CXA1998BQ データシートの表示（PDF） - Sony Semiconductor

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CXA1998BQ

Recording/Playback Equalizer Amplifier

Sony Semiconductor 

CXA1998BQ

• Make sure that VDD is 4.0V or more and XRESET is 1.5V or less, and 1µs or more when resetting by

applying CR time constant to XRESET (Pin 27) and turning power ON.

4.0V or more

VDD

(Pin 23)

1.5V or less

XRESET

(Pin 27)

1µs or more

A

• XRESET (Pin 27) input level detection is done by comparison with VDD/2.

The level should be VDD/2 > XRESET during the interval A.

• For resetting with CPU when power is turned ON

4.0V or more

VDD

(Pin 23)

XRESET

(Pin 27)

0V

1µs or more

5.0V

• Examples of AGC control during timer recording

(1) Resets when power is turned ON (AGC function operates).

(2) AGC is turned OFF after AGC inputs (Pins 5 and 32) rise.

(External capacitor charge of AGC TC is discharged.)

(3) AGC is turned ON and timer recording begins.

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