CXA1898Q データシートの表示（PDF） - Sony Semiconductor

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CXA1898Q

Recording/Playback Equalizer Amplifier

Sony Semiconductor 

CXA1898Q

Pin

No.

Symbol

DC

voltage

I/O

I/O

resistance

Equivalent circuit

VCC

VCC

Description

10 A EQ

—

I

—

147

10

A deck equalizer

switch.

Low: 120µs EQ

High: 70µs EQ

11 B EQ

2.5V

(when I

open)

12 RMUTE1 I —

I

13 R MUTE1

14 R MUTE2

15 SPEED

5.0V

(when

reset)

(when

Pin 25

O

(DATA)

is set to

high)

16 PB MUTE

53kΩ

—

—

GND

GND

VCC

VCC

147 50k 5k

11

5k

GND

GND

B deck equalizer switch.

Low: Normal Tape,

120µs EQ

High: CrO2 Tape, 70µs

EQ

Medium: Metal Tape,

70µs EQ

VCC

147

12

GND

VCC

50µA

20k 20k

×2

×2

2.7V

GND

Recording mute

ON/OFF switch.

Low: Mute OFF

High: Mute ON

∗ Fader function is

realized by the

external time

constant circuit.

Connects Pin 13

(RMUTE1).

Output for recording

mute ON/OFF switch

control signal.

Outputs D11 from Pin

VDD

VCC 25 (DATA).

13

14

15 × 4

16 GND

×4

5k

5k

20k

GND

Output for recording/

playback equalizer

speed switch control

signal. Outputs D9 from

Pin 25 (DATA).

Low: Normal Speed

High: High Speed

(1.7 times)

Output pin for playback

mute ON/OFF switch

control signal. Outputs

D7 from Pin 25 (DATA).

Connects a resistor to

VDD for Pins 13 to 16.

–4–

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