TDA8542 Datasheet, PDF (7/20 Pages) NXP Semiconductors – 2 x 1 W BTL audio amplifier

Philips Semiconductors
2 × 1 W BTL audio amplifier
Product specification
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.
SYMBOL
PARAMETER
P_o
output power
THD
G_v
Z_i
V_no
SVRR
total harmonic distortion
closed loop voltage gain
differential input impedance
noise output voltage
supply voltage ripple rejection
V_o
output voltage in mute condition
α_cs
channel separation
CONDITIONS
THD = 10%
THD = 0.5%
P_o = 0.5 W
note 1
note 2
note 3
note 4
note 5
MIN.
1
0.6
−
6
−
−
50
40
−
40
TYP.
1.2
0.9
0.15
−
100
−
−
−
−
−
MAX.
−
−
0.3
30
−
100
−
−
200
−
UNIT
W
W
%
dB
kΩ
µV
dB
dB
µV
dB
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.
1998 Apr 01
7