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 10 of 26
NXP Semiconductors
TDA8948J
4-channel audio amplifier
[1] The noise output voltage is measured at the output in a frequency range from 20 Hz to 22 kHz (unweighted), with a source impedance
R
SOURCE
= 0
Ω
at the input.
[2] Supply voltage ripple rejection is measured at the output, with a source impedance R
SOURCE
= 0
Ω
at the input and with a frequency
range from 20 Hz to 22 kHz (unweighted). The ripple voltage is a sine wave with a frequency f
ripple
and an amplitude of 300 mV (RMS),
which is applied to the positive supply rail.
[3] Output voltage in mute mode is measured with V
MODE1
= V
MODE2
= 7 V, and V
i
= 1 V (RMS) in a bandwidth from 20 Hz to 22 kHz,
including noise.
[1] The noise output voltage is measured at the output in a frequency range from 20 Hz to 22 kHz (unweighted), with a source impedance
R
SOURCE
= 0
Ω
at the input.
[2] Supply voltage ripple rejection is measured at the output, with a source impedance R
SOURCE
= 0
Ω
at the input and with a frequency
range from 20 Hz to 22 kHz (unweighted). The ripple voltage is a sine wave with a frequency f
ripple
and an amplitude of 300 mV (RMS),
which is applied to the positive supply rail.
[3] Output voltage in mute mode is measured with V
MODE1
= V
MODE2
= 7 V, and V
i
= 1 V (RMS) in a bandwidth from 20 Hz to 22 kHz,
including noise.
V
n(o)
output noise voltage -
[1]
- 150 -
µ
V
SVRR supply voltage ripple rejection f
ripple
= 1 kHz
[2]
- 60 - dB
f
ripple
= 100 Hz to 20 kHz
[2]
- 60 - dB
V
o(mute)
mute output voltage -
[3]
- - 150
µ
V
α
cs
channel separation R
SOURCE
= 0
Ω
50 60 - dB
|∆
G
v
|
voltage gain difference - - - 1 dB
Table 9. Dynamic characteristics SE
…continued
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
Table 10. Dynamic characteristics 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
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 P
o
= 1 W - 0.05 0.5 %
G
v
voltage gain - 31 32 33 dB
Z
i
input impedance - 20 30 - k
Ω
V
n(o)
noise output voltage -
[1]
- 200 -
µ
V
SVRR supply voltage ripple rejection f
ripple
= 1 kHz
[2]
- 65 - dB
f
ripple
= 100 Hz to 20 kHz
[2]
- 65 - dB
V
o(mute)
mute output voltage -
[3]
- - 250
µ
V
α
cs
channel separation R
SOURCE
= 0
Ω
50 65 - dB
|∆
G
v
|
voltage gain difference - - - 1 dB