2002 Jan 14
15
Philips Semiconductors
Preliminary specification
4
×
44 W into 4
Ω
or 4
×
75 W into 2
Ω
quad BTL car radio power amplifier
TDA8591J
Notes
1. With open MUTE/ON pin, the TDA8591J will switch to operating mode (see Section 7.3)
2. V
OO(det)
is the offset voltage across the load. Pin OFFCAP should never be left open-circuit. If pin OFFCAP is
connected to one of the PGND pins, the offset detection is switched off (see Section 14.4).
Table 2
Mode selection
STBY and MUTE/ON inputs (see Table 2)
V
STBY
control voltage on pin STBY standby mode
0
−
0.8
V
V
STBY(hys)
voltage hysteresis on
pin STBY
−
0.2
−
V
V
MUTE/ON
voltage on pin MUTE/ON
mute mode; V
STBY
> 2.5 V
−
−
0.8
V
operating mode; V
STBY
> 2.5 V;
note 1
5.5
−
V
P
V
I
STBY
STBY pin current
V
STBY
= 5 V
−
−
80
µ
A
I
MUTE/ON
MUTE/ON pin current
V
MUTE/ON
= 5.5 V
−
25
−
µ
A
DIAG output (see Figs 3 to 6)
V
DIAG
diagnostic output voltage
I
DIAG(sink)
= 250
µ
A
DDD, protection circuits and
temperature pre-warning
active
−
0.3
0.8
V
offset diagnostic active
2.0
2.8
3.2
V
I
L
leakage current
V
DIAG
= 14.4 V
−
−
1
µ
A
THD
total harmonic distortion at
clip detection
V
DIAG
< 0.8 V
−
1.5
−
%
V
OO(det)
output offset voltage
detection; note 2
2.0 < V
DIAG
< 3.2 V
2.5
4.5
6.5
V
T
vj
virtual junction temperature
temperature pre-warning;
V
DIAG
< 0.8 V
135
145
−
°
C
soft thermal clipping;
G
v
=
−
3 to
−
23 dB
−
155
−
°
C
temperature shut-down
−
170
−
°
C
STBY
MUTE/ON
AMPLIFIER MODE
0
don’t care
standby (off)
1
0
mute (DC settled)
1
1
operating
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
