Dynamic characteristics, Application information, Figure 3 – Philips TDA8943SF User Manual
Page 6: Unless otherwise specified, Tda8943sf, Philips semiconductors, 7 w mono btl audio amplifier
Philips Semiconductors
TDA8943SF
7 W mono BTL audio amplifier
Preliminary specification
14 April 1999
6 of 12
9397 750 04877
© Philips Electronics N.V. 1999. All rights reserved.
12. Dynamic characteristics
[1]
The noise output voltage is measured at the output in a frequency range from 20 Hz to 20 kHz (unweighted), with a source impedance
R
source
= 0
Ω
at the input.
[2]
Supply voltage ripple rejection is measured at the output, with a source impedance R
source
= 0
Ω
at the input. The ripple voltage is a sine
wave with a frequency f
ripple
and an amplitude of 100 mV (RMS), which is applied to the positive supply rail.
[3]
Output voltage in mute mode is measured with an input voltage of 1 V (RMS) in a bandwidth of 20 kHz, so including noise.
13. Application information
Table 8:
Dynamic characteristics
V
CC
= 12 V; T
amb
= 25
°
C; R
L
= 8
Ω
; f = 1 kHz; V
MODE
= 0 V; measured in test circuit
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
P
o
output power
THD = 10%
6
7
-
W
THD = 0.5%
4
5
-
W
THD
total harmonic distortion
P
o
= 1 W
-
0.03
0.1
%
G
v
voltage gain
31
32
33
dB
Z
i(dif)
differential input impedance
70
90
110
k
Ω
V
n(o)
noise output voltage
-
90
120
µ
V
SVRR
supply voltage ripple rejection
f
ripple
= 1 kHz
50
-
-
dB
f
ripple
= 100 Hz
to 20 kHz
-
-
dB
V
o(mute)
output voltage
mute mode
-
-
50
µ
V
Fig 3.
Application diagram.
handbook, full pagewidth
MBK943
STANDBY/
MUTE LOGIC
SHORT CIRCUIT
AND
TEMPERATURE
PROTECTION
20
k
Ω
20
k
Ω
5
TDA8943SF
4
3
1
7
6
VCC
VCC
VCC
1000
µ
F
10
µ
F
100 nF
8
2
OUT
+
GND
SVR
OUT
−
IN
−
IN
+
MODE
220 nF
Rsource
Vi
220 nF
MICROCONTROLLER
RL
8
Ω