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Philips Semiconductors
TDA8946J
2 x 15 W stereo BTL audio amplifier
Product specification Rev. 02 — 14 March 2000 8 of 23
9397 750 06863
© Philips Electronics N.V. 2000. All rights reserved.
12. Dynamic characteristics
[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
=0Ω at the input.
[2] Supply voltage ripple rejection is measured at the output, with a source impedance R
S
=0Ω at the input. The ripple voltage is a sine
wave with a frequency f
ripple
and an amplitude of 700 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.
Fig 3. Quiescent supply current as function of supply
voltage.
Fig 4. Quiescent supply current as function of mode
voltage.
handbook, halfpage
50
40
30
20
10
0
0481216
V
CC
(V)
I
q
(mA)
20
MGU005
handbook, halfpage
50
40
30
20
10
0
0481216
V
MODE
(V)
I
q
(mA)
20
MGU006
V
CC
= 18 V
12 V
Table 8: Dynamic characteristics
V
CC
=18V; 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% 13 15 - W
THD = 0.5% 10 11.5 - W
THD total harmonic distortion P
o
= 1 W - 0.03 0.1 %
G
v
voltage gain 31 32 33 dB
Z
i(dif)
differential input impedance 70 90 110 kΩ
V
n(o)
noise output voltage
[1]
- 90 120 µV
SVRR supply voltage ripple rejection f
ripple
= 1 kHz
[2]
50 65 - dB
f
ripple
= 100 Hz
to 20 kHz
[2]
-60-dB
V
o(mute)
output voltage mute mode
[3]
--50µV
α
cs
channel separation R
S
=0Ω 50 75 - dB