YDA139 Datasheet - YAMAHA CORPORATION

YDA139 STEREO 2.5W DIGITAL AUDIO POWER AMPLIFIER

of operating functions *Digital Amplifier Function YDA139 has digital amplifiers with analog and digital input, PWM pulse output, Maximum output of 2.5W(RL=4 )×2ch. Distortion of PWM pulse output signal and noise of the signal is reduced by adopting “Pure Pulse Direct Speaker Drive Circuit” Firs.

YDA139 D- 4 STEREO 2.5W DIGITAL AUDIO POWER AMPLIFIER Overview YDA139 (D-4) is a digital audio power amplifier IC with maximum output of 2.5W (RL=4 )×2ch. YDA139 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 the same class of output digital amplifier IC. In addition, circuit desig.

YDA139 Features

* Maximum output WLCSP25 2.5 W×2ch (VDDP=VDDA=5.0V, RL=4Ω, THD+N=10%) 1.5 W×2ch (VDDP=VDDA=5.0V, RL=8Ω, THD+N=10%) SSOP24 2.5 W×2ch （VDDP=VDDA=5.0V, RL=4Ω, THD+N=10%） 1.3 W×2ch （VDDP=VDDA=5.0V, RL=8Ω, THD+N=10%） Efficiency www.DataSheet4U.com WLCSP25 91 % (Analog input mode, VDDP=VDDA=5.0V, RL=8Ω, Po=

YDA139_YAMAHACORPORATION.pdf