NJU8752 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJU8752

Analog Signal Input Class D Amplifier for Piezo Speaker

Japan Radio Corporation  

NJU8752

TYPICAL APPLICATION CIRCUIT

10uF 0.1uF

VDD

VDD(1)

VSS(14)

0.47uF

IN

IN(2)

10uF

COM(13)

MUTE(4)

STBY(11)

TEST1(3)

TEST2(12)

OUTP(6)

OUTN(9)

VDDO(7)

VSS(5)

10uH

10uH

0.1uF

0.1uF

0.1uF 10uF VDD

VDDO(8)

VSS(10)

0.1uF 10uF VDD

Figure 2. Application Circuit example

Piezo Speaker

Note 5) De-coupling capacitors must be connected between each power supply pin and GND.

Note 6) A switching regulator with a high response against a voltage fluctuation is ideal for the VDDO to obtain

better T.H.D. performance.

Note 7) Testing actual samples in your system is highly recommended. The typical application circuit is one of

examples.

Note 8) The transition time of MUTE and STBY signals must be less than 100us. Otherwise, a malfunction

might occur.

Note 9) (1)-(14) indicates pin number.

-6-

[CAUTION]

The specifications on this databook are only

given for information , without any guarantee

as regards either mistakes or omissions. The

application circuits in this databook are

described only to show representative usages

of the product and not intended for the

guarantee or permission of any right including

the industrial rights.

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