NJU7505XD Просмотр технического описания (PDF) - Japan Radio Corporation

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NJU7505XD

BAND PASS FILTER FOR AUDIO SPECTRUM ANALYZER DISPLAY

Japan Radio Corporation  

NJU7505

! APPLICATION CIRCUIT (1)

AUDIO IN

Lch

AUDIO OUT

RESONANCE

CIRCUIT

NJU7305

AUDIO IN

Rch

AUDIO OUT

RESONANCE

CIRCUIT

*1

*2 ATT.

A IN

NJU7505

OSC1

OSC2

13K

220pF

RST/CLKO

VSS

RD

AOUT

*3

A/D

µCOM

DISPLAY DRIVER

DISPLAY

*1 ) The capacitor for AC coupling connected to the AIN terminal should be needed.

*2 ) Connecting the attenuator, the dynamic range of the display can be changed.

*3 ) When the voltage of the output terminal of the µCOM gets over the VSS level, the diode should be connected between

the RST/CLKO terminal and the output of the µCOM.

-8-

Ver.2004-06-04

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