CXA1898Q View Datasheet(PDF) - Sony Semiconductor

Part Name

Description

Manufacturer

CXA1898Q

Recording/Playback Equalizer Amplifier

Sony Semiconductor 

3. AMS

(1) AMS output logic

Detection status

AMS OUT (Pin 2)

Signal detection No signal detection

L

H

AMS OUT (Pin 2) is an open collector output pin. When a 2.2kΩ resistor is connected to VDD:

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

High : VDD

Fig. 1 shows the AMS block diagram.

PB OUT1

Inside IC

PB OUT2

SA

HPF

LPF

25kHz

AMS GAIN 100k

48

DET

1 AMS OUT 2

AMS FIL

AMS GND

3

CXA1898Q

GND

VDD VDD

VDD

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

– 20 –

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