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HA12170NT Datasheet

  • HA12170NT

  • Dolby B- and C-Type Noise Reduction System

  • 63頁(yè)

  • HITACHI

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HA12141NT, HA12142NT, HA12170NT,
HA12161FP, HA12162FP
Dolby B- and C-Type Noise Reduction System
ADE-207-036B (Z)
3rd Edition
Jun. 1999
Description
HA12141/142NT, HA12170NT, HA12161/162FP are silicon monolithic bipolar IC series providing dual
channel Dolby B- and C-type noise reduction* in one chip.
Functions
鈥?/div>
Dual Dolby B/C-type NR processor
鈥?/div>
NR OFF/B/C control switch
鈥?/div>
MPX by-pass / Encode / Decode (MPX OFF / REC / PB) control switch
鈥?/div>
MPX Filter Drive Circuit
Features
鈥?/div>
Low external parts count
鈥?/div>
R-C spectrum skewing network using passive component
鈥?/div>
External capacitors are E-3 series (small values)
鈥?/div>
Several time constant capacitors built into the IC
鈥?/div>
Separate REC/PB input and output. Unprocessed signal output available in the encode and decode
modes.
鈥?/div>
Common PCB pattern is available with HA12134A series (Dolby B NR), because these ICs offer
similar pin layout.
鈥?/div>
3 type PB-out level (300 mV, 580 mV, 775 mV)
鈥?/div>
2 type package (DP-30S, FP-28D)
鈥?/div>
Wide range of operating supply voltage (7.5 V to 16 V)
*
Dolby is a trademark of Dolby Laboratories Licensing Corporation.
A license from Dolby Laboratories Licensing Corporation is required for the use of this IC.

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