Ac characteristics – Philips TDA8542 User Manual
Page 7
1998 Apr 01
7
Philips Semiconductors
Product specification
2
×
1 W BTL audio amplifier
TDA8542
AC CHARACTERISTICS
V
CC
= 5 V; T
amb
= 25
°
C; R
L
= 8
Ω
; f = 1 kHz; V
MODE
= 0 V; measured in test circuit Fig.3; unless otherwise specified.
Notes
1. Gain of the amplifier is 2
×
R2/R1 in test circuit of Fig.3.
2. The noise output voltage is measured at the output in a frequency range from 20 Hz to 20 kHz (unweighted), with a
source impedance of R
S
= 0
Ω
at the input.
3. Supply voltage ripple rejection is measured at the output, with a source impedance of R
S
= 0
Ω
at the input.
The ripple voltage is a sine wave with a frequency of 1 kHz and an amplitude of 100 mV (RMS), which is applied to
the positive supply rail.
4. Supply voltage ripple rejection is measured at the output, with a source impedance of R
S
= 0
Ω
at the input.
The ripple voltage is a sine wave with a frequency between 100 Hz and 20 kHz and an amplitude of 100 mV (RMS),
which is applied to the positive supply rail.
5. Output voltage in mute position is measured with a 1 V (RMS) input voltage in a bandwidth of 20 kHz, so including
noise.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
P
o
output power
THD = 10%
1
1.2
−
W
THD = 0.5%
0.6
0.9
−
W
THD
total harmonic distortion
P
o
= 0.5 W
−
0.15
0.3
%
G
v
closed loop voltage gain
note 1
6
−
30
dB
Z
i
differential input impedance
−
100
−
k
Ω
V
no
noise output voltage
note 2
−
−
100
µ
V
SVRR
supply voltage ripple rejection
note 3
50
−
−
dB
note 4
40
−
−
dB
V
o
output voltage in mute condition
note 5
−
−
200
µ
V
α
cs
channel separation
40
−
−
dB