TDA8948J_1
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 01 — 27 February 2008
2 of 26
NXP Semiconductors
TDA8948J
4-channel audio amplifier
4.
Quick reference data
[1]
A minimum load is required at supply voltages of V
CC
> 22 V; R
L
= 3
Ω
for SE and R
L
= 6
Ω
for BTL.
[2]
The amplifier can deliver output power with non-clipping output signals into nominal loads as long as the
ratings of the IC are not exceeded.
[3]
With a load connected at the outputs the quiescent current will increase.
Table 1.
Quick reference data
SE: V
CC
= 17 V; T
amb
= 25
°
C; R
L
= 4
Ω
; f
i
= 1 kHz; V
MODE1
= V
CC
; V
MODE2
= V
CC
; measured in test
circuit
Figure 11
; unless otherwise specified.
BTL: V
CC
= 17 V; T
amb
= 25
°
C; R
L
= 8
Ω
; f = 1 kHz; V
MODE1
= V
CC
; V
MODE2
= V
CC
; measured in test
circuit
Figure 11
; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
V
CC
supply voltage
operating
[1]
9
17
26
V
no (clipping signal)
[2]
-
-
28
V
I
q
quiescent current
V
CC
= 17 V; R
L
=
∞
[3]
-
100
145
mA
I
stb
standby current
-
-
-
10
µ
A
P
o(SE)
SE output power
V
CC
= 17 V;
see
Figure 7
:
THD = 10 %;
R
L
= 4
Ω
6.5
8
-
W
THD = 0.5 %;
R
L
= 4
Ω
-
6
-
W
V
CC
= 20 V:
THD = 10 %;
R
L
= 4
Ω
-
12
-
W
P
o(BTL)
BTL output power
V
CC
= 17 V;
see
Figure 7
:
THD = 10 %;
R
L
= 8
Ω
14
16
-
W
THD = 0.5 %;
R
L
= 8
Ω
-
12
-
W
V
CC
= 20 V:
THD = 10 %;
R
L
= 8
Ω
-
24
-
W
THD
total harmonic
distortion
SE; P
o
= 1 W
-
0.1
0.5
%
BTL; P
o
= 1 W
-
0.05
0.5
%
G
v
voltage gain
SE
25
26
27
dB
BTL
31
32
33
dB
SVRR
supply voltage ripple
rejection
SE:
f
ripple
= 1 kHz
[4]
-
60
-
dB
f
ripple
=
100 Hz to 20 kHz
[4]
-
60
-
dB
BTL:
f
ripple
= 1 kHz
[4]
-
65
-
dB
f
ripple
=
100 Hz to 20 kHz
[4]
-
65
-
dB
