipation (Ta=75˚C) Operating Ambient Temperature Storage Temperature Symbol VCC ICC (+) ICC (–) PD Topr Tstg ICs for Cassette, Cassette Deck Rating ±6.
7 +22 –22 295 –20 ~ + 75 –55 ~ + 125 Unit V mA mW ˚C ˚C s Recommended Operating Range (Ta=25˚C) Parameter Operating Supply Voltage R...


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