YDA136 Datasheet, PDF (22/32 Pages) YAMAHA CORPORATION – D- 60 STEREO 60W-100W DIGITAL AUDIO POWER AMPLIFIER CONTROLLER

YDA136
●Clock Stop Detection Function
YDA136 becomes clock stop detection mode, when a career clock frequency exceeds a maximum (F_C1) of operation or it is
less than a minimum (F_C1).
Hard mute is carried out in clock stop detection mode.
If a career clock frequency enters within normal limits, clock stop detection mode will be canceled and hard mute will be
canceled.
●High Temperature Detection Function
YDA136 is acting as the internal monitor of the temperature of YDA136 self, and when it becomes an unusual temperature
exceeding Tjmax, it serves as high temperature detection mode.
In high temperature detection mode, a PROTN terminal is set to "L" at the same time it carries out hard mute.
Then, a PROTN terminal is set to "H" at the same time it cancels high temperature detection mode and cancels hard mute,
when temperature falls and it becomes a normal range.
●Self-recovery function
By connecting a PROTN terminal and a PRSTN terminal, when a PROTN terminal is set to "L" by over-current detection
and high temperature detection, it can be set as fixed time protection reset mode, and hard mute release (automatic return)
can be carried out after starting standby time (T_WAIT).
22