Philips TFA9843AJ Philips Semiconductors TFA9843AJ

TFA9843AJ_1 © Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Preliminary data sheet Rev. 01 — 28 April 2006 9 of 19
Philips Semiconductors TFA9843AJ
20 W stereo power amplifier with volume control
THD = 10 %; RL = 4 Ω; f = 1 kHz VCC = 18 V; RL = 4 Ω
Fig 7. Output power as a function of supply voltage Fig 8. Total power dissipation as a function of channel
output power per channel (worst case, both
channels driven)
828
50
0
10
20
30
40
12
Po
(W)
16 20 24VCC (V)
mce491
020
Po (W)
10
0
2
4
6
8
4
Ptot
(W)
81216
mce507
VCC = 18 V; RL = 4 ΩVCC = 18 V; ZS = 0 Ω; Vripple = 300 mV (RMS); a
bandpass filter of 20 Hz to 22 kHz has been applied;
inputs short-circuited.
Fig 9. Channel separation as a function of frequency
(no bandpass filter applied) Fig 10. Supply voltage ripple rejection as a function of frequency
−100
0
−80
−60
−40
−20
mce495
10
αcs
(dB)
f (Hz)
102103104105−80
−60
−40
−20
0
mce497
10
SVRR
(dB)
f (Hz)
102103104105