CXA2566M データシートの表示（PDF） - Sony Semiconductor

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CXA2566M

Headphone Stereos

Sony Semiconductor 

CXA2566M

Description of Operation

1) Det Pin (Pin 7)

This is the external pin for the detector during AVLS mode. The attack time is determined by the internal

charging buffer and the external capacitor. The recovery time is determined by both the 80k impedance inside

the IC and the external capacitor.

2) RF_Out (Pin 9) / RF_In (Pin 10)

These are the two external pin for the power supply's ripple filter. It provides a regulated 0.92 × Vcc to the

internal circuits. The rejection ratio is determined by the resistors inside the IC and the two external capacitors.

32k

VCC

100k

368k

VCC

Regulated

10

RF_In

9

RF_Out

3) C Pin (Pin 13)

Left

32k

32k

32k

32k

Right

32k

21k 65k 32k

13

C

32k

32k

Out

Left

32k

The bass boost circuitry is designed to provide a 9dB

gain at 100Hz for C = 0.1µF.

The cut off frequency is determined by:

Out

Right

32k

1

fcutoff =

2π × 16k × C

–9–

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