tfa9843aj NXP Semiconductors, tfa9843aj Datasheet - Page 8

• Manufacturer Part Number: tfa9843aj
• Description: Tfa9843aj 20 W Stereo Power Amplifier With Volume Control
• Manufacturer: NXP Semiconductors

Philips Semiconductors
TFA9843AJ_1
Preliminary data sheet
Fig 3. Voltage gain as a function of volume control
Fig 5. Total harmonic distortion-plus-noise as a
THD
(%)
(dB)
G
10
10
V
100
150
10
50
50
10
N
0
10
1
2
1
2
V
voltage
V
function of output power
0
CC
CC
1
= 18 V
= 18 V; f = 1 kHz; R
2.0
1
[1]
[2]
[3]
The noise output voltage is measured at the output in a frequency range from 20 Hz to 22 kHz
(unweighted), with a source impedance Z
Supply voltage ripple rejection is measured at the output, with a source impedance Z
and with a frequency range from 20 Hz to 22 kHz (unweighted). The ripple voltage is a sine wave with a
frequency f
Output voltage in Mute mode (V
to 22 kHz, including noise.
L
= 4
4.0
10
ripple
V
P
I(VC)
o
001aae340
and an amplitude of 300 mV (RMS), which is applied to the positive supply rail.
(W)
mce488
(V)
10
6.0
Rev. 01 — 28 April 2006
2
I(VC)
= 1.35 V) and an input voltage of 1 V (RMS) in a bandwidth from 20 Hz
Fig 4. Output power (one channel) as a function of
Fig 6. Total harmonic distortion-plus-noise as a
THD N
S
20 W stereo power amplifier with volume control
(%)
= 0
10
10
(W)
P
60
40
20
10
o
0
1
1
2
THD = 10 %
supply voltage for various loads
V
function of frequency
10
8
CC
at the input.
= 18 V; P
R
L
= 1
12
10
2
o
= 1 W; R
16
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
10
L
3
= 4
20
2
TFA9843AJ
10
3
4
8
4
24
S
001aaa446
V
f (Hz)
= 0
CC
mce485
(V)
10
at the input
28
5
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