TDA8944J Datasheet, PDF (8/21 Pages) NXP Semiconductors – 2 x 7 W stereo Bridge Tied Load BTL audio amplifier

Philips Semiconductors
TDA8944J
2 x 7 W stereo BTL audio amplifier
50
handbook, halfpage
Iq
(mA)
40
MGL954
50
handbook_I,_qhalfpage
(mA)
40
MGL955
30
30
20
20
VCC = 12 V
10
10
0
0
4
8
12
16
20
VCC (V)
Fig 3. Quiescent current as function of supply
voltage.
0
0
4
8
12
16
20
VMODE (V)
Fig 4. Quiescent current as function of mode voltage.
12. Dynamic characteristics
Table 8: Dynamic characteristics
V_CC = 12 V; T_amb = 25 °C; R_L = 8 Ω; f = 1 kHz; V_MODE = 0 V; measured in test circuit Figure 14; audio pass band
22 Hz to 22 kHz; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
P_o
output power
THD = 10%
THD = 0.5%
6
7
-
W
4
5
-
W
THD
G_v
Z_i(dif)
V_n(o)
SVRR
total harmonic distortion
voltage gain
differential input impedance
noise output voltage
supply voltage ripple rejection
P_o = 1 W
f_ripple = 1 kHz
f_ripple = 100 Hz
to 20 kHz
-
31
70
[1] _-
[2] ₅₀
[2] _-
0.03
0.1
%
32
33
dB
90
110
kΩ
90
120
µV
65
-
dB
60
-
dB
V_o(mute)
α_cs
output voltage
channel separation
mute mode
R_s = 0 Ω
[3] _-
-
50
µV
50
75
-
dB
[1] The noise output voltage is measured at the output in a frequency range from 20 Hz to 20 kHz (unweighted), with a source impedance
R_s = 0 Ω at the input.
[2] Supply voltage ripple rejection is measured at the output, with a source impedance R_s = 0 Ω at the input. The ripple voltage is a sine
wave with a frequency f_ripple and an amplitude of 707 mV (RMS), which is applied to the positive supply rail.
[3] Output voltage in mute mode is measured with an input voltage of 1 V (RMS) in a bandwidth of 20 kHz, so including noise.
9397 750 06861
Product specification
Rev. 02 — 14 February 2000
© Philips Electronics N.V. 2000. All rights reserved.
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