TFA9842AJ 데이터 시트보기 (PDF) - NXP Semiconductors.
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TFA9842AJ Datasheet PDF : 18 Pages
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Philips Semiconductors
TFA9842AJ
7.5 W stereo power amplifier with volume control
[2] Supply voltage ripple rejection is measured at the output, with a source impedance ZS = 0 Ω at the input
and with a frequency range from 20 Hz to 22 kHz (unweighted). The ripple voltage is a sine wave with a
frequency fripple and an amplitude of 300 mV (RMS), which is applied to the positive supply rail.
[3] Output voltage in Mute mode (VI(VC) = 1.35 V) and an input voltage of 1 V (RMS) in a bandwidth from 20 Hz
to 22 kHz, so including noise.
50
GV
(dB)
0
001aae340
40
Po
(W)
30
001aaa445
−50
−100
20
10 RL = 1 Ω
2Ω 3Ω 4Ω
8Ω
−150
0
2.0
4.0
6.0
VI(VC) (V)
VCC = 17 V
Fig 3. Voltage gain as a function of volume control
voltage
0
8
12
16
20
24
28
VCC (V)
THD = 10 %
Fig 4. Output power (one channel) as a function of
supply voltage for various SE loads
102
THD+N
(%)
10
1
10−1
001aaa419
10
THD+N
(%)
1
10−1
001aaa446
10−2
10−1
1
10
102
Po (W)
VCC = 17 V; SE; f = 1 kHz; RL = 4 Ω
Fig 5. Total harmonic distortion-plus-noise as a
function of output power
10−2
10
102
103
104
105
f (Hz)
VCC = 17 V; SE; Po = 1 W; RL = 4 Ω
Fig 6. Total harmonic distortion-plus-noise 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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