2002 Jan 14
8
Philips Semiconductors
Preliminary specification
4
×
44 W into 4
Ω
or 4
×
75 W into 2
Ω
quad BTL car radio power amplifier
TDA8591J
handbook, halfpage
MGU489
amplifier
output
STBY
MUTE/ON
DIAG
play normal
mute
t (ms)
standby
operating
Fig.3
Diagnostic waveforms: standby, mute and
operating mode sequence.
Pull-up resistor = 47 k
Ω.
handbook, halfpage
MGT605
normal
active
DDD
normal
amplifier
output
DIAG
t (ms)
Pull-up resistor = 47 k
Ω.
Fig.4
Diagnostic waveforms: dynamic distortion
detection function.
handbook, halfpage
MGT604
amplifier
output
DIAG
short-circuit
across load
20 ms
t (ms)
Fig.5
Diagnostic waveforms: short-circuit across
load.
Pull-up resistor = 47 k
Ω.
andbook, halfpage
MGU498
short to
GND
short to
VP
amplifier
output
DIAG
GND
20 ms
20 ms
VP
t (ms)
Fig.6
Diagnostic waveforms: short-circuit to
V
P
pin or GND.
Pull-up resistor = 47 k
Ω.