TDA8954_1 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 01 — 24 December 2009 19 of 46
NXP Semiconductors
TDA8954
2 × 210 W class-D power amplifier
[1] V
DD
is the supply voltage on pins VDDP1, VDDP2 and VDDA.
[2] V
SS
is the supply voltage on pins VSSP1, VSSP2 and VSSA.
[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
Figure 11.
I
DD(tot)
total positive supply current the sum of the currents through pins
VDDA, VDDP1 and VDDP2
Operating mode; no load; no filter;
no RC-snubber network connected;
- 50 60 mA
I
SS(tot)
total negative supply current the sum of the currents through pins
VSSA, VSSP1 and VSSP2
Operating mode; no load; no filter;
no RC-snubber network connected;
- 65 75 mA
I
stb
standby current - 490 650 μA
Mode select input; pin MODE
V
MODE
voltage on pin MODE referenced to SGND
[4]
0 - 8 V
Standby mode
[4][5]
0 - 0.8 V
Mute mode
[4][5]
2.2 - 3.0 V
Operating mode
[4][5]
4.2 - 5.5 V
Operating mode without TFB
[4][5]
6.6 - 8
I
I
input current V
I
= 5.5 V - 110 150 μA
Audio inputs; pins IN1M, IN1P, IN2P and IN2M
V
I
input voltage DC input
[4]
- 0 - V
Amplifier outputs; pins OUT1 and OUT2
V
O(offset)
output offset voltage SE; Mute mode −37 - +37 mV
SE; Operating mode
[6]
−150 - +150 mV
BTL; Mute mode −30 - +30 mV
BTL; Operating mode
[6]
−210 - +210 mV
Stabilizer output; pin STABI
V
O(STABI)
output voltage on pin STABI Mute and Operating modes; with
respect to VSSA
9.5 10 10.5 V
Temperature protection
T
rst(warn)th_fold
thermal foldback warning
reset
temperature
- 138 - °C
T
act(warn)th_fold
thermal foldback warning
activation temperature
- 139 - °C
T
act(th_fold)
thermal foldback activation
temperature
V
MODE
< 5.5 V - 145 - °C
T
hg(th_fold)
thermal foldback half gain
temperature
V
MODE
< 5.5 V; gain = 24 dB - 153 - °C
T
act(th_prot)
thermal protection activation
temperature
- 154 - °C
Table 9. Static characteristics …continued
V
DD
= 41 V; V
SS
=
−
41 V; f
osc
= 335 kHz; T
amb
= 25
°
C; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
