TDA8552T datasheet(13/28 Pages) PHILIPS

13 / 28 page

1998 Jun 02

Philips Semiconductors

Preliminary speciﬁcation

× 1.4 W BTL audio ampliﬁers with digital

volume control and headphone sensing

TDA8552T; TDA8552TS

AC CHARACTERISTICS (FOR HEADPHONE; RL =32 Ω; CONNECTED SE)

VDD =5V; Tamb =25 °C; f = 1 kHz; total gain setting at 20 dB; VMODE = 0 V; gain select pin is 0 V

(maximum gain = 20 dB); according to Fig.4.

Notes

1. The noise output voltage is measured at the output in a frequency band from 20 Hz to 20 kHz (unweighted),

Rsource =0 Ω, gain select pin is LOW (0 V).

2. Supply voltage ripple rejection is measured at the output, with a source impedance of Rsource =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) is applied to the

positive supply rail, gain select pin is LOW (0 V).

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

output power

THD = 10%; VDD = 3.3 V −

−

THD = 10%; VDD = 5.0 V −

−

THD = 0.5%; VDD = 3.3 V −

−

THD = 0.5%; VDD = 5.0 V −

−

THD

total harmonic distortion

Po =60mW

−

0.04

−

Vo(n)

noise output voltage

note 1

−

100

µV

SVRR

supply voltage ripple

rejection

note 2

−

Vi(max)

maximum input voltage

THD = 1%;

Gv = −50 to 0 dB

−−

1.75

channel separation

−−

Fig.3 Timing UP/DOWN pin.

The rise time (tr) of the pulse may have any value.

handbook, full pagewidth

MGM611

VDD

VUP/DOWN

Vth(UP)

Vth(DOWN)

Vfloat(max)

Vfloat(min)

increasing volume

decreasing volume

floating

trep

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