CXA1998BQ Ver la hoja de datos (PDF) - Sony Semiconductor

Número de pieza

componentes Descripción

Fabricante

CXA1998BQ

Recording/Playback Equalizer Amplifier

Sony Semiconductor 

CXA1998BQ

1. System control mode

Playback and recording equalizer

(1) Playback equalizer (120µs/70µs)

A-EQ (Pin 2)

L

H

DECK-AB

(serial data

D10 (Pin 25))

L

120µs

(DECK A)

70µs

(DECK A)

H According to B-EQ control

B-EQ (Pin 3)

L

M/H

According to A-EQ control

120µs

(DECK B)

70µs

(DECK B)

(2) Playback mute (Pin 13)

ON/OFF control is performed by 11-bit serial data interface D7 (Pin 26). A capacitor for setting the switching

time constant is connected.

Time constant = 20kΩ × C

(3) Recording equalizer (Normal, CrO2, Metal)

B-EQ (Pin 3)

L

M

REC MODE

NORMAL (TYPE I)

CrO2 (TYPE II)

H

METAL (TYPE IV)

(4) Recording mute (Pin 14)

ON/OFF control is performed by 11-bit serial data interface D11 (Pin 26). A fader function is achieved using a

time constant circuit formed with the external capacitor and incorporated 20kΩ resistor.

(5) FP CAL (Pin 48)

The standard resistor setting is 27kΩ, but when resistance value is larger, fo (Hz) is lower, and when

resistance value is smaller, fo (Hz) is higher. (fo: high-band peak frequency)

(6) GP CAL (Pin 1)

The standard resistor setting is 27kΩ, but when resistance value is larger, high-band peak gain is larger, and

when resistance value is smaller, high-band peak gain is smaller.

– 17 –

Share Link: