TDA8542 datasheet(7/20 Pages) PHILIPS

7 / 20 page

1998 Apr 01

Philips Semiconductors

Product speciﬁcation

× 1 W BTL audio ampliﬁer

TDA8542

AC CHARACTERISTICS

VCC =5V; Tamb =25 °C; RL =8 Ω; f = 1 kHz; VMODE = 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 RS =0 Ω at the input.

3. Supply voltage ripple rejection is measured at the output, with a source impedance of RS =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 RS =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

output power

THD = 10%

1.2

−

THD = 0.5%

0.6

0.9

−

THD

total harmonic distortion

Po = 0.5 W

−

0.15

0.3

closed loop voltage gain

note 1

−

differential input impedance

−

100

−

Ω

Vno

noise output voltage

note 2

−−

100

µV

SVRR

supply voltage ripple rejection

note 3

−−

note 4

−−

output voltage in mute condition

note 5

−−

200

µV

αcs

channel separation

−−

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