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.
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, 7.
HA12162FP_HitachiSemiconductor.pdf
