YDA138 View Datasheet(PDF) - Yamaha Corporation

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YDA138

STEREO 10W DIGITAL AUDIO POWER AMPLIFIER

Yamaha Corporation 

YDA138

D- 3

STEREO 10W DIGITAL AUDIO POWER AMPLIFIER

■Overview

YDA138 (D-3) is a high efficient digital audio power amplifier IC that operates with a single 12V power supply.

An audio power amplifier with a maximum output of 10W (RL=8Ω)×2ch or 20W (RL=4Ω)×1ch can be configured

with one chip.

YDA138 has a “Pure Pulse Direct Speaker Drive Circuit” which directly drives speakers while reducing distortion of

pulse output signal and reducing noise on the signal, and realizes the highest standard low distortion rate characteristics

and low noise characteristics as 10W-class of output digital amplifier IC.

In addition, circuit design with fewer external parts can be made depend on the condition of use because corresponds to

filter less.

YDA138 has 50mW (RL=32Ω)×2ch Class AB headphone amplifiers.

YDA138 provides Over-current protection function for speaker output terminals, IC thermal protection function, POP

noise reduction function, and AM interference measures function as well as power-down function and output mute

function.

■Features

Digital Amplifier

・Continuous maximum output

10 W×2ch ＠VDDP=12.0V, RL=8Ω, THD+N=10%

20 W×1ch ＠VDDP=12.0V, RL=4Ω, THD+N=10%

・Efficiency

88 % ＠VDDP=12.0V, RL=8Ω, Po=10W

・Distortion Rate (THD+N)

0.02 % ＠VDDP=12.0V, RL=8Ω, Po=1.0W

・S/N Ratio

103dB ＠VDDP=12.0V, RL=8Ω, Po=10W, VOL[1:0]=H,H

・Channel Separation

-70dB ＠VDDP=12.0V, RL=8Ω, VOL[1:0]=H,H

Class AB Headphone Amplifier

・Maximum output

50mW×2ch ＠VDDP=12.0V, RL=32Ω, THD+N=10%

・Distortion Rate(THD+N)

0.01 % ＠VDDP=12.0V, RL=32Ω, Pho=30mW

・S/N Ratio

95dB ＠VDDP=12.0V, RL=32Ω, Pho=20mW, VOL[1:0]=H,H

Others

・Operating power supply range

9.0V to 13.5V

・Multi-channel synchronizing operation by

Master/Slave switching function

・Carrier frequency switching function

524kHz/466kHz

・Sleep function with SLEEPN terminal

・Output muting function with MUTEN terminal

・Over-current protection function

・Thermal protection function

・Clock stop detection function

・Pop noise reduction function

・AM interference measures function

・Analog input/BTL (Bridge-Tied Load) output

・42-pin plastic SSOP

Pin lead plating with Pd free (YDA138-EZ)

YDA138 CATALOG

CATALOG No.:LSI-4DA138A20

2005.3

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