LC78834M Просмотр технического описания (PDF) - SANYO -> Panasonic

Номер в каталоге

Компоненты Описание

производитель

LC78834M

Stereo 18-bit Digital Audio D/A Converter with On-Chip 4 fs Digital Filters

SANYO -> Panasonic 

LC78834M

LC78834M Operation

1. Digital Filters

The LC78834M performs the following processing.

• Oversampling

Two 2× interpolation filters (constructed as FIR filters) are cascade connected.

Two FIR filter stages, a 43rd order and an eleventh order, are cascade connected to perform 4× oversampling.

• De-emphasis

A first-order IIR filter is used for digital de-emphasis.

The filter coefficients are set up to correspond to the sampling frequency fs, which may be 32, 44.1, or 48 kHz.

See page 11 for the filter characteristics when de-emphasis is on.

— De-emphasis on/off

De-emphasis on: EMP pin = high

De-emphasis off: EMP pin = low

— Filter coefficient selection

FS1

L

H

H

L

FS2

L

L

H

H

fs

44.1 kHz

32 kHz 48 kHz

No. 4838-6/14

Share Link: