NJU8789 データシートの表示（PDF） - Japan Radio Corporation

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コンポーネント説明

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NJU8789

Monaural BTL Output Clock-less Switching Driver for Class D Amplifier

Japan Radio Corporation  

NJU38575859

FUNCTIONAL DESCRIPTION

(1) IN terminal (Input Signal)

The input signals are PWM signals or PDM signals.

(2) OUTP and OUTN terminal (Output Signal)

The OUTP and OUTN generate PMW output signal The NJU8789 drives a speaker by the BTL output, and

OUTP is a positive output and OUTN is a negative outputs.

A switching regulator with a high response against a voltage fluctuation is the best selection for the VDDO,

which is the power supply for output drivers.

(3) Standby Control Function

By setting the STBYb terminal to “L”, the NJU8789 becomes standby condition. During standby condition,

OUTP and OUTN are in Hi-Z.

The STBYb terminal must be connected to VDD when not using the Standby Function.

Ver.2009-01-21

-3-

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