YDA137 Datasheet, PDF (5/20 Pages) YAMAHA CORPORATION – D- 2 STEREO 5W DIGITAL AUDIO POWER AMPLIFIER

YDA137
●Digital Terminals
/SLEEP (Pin No.28)
/SLEEP terminal is a sleep control terminal. It controls digital amplifiers and headphone amplifiers for both L and R
channels at the same time.
When /SLEEP terminal is L, all IC functions are stopped to enter the sleep state (hereinafter described as Sleep Mode).
When /SLEEP terminal is changed from L to H, normal operating condition is established after sufficient time (starting
time) for each reference voltage to reach the regular potential.
/MUTE (Pin No.2)
/MUTE terminal is a mute control terminal. It controls digital amplifiers and headphone amplifiers for both L and R
channels at the same time.
When /MUTE terminal is L, IC enters a mute-state. （hereinafter described as Mute Mode） In this condition, OUTPL,
OUTML, OUTPR, and OUTMR terminal become WL, and HPOL, HPOR terminal become reference level output.
(hereinafter described as RF)
When /MUTE terminal is H, it enters a normal operating condition.
/MONO (Pin No.3)
/MONO terminal is a monaural output control terminal. Digital amplifier and headphone amplifier are controlled at the
same time.
When /MONO terminal is L, it enters a monaural output state.（hereinafter described as Monaural Mode）
When /MONO terminal is H, it enters a normal operating condition.
HP (Pin No.26)
HP terminal is a headphone control terminal. Operation switching between digital amplifier and headphone amplifier is
controlled.
When HP terminal is H, it enters the headphone output mode. At this time, digital amplifier enters the Mute Mode.
When HP terminal is L, it enters the digital amplifier output mode. At this time, headphone amplifier enters the Mute
Mode.
/PROT (Pin No.27)
/PROT terminal is a warning signal output terminal for over-current and Over-Temperature Detection Function. When
failure is detected in either function, L is output. In normal operation, H is output.
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