Philips Semiconductors
TFA9842AJ
7.5 W stereo power amplifier with volume control
15
Po
(W)
12
001aaa447
10
PD
(W)
8
001aaa422
9
6
6
4
3
2
0
8
10
12
14
16
18
VCC (V)
THD = 10 %; SE; RL = 4 Ω; f = 1 kHz
Fig 7. Output power as a function of supply voltage
0
0
4
8
12
16
20
Po (W)
VCC = 17 V; SE; RL = 4 Ω
Fig 8. Total power dissipation as a function of channel
output power per channel (worst case, both
channels driven)
0
αcs
(dB)
−20
−40
−60
−80
001aaa423
0
SVRR
(dB)
−20
−40
−60
001aaa424
−100
10
102
103
104
105
f (Hz)
−80
10
102
103
104
105
f (Hz)
VCC = 17 V; SE; RL = 4 Ω
Fig 9. Channel separation as a function of frequency
(no bandpass filter applied)
VCC = 17 V; SE; ZS = 0 Ω; Vripple = 300 mV (RMS); a
bandpass filter of 20 Hz to 22 kHz has been applied;
inputs short-circuited.
Fig 10. Supply voltage ripple rejection as a function of
frequency
TFA9842AJ_1
Preliminary specification
Rev. 01 — 28 April 2006
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
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