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2001 Jul 23 9
Philips Semiconductors Preliminary specification
Power amplifier with load detection and
auto BTL/SE selection
TDA8586
Fig.5 Timing diagram including diagnostics.
handbook, full pagewidth
MGR027
state
condition
This voltage must remain present.
Whatever the load detection has found the mode of operation will be inverted.
Toggling between the 2 modes is possible.
The mode is overruled only from
BTL to SE when the diagnostic pin
is excited with a pulse of 10 V.
standby
load detect
mute
no load detect
mute
no clipping/shorts
on
clipping
on
short-circuit
on
V
P
V
P
MSO
diagnostic
information
diagnostic
overrule
mode select
amplifier
output
buffer/amplifier
output
0
0
3 V
5 V
10 V
0
5 V
0
0.5V
P
0
0.5V
P
0
0
9 V
short-circuit to supply
short-circuit over load
short-circuit to ground
short-circuit to supply
short-circuit over load
short-circuit to ground
SE detected
BTL detected
SE detection
BTL detection
minimum 1 s