HA12142NT データシートの表示（PDF） - Hitachi -> Renesas Electronics

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HA12142NT

Dolby B- and C-Type Noise Reduction System

Hitachi -> Renesas Electronics 

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

• Dual Dolby B/C-type NR processor

• NR OFF/B/C control switch

• MPX by-pass / Encode / Decode (MPX OFF / REC / PB) control switch

• MPX Filter Drive Circuit

Features

• Low external parts count

• R-C spectrum skewing network using passive component

• External capacitors are E-3 series (small values)

• Several time constant capacitors built into the IC

• Separate REC/PB input and output. Unprocessed signal output available in the encode and decode

modes.

• Common PCB pattern is available with HA12134A series (Dolby B NR), because these ICs offer

similar pin layout.

• 3 type PB-out level (300 mV, 580 mV, 775 mV)

• 2 type package (DP-30S, FP-28D)

• 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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