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

Número de pieza

componentes Descripción

Fabricante

CXA1998BQ

Recording/Playback Equalizer Amplifier

Sony Semiconductor 

CXA1998BQ

Pin Description

Pin

No.

Symbol

DC

voltage

I/O I/O

resistance

1 GP CAL 1.2V — —

(Ta = 25°C, VCC = 8V, VDD = 5V, no signal, RESET ON)

Equivalent circuit

Description

Vcc

Vcc

×2

1

30k

147

GND

GND

Connects a resistor

for determining the

high-band peak gain

of recording equalizer.

Reference setting

resistance is 27kΩ.

VCC

VCC

2 A EQ

—

I—

147

2

Deck A equalizer

switch.

Low: 120µs EQ

High: 70µs EQ

GND

VCC

GND

3 B EQ

2.5V

(OPEN)

147 50k 5k

I 53kΩ 3

5k

GND

GND

VCC

Deck B equalizer

switch.

Low: NORMAL TAPE,

120µs EQ

Medium: Cro2 TAPE,

70µs EQ

High: METAL TAPE,

70µs EQ

4 AGC TC 0.0V — —

VCC

×2

VCC

×2

200

500

4

147

×2

500

×4

5k

100k 200

GND

GND

Connects a resistor

and capacitor for

determining AGC

attack/recovery time

constants.

–3–

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