TDA8950
NXP Semiconductors
2 × 150 W class-D power amplifier
11. Static characteristics
Table 7.
Static characteristics
VP = ±35 V; fosc = 345 kHz; Tamb = 25 °C; unless otherwise specified.
Symbol
Supply
VP
Parameter
Conditions
Min
Typ
Max
Unit
[1]
supply voltage
±12.5 ±35
±40
90
V
VP(ovp)
VP(uvp)
Iq(tot)
overvoltage protection supply voltage non-operating; VDD − VSS
undervoltage protection supply voltage VDD − VSS
85
20
-
-
V
-
25
V
total quiescent current
Operating mode; no load; no
filter; no RC-snubber network
connected
50
75
mA
Istb
standby current
-
480
600
µA
Mode select input; pin MODE
[2]
[2][3]
[2][3]
[2][3]
VMODE
voltage on pin MODE
referenced to SGND
Standby mode
Mute mode
0
-
6.0
0.8
3.0
6.0
150
V
0
-
V
2.2
4.2
-
-
V
Operating mode
VI = 5.5 V
-
V
II
input current
110
µA
Audio inputs; pins IN1M, IN1P, IN2P and IN2M
VI input voltage
Amplifier outputs; pins OUT1 and OUT2
VO(offset) output offset voltage
[2]
DC input
-
0
-
V
SE; mute
-
-
-
-
-
-
-
-
±15
mV
mV
mV
mV
[4]
[4]
SE; operating
BTL; mute
±150
±21
BTL; operating
±210
Stabilizer output; pin STABI
VO(STABI)
output voltage on pin STABI
mute and operating; with
respect to VSSP1
9.3
9.8
10.3
V
Temperature protection
Tact(th_prot) thermal protection activation
temperature
-
-
154
153
-
-
°C
°C
[5]
Tact(th_fold) thermal foldback activation
temperature
closed loop SE voltage gain
reduced with 6 dB
[1] The circuit is DC adjusted at VP = ±12.5 V to ±42.5 V.
[2] With respect to SGND (0 V).
[3] The transition between Standby and Mute mode has hysteresis, while the slope of the transition between Mute and Operating mode is
determined by the time-constant of the RC-network on pin MODE; see Figure 8.
[4] DC output offset voltage is gradually applied to the output during the transition between the 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.
[5] At a junction temperature of approximately Tact(th_fold) − 5 °C the gain reduction will commence and at a junction temperature of
approximately Tact(th_prot) the amplifier switches off.
TDA8950_1
© NXP B.V. 2008. All rights reserved.
Preliminary data sheet
Rev. 01 — 9 September 2008
13 of 39
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