CXA2509AQ View Datasheet(PDF) - Sony Semiconductor

Part Name

Description

Manufacturer

CXA2509AQ

Playback Equalizer Amplifier with Music Sensor

Sony Semiconductor 

CXA2509AQ

5. Operating mode control method

The CXA2509AQ has a playback equalizer amplifier select switch (TAPESW), head input select switch

(DRSW), music sensor mode select switch (MSMODE) and music sensor switch (MSSW).

The operating modes for each switch are shown in the following table.

Pin No.

Pin name

17 INSW

18 TAPESW

19 DRSW

20 MSMODE

21 MSSW

Pin voltage

Low (OPEN)

TAPE

120µs

PBIN FORWARD

G1

MS ON

High

AUX

70µs

PBIN REVERSE

G2

MS OFF

Notes on Operation

1. Playback equalizer amplifier

All playback equalizer amplifier characteristics are determined by the external constants. Use the parts

which satisfies the accuracy required for the playback equalizer amplifier.

2. Music sensor

The current on DIREF (Pin 25), and the resistance and capacitance connected to G2FB (Pin 10) and G1FB

(Pin 11) determine the detection level and the HPF cut-off frequency.

The response time is determined by the resistance and capacitance connected to MSTC (Pin 12).

Use the parts which satisfies the accuracy required for the music sensor.

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