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TDA8552T

2 x 1.4 W BTL audio amplifiers with digital volume control and headphone sensing

NXP Semiconductors. 

NXP Semiconductors

2 x 1.4 W BTL audio amplifiers with digital

volume control and headphone sensing

Product specification

TDA8552T; TDA8552TS

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

VDD = 5 V; 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.

SYMBOL

Po

THD

Vo(n)

SVRR

Vi(max)

αcs

PARAMETER

output power

total harmonic distortion

noise output voltage

supply voltage ripple

rejection

maximum input voltage

channel separation

CONDITIONS

MIN.

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 −

Po = 60 mW

−

note 1

−

note 2

50

THD = 1%;

−

Gv = −50 to 0 dB

50

TYP.

35

90

25

60

0.04

60

55

−

−

MAX.

−

−

−

−

−

100

−

UNIT

mW

mW

mW

mW

%

μV

dB

1.75

V

−

dB

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).

handbook, full pagewidth

VDD

Vth(UP)

Vfloat(max)

VUP/DOWN

Vfloat(min)

Vth(DOWN)

0

tr

trep

tw

increasing volume

floating

decreasing volume

t

tr

trep

tw

MGM611

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

Fig.3 Timing UP/DOWN pin.

2002 Jan 04

13

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