TDA8947J Datasheet, PDF (10/24 Pages) NXP Semiconductors – 4-channel audio amplifier (SE: 1 W to 25 W; BTL: 4 W to 50 W)

Philips Semiconductors
TDA8947J
4-channel audio amplifier
Table 9: Dynamic characteristics SE…continued
V_CC = 18 V; T_amb = 25 °C; R_L = 4 Ω; f = 1 kHz; V_MODE1 = V_CC; V_MODE2 = V_CC; measured in test circuit Figure 12; unless
otherwise specified.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
SVRR supply voltage ripple rejection
V_o(mute)
α_cs
|G_v|
output voltage in mute mode
channel separation
channel unbalance
f_ripple = 1 kHz
f_ripple = 100 Hz to 20 kHz
R_source = 0 Ω
[2] _-
60
-
dB
[2] _-
60
-
dB
[3] _-
-
150
µV
50
60
-
dB
-
-
1
dB
[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.
Table 10: Dynamic characteristics BTL
V_CC = 18 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 12; unless
otherwise specified.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
P_o(BTL)
THD
G_v
Z_i
V_n(o)
SVRR
V_o(mute)
α_cs
|G_v|
BTL output power
total harmonic distortion
voltage gain
input impedance
noise output voltage
supply voltage ripple rejection
output voltage in mute mode
channel separation
channel unbalance
V_CC = 18 V; see Figure 8b
THD = 10 %; R_L = 8 Ω
THD = 0.5 %; R_L = 8 Ω
V_CC = 22 V
THD = 10 %; R_L = 8 Ω
P_o = 1 W
f_ripple = 1 kHz
f_ripple = 100 Hz to 20 kHz
R_source = 0 Ω
16
-
-
-
31
20
[1] _-
[2] _-
[2] _-
[3] _-
50
-
18
-
W
14
-
W
29
-
W
0.05
0.5
%
32
33
dB
30
-
kΩ
200
-
µV
65
-
dB
65
-
dB
-
250
µV
65
-
dB
-
1
dB
[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.
9397 750 10779
Preliminary data
Rev. 01 — 06 February 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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