Philips Semiconductors
TFA9843J
2-channel audio amplifier (2 x SE or 1 x BTL)
Preliminary data Rev. 02 — 19 January 2004 8 of 21
9397 750 12587
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
12. Dynamic characteristics
[1] The noise output voltage is measured at the output in a frequency range from 20 Hz to 22 kHz (unweighted), with a source impedance
R
source
=0Ω at the input.
[2] Supply voltage ripple rejection is measured at the output, with a source impedance R
source
=0Ω 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 f
ripple
and an amplitude of 300 mV (RMS), which
is applied to the positive supply rail.
[3] Output voltage in mute mode (V
MODE
= 7 V) and an input voltage of 1 V (RMS) in a bandwidth from 20 Hz to 22 kHz, so including noise.
[1] The noise output voltage is measured at the output in a frequency range from 20 Hz to 22 kHz (unweighted), with a source impedance
R
source
=0Ω at the input.
[2] Supply voltage ripple rejection is measured at the output, with a source impedance R
source
=0Ω 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 f
ripple
and an amplitude of 300 mV (RMS), which
is applied to the positive supply rail.
Table 9: Dynamic characteristics SE
V
CC
=18V; T
amb
=25
°
C; R
L
=4
Ω
; f = 1 kHz; V
MODE
=V
CC
; measured in test circuit Figure 19; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
P
o
output power THD = 10 %; R
L
=4Ω 7 8.5 - W
THD = 0.5 % R
L
=4Ω - 6.5 - W
V
CC
=22V;
THD = 10 %; R
L
=4Ω
-14-W
THD total harmonic distortion P
o
= 1 W - 0.1 0.5 %
G
v
SE voltage gain 25 26 27 dB
Z
i
input impedance 40 60 - kΩ
V
n(o)
noise output voltage
[1]
- 150 - µV
SVRR supply voltage ripple
rejection
f
ripple
= 1 kHz
[2]
-60-dB
f
ripple
= 100 Hz to 20 kHz
[2]
-60-dB
V
o(mute)
output voltage in mute mode
[3]
- - 150 µV
α
cs
channel separation R
source
=0Ω 50 60 - dB
|Gv| channel unbalance - - 1 dB
Table 10: Dynamic characteristics BTL
V
CC
=18V; T
amb
=25
°
C; R
L
=8
Ω
; f = 1 kHz; V
MODE
=V
CC
; measured in test circuit Figure 20; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
P
o
output power THD = 10 %; R
L
=8Ω 16 18 - W
THD = 0.5 %; R
L
=8Ω -14 W
V
CC
=22V;
THD = 10 %; R
L
=8Ω
-29-W
THD total harmonic distortion P
o
= 1 W - 0.05 0.5 %
G
v
BTL voltage gain 31 32 33 dB
Z
i
input impedance 20 30 - kΩ
V
n(o)
noise output voltage
[1]
- 200 - µV
SVRR supply voltage ripple
rejection
f
ripple
= 1 kHz
[2]
-65-dB
f
ripple
= 100 Hz to 20 kHz
[2]
-65-dB
V
o(mute)
output voltage in mute mode
[3]
- - 250 µV
α
cs
channel separation R
source
=0Ω 50 65 - dB
|Gv| channel unbalance - - 1 dB