YDA139-EZ View Datasheet(PDF) - Yamaha Corporation

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YDA139-EZ

STEREO 2.5W DIGITAL AUDIO POWER AMPLIFIER

Yamaha Corporation 

YDA139

●Mode Selection Function

YDA139 has mode selection function for selecting analog input and digital input. In the digital input mode, DAC output

signal is output in 12 dB(fixed) of gain. In the analog input mode, analog signal that was input to LIN/RIN is output in a

gain in accordance with the setting of GAIN[1:0] terminal. In the mixing mode, the digital input and analog input is mixed

and output.

MOD[1:0] Setting and Operation Mode

MOD1

MOD0

Function

L

L

Digital Input Mode

L

H

Analog Input Mode (DAC Power-down)

H

L

Mixing Mode

H

H

Reserved

Note) MOD[1:0]=H,H is already reserved by the system.

●Power-down Function

When PDN terminal is L, the power-down mode is selected in YDA139. The mode stops all the circuit functions and

minimizes power consumption. At this time, the output stage of the digital amplifier is disabled (WL*1). In addition, the

High Speed Recovery function allows recovery to the normal operation at 0.8msec（tPDR） when setting PDN to H in the

power-down state.

Note)*1: “WL” means output disabled (weak pull-down output).

The relation between power down recovery time (tPDR) and CIN is as follows.

6

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