YDA142

9

Monaural Function

When MONO terminal is “H”, YDA142 enters Monaural Mode.

In this mode, L channel input signal is output.

The mode can output up to 19W power into a 4Ω load resistor by short-circuiting between OUTPL and OUTPR terminals

and between OUTML and OUTMR terminals.

In addition, LINEOUTL terminal outputs L channel input signals but LINEOUTR terminal gets undefined.

Switch between Monaural Mode and Stereo Mode during SLEEP Mode or a power shutdown state.

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Protection Function

YDA142 has the following protection functions: Over-current Protection function, Thermal Protection function, Clock Stop

Protection function, Under-voltage Malfunction Prevention function, and DC Input Detection function.

Over-current Protection Function

This is a function to make the Over-current Protection Mode (disables the output stage of a digital amplifier in conjunction

with “L” output to PROTN terminal) by detecting a short-circuiting (Ground short/Power supply short/Short between

terminals) in the output stage of a digital amplifier.

This mode can be cancelled by power supply shutdown or SLEEPN terminal “L” setting.

In addition, the mode can be automatically resumed after the over-current detection by connecting PROTN terminal to

SLEEPN terminal.

Thermal Protection Function

This is a function to make the Thermal Protection Mode (disables the output stage of a digital amplifier in conjunction with

“L” output to PROTN terminal) by detecting extraordinary high temperature on YDA142. This mode can be cancelled by

sufficient temperature decrease, power supply shutdown, or SLEEPN terminal “L” setting.

In addition, the mode can be automatically resumed after the high temperature detection by connecting PROTN terminal

to SLEEPN terminal.

Clock Stop Protection Function

This is a function to make the Clock Stop Protection Function (disables the output stage of a digital amplifier) when a

The mode can be cancelled by returning the carrier clock frequency to the normal value.

Under-voltage Malfunction Prevention Function

This is a function to make the Under Voltage Protection Function (disables the output stage of a digital amplifier in

conjunction with setting “High-Z” state to PROTN terminal) when a voltage at 12V power supply terminal (PVDDREG)

The built-in 5V regulator is also disabled when a voltage at 12V power supply terminal becomes lower than the Threshold

The mode can be cancelled when “L” is set to SLEEPN terminal or a voltage of each power supply terminal becomes