NXP Semiconductors TDA8948J, Product Data Sheet

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TDA8948J_1 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 01 — 27 February 2008 9 of 26
NXP Semiconductors
TDA8948J
4-channel audio amplifier
11. Static characteristics
[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.
[4] The DC output voltage, with respect to ground, is approximately 0.5 V
CC
.
[5]
∆
V
O(offset)
=
|
V
OUT+
−
V
OUT
−
|
[6] Channels 3 and 4 can only be set to mute or on mode by MODE2 when V
MODE1
> V
CC
−
2.0 V.
12. Dynamic characteristics
Table 8. Static characteristics
V
CC
= 17 V; T
amb
= 25
°
C; R
L
= 8
Ω
; V
MODE1
= V
CC
; V
MODE2
= V
CC
; V
I
= 0 V; measured in test circuit Figure 11 ; unless
otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
Supply
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
Output pins
V
O
output voltage -
[4]
- 9 - V
∆
V
O(offset)
differential output voltage offset BTL mode
[5]
- - 170 mV
Mode selection pins
V
MODE1
voltage on pin MODE1 on mode V
CC
−
2.0 - V
CC
V
mute mode 4.5 - V
CC
−
3.5 V
standby mode 0 - 0.8 V
V
MODE2
voltage on pin MODE2 on mode: channels 3 and 4
[6]
V
CC
−
2.0 - V
CC
V
mute mode: channels 3 and 4 0 - V
CC
−
3.5 V
I
MODE1
current on pin MODE1 0 V < V
MODE1
< (V
CC
−
3.5 V) - - 20
µ
A
I
MODE2
current on pin MODE2 0 V < V
MODE2
< (V
CC
−
3.5 V) - - 20
µ
A
Table 9. Dynamic characteristics 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.
Symbol Parameter Conditions Min Typ Max Unit
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
THD total harmonic distortion P
o
= 1 W - 0.1 0.5 %
G
v
voltage gain - 25 26 27 dB
Z
i
input impedance - 40 60 - k
Ω