Philips TDA8944J 12. Dynamic characteristics

Philips Semiconductors TDA8944J
2 x 7 W stereo BTL audio amplifier
Product specification Rev. 02 — 14 February 2000 8 of 21
9397 750 06861 © 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
Rs=0Ω at the input.
[2] Supply voltage ripple rejection is measured at the output, with a source impedance Rs=0Ω at the input. The ripple voltage is a sine
wave with a frequency fripple 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.
Fig 3. Quiescent current as function of supply
voltage. Fig 4. Quiescent current as function of mode voltage.
handbook, halfpage
50
40
30
20
10
00481216
VCC (V)
Iq
(mA)
20
MGL954
handbook, halfpage
50
40
30
20
10
00481216
VMODE (V)
Iq
(mA)
20
MGL955
VCC = 12 V
Table 8: Dynamic characteristics
V
CC
=12V; 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
Pooutput power THD = 10% 6 7 - W
THD = 0.5% 4 5 - W
THD total harmonic distortion Po= 1 W - 0.03 0.1 %
Gvvoltage gain 31 32 33 dB
Zi(dif) differential input impedance 70 90 110 kΩ
Vn(o) noise output voltage [1] - 90 120 µV
SVRR supply voltage ripple rejection fripple = 1 kHz [2] 50 65 - dB
fripple = 100 Hz
to 20 kHz
[2] -60-dB
Vo(mute) output voltage mute mode [3] --50µV
αcs channel separation Rs=0Ω50 75 - dB