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

Número de pieza

componentes Descripción

Fabricante

CXA1998BQ

Recording/Playback Equalizer Amplifier

Sony Semiconductor 

CXA1998BQ

3. AMS

(1) AMS output logic

Detection status

AMS OUT (Pin 12)

Signal detection

Low

No signal detection

High

AMS OUT (Pin 12) is an open collector output pin. When a 3.9 kΩ resistor is connected to VCC = 8V:

Low: approximately 0.5V (IOL = 2mA (max.))

High: 8V

Fig. 1 shows the AMS block diagram.

PB OUT1

Inside IC

PB OUT2

SA

LPF

HPF

25kHz

AMS GAIN 100k

9

DET

AMS OUT

AMS GND

11

12 10

AMS TC

GND

VCC VCC

VCC

GND

Fig. 1. AMS Block Diagram

Fig. 2 shows the frequency response of the signal output from HPF.

fC

G

GAIN

(dB)

10

1kHz

25kHz

100kHz

f (Hz)

Fig. 2. Frequency Response

– 22 –

Share Link: