STEREO 60W-100W DIGITAL AUDIO POWER AMPLIFIER CONTROLLER
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
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.
・High Output Power
100W (VBB=40V, RL=6Ω)
60W (VBB=32V, RL=6Ω)
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)
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
・ 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
・ 100 pin plastic SQFP
Pin lead plating with Pd-free (YDA136-SZ)