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YDA136

STEREO 60W-100W DIGITAL AUDIO POWER AMPLIFIER CONTROLLER

Yamaha Corporation 

YDA136

D- 60

STEREO 60W-100W DIGITAL AUDIO POWER AMPLIFIER CONTROLLER

■Outline

YDA136 (D-60) is a high efficient and high output digital audio power amplifier controller IC.

By combining a general purpose PowerMOSFET (hereafter called PowerMOSFET) which is connected with YDA136

and BTL, it is able to compose a high efficient audio power amplifier such as 60Wx2ch (Supplied voltage=32V, RL=6Ω)

and 100Wx2ch (Supplied voltage=40V, RL=6Ω).

YDA136 has 24bit 192kHz (max) DAC and 6 to -73dB（1dB Step） of electron volumes in addition to a digital amplifier

controller, and supports a digital audio signal input. Furthermore, it also supports an analog audio signal input with DAC

bypasses.

YDA136 realizes a high-standing audio characteristic that is lower noise and distortion rate by performing an analog

feedback from PowerMOSFET output, and by using Yamaha’s unique modulation method.

YDA136 also equips a function (Over current detection function) which protects a circuit from a short of speaker output

terminal (after the LC filter) and a function (Supplied voltage detection function) which prevents a malfunction by

detecting a power supply falling.

Moreover, it has a function (Clock stop detection function) to protect a circuit by detecting a stop termination of PWM

carrier clock and a function (High-temperature detection function) to protect a circuit by detecting the unusual

high-temperature condition of it-self.

At last, by making three YDA136 to daisy-chain connection, the audio system of 6ch is easily realizable.

■Features

・High Output Power

100W (VBB=40V, RL=6Ω)

60W (VBB=32V, RL=6Ω)

・Low Distortion Rate(THD+N)

0.05% (Po=50W, 1kHz, RL=6Ω, at digital input)

0.03% (Po=50W, 1kHz, RL=6Ω, at analog input)

・High S/N Ratio

100dB (VBB=40V, A-filter, Gain=21.7+6dB, RL=6Ω,

at digital input

・Low Residual Noise

100µV (VBB=40V, Gain=21.7+6dB, at digital input)

70µV (VBB=40V, Gain=21.7+6dB, at analog input)

・Channel Separation

80dB (1kHz, Po=50W)

・ Supports 24bit Digital input and Analog input

・ Built-in 6 to -73dB（1dB Step） of electron volume

・ Multi-channel synchronous operation by switching

Master/Slave function.

・ Protect reset function

・ Hard mute function

・ Monophonic function

・ Unusual operation detection protection function

(Over current, Supplied voltage, Speaker terminal

short, Clock stop, Heat）

・ Pop noise rejection function at the time of

power-up

・ 100 pin plastic SQFP

Pin lead plating with Pd-free (YDA136-SZ)

YDA136 CATALOG

CATALOG No.:LSI-4DA136A20

2005.4

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