TDA8950_2
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 02 — 11 June 2009
13 of 39
NXP Semiconductors
TDA8950
2
×
150 W class-D power amplifier
11. Static characteristics
[1]
V
P
is the supply voltage on pins VDDP1, VDDP2 and VDDA.
[2]
The circuit is DC adjusted at V
P
=
±
12.5 V to
±
42.5 V.
[3]
Unbalance protection activated when V
DDA
> 2
× |
V
SSA
|
OR
|
V
SSA
|
> 2
×
V
DDA
.
[4]
With respect to SGND (0 V).
[5]
The transition between Standby and Mute modes has hysteresis, while the slope of the transition between Mute and Operating modes is
determined by the time-constant of the RC network on pin MODE; see
[6]
DC output offset voltage is gradually applied to the output during the transition between Mute and Operating modes. The slope caused
by any DC output offset is determined by the time-constant of the RC network on pin MODE.
[7]
At a junction temperature of approximately T
act(th_fold)
−
5
°
C, gain reduction commences and at a junction temperature of approximately
T
act(th_prot)
, the amplifier switches off.
Table 8.
Static characteristics
V
P
=
±
35 V; f
osc
= 345 kHz; T
amb
= 25
°
C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Supply
V
P
supply voltage
Operating mode
±
12.5
±
30
±
40
V
V
P(ovp)
overvoltage protection supply voltage
Standby, Mute modes;
V
DD
−
V
SS
85
-
90
V
V
P(uvp)
undervoltage protection supply voltage V
DD
−
V
SS
20
-
25
V
V
P(ubp)
unbalance protection supply voltage
-
33
-
%
I
q(tot)
total quiescent current
Operating mode; no load; no
filter; no RC-snubber network
connected
-
50
75
mA
I
stb
standby current
measured at 30 V
-
480
650
µ
A
Mode select input; pin MODE
V
MODE
voltage on pin MODE
referenced to SGND
0
-
6
V
Standby mode
0
-
0.8
V
Mute mode
2.2
-
3.0
V
Operating mode
4.2
-
6
V
I
I
input current
V
I
= 5.5 V
-
110
150
µ
A
Audio inputs; pins IN1M, IN1P, IN2P and IN2M
V
I
input voltage
DC input
-
0
-
V
Amplifier outputs; pins OUT1 and OUT2
V
O(offset)
output offset voltage
SE; Mute mode
-
-
±
25
mV
SE; Operating mode
-
-
±
150
mV
BTL; Mute mode
-
-
±
30
mV
BTL; Operating mode
-
-
±
210
mV
Stabilizer output; pin STABI
V
O(STABI)
output voltage on pin STABI
Mute and Operating modes;
with respect to VSSD
9.3
9.8
10.3
V
Temperature protection
T
act(th_prot)
thermal protection activation
temperature
-
154
-
°
C
T
act(th_fold)
thermal foldback activation
temperature
closed loop SE voltage gain
reduced with 6 dB
-
153
-
°
C
