HA12135A Datasheet Dolby B-Type Noise Reduction

Manufacturer: Hitachi Semiconductor (now Renesas)

Datasheet Details

Part number	HA12135A
Manufacturer	Hitachi Semiconductor (now Renesas)
File Size	130.68 KB
Description	Dolby B-Type Noise Reduction
Download	HA12135A Download (PDF)

The HA12134A, HA12135A, HA12136A are silicon monolithic bipolar IC series providing dual channel Dolby B-type noise reduction system* in one chip.

The circuit is used primarily to reduce the level of background noise introduced during recording and playback of audio signals on magnetic tape.

HA12134A series provide the following functions and

HA12134A, HA12135A, HA12136A Dolby B-Type Noise Reduction System ADE-207-016B (Z) 3rd Edition Jun.

Functions.
Dual Dolby B-type NR processor.
NR ON/OFF control switch.
Record (encode)/playback (decode) control switch. Features.
Separate record/playback input and output. Unprocessed signal output available in the encode and decode modes.
Reduction of external components count.
Small capacitor value for the reference voltage.
NR ON/OFF switching and REC/PB switching are provided internally.
2-type package (DP-16, FP.

Part Number	Description
HA12133MP	EQUALLZER IC
HA12134A	Dolby B-Type Noise Reduction
HA12136A	Dolby B-Type Noise Reduction
HA12141NT	Dolby B- and C-Type Noise Reduction
HA12142NT	Dolby B- and C-Type Noise Reduction
HA12155NT	Audio Signal Processor
HA12157NT	Audio Signal Processor
HA12160	Audio Signal Processor
HA12161FP	Dolby B- and C-Type Noise Reduction
HA12162FP	Dolby B- and C-Type Noise Reduction