TDA9874A datasheet(21/68 Pages) PHILIPS

21 / 68 page

1999 Dec 03

Philips Semiconductors

Preliminary speciﬁcation

Digital TV sound demodulator/decoder

TDA9874A

toff(ident)

total identiﬁcation time off

slow mode

−−

medium mode

−−

fast mode

−−

0.5

Mono and external inputs

Vi(nom)(rms)

nominal level input voltage

(RMS value)

note 1

−

500

−

Vi(cl)(rms)

clipping level input voltage

(RMS value)

THD < 3%; note 5

1250

1400

−

input resistance

note 5

Ω

Analog audio outputs

Vo(clip)(rms)

clipping level output voltage

(RMS value)

THD < 3%

1400

−−

output resistance

150

250

375

Ω

RL(AC)

AC load resistor

−−

Ω

RL(DC)

DC load resistor

−−

Ω

Co(L)

output load capacitor

−

Voffset(DC)

static DC offset voltage

−

mute

mute suppression

nominal input signal from

any source; fi = 1 kHz;

note 1

−−

Bline

bandwidth

from external and mono

source;

−3 dB bandwidth

−−

kHz

Gro

roll-off gain at 14.5 kHz

from any source

−3

−2

−

PSRR

power supply ripple rejection

fripple = 70 Hz;

Vripple = 100 mV (peak);

CVref =47 µF; signal from

I2S-bus

−

Audio performance

THD + N

total harmonic distortion plus

noise

Vin/out = 1 V (RMS);

fi = 1 kHz; bandwidth

20 Hz to 20 kHz; from

external/mono input to

output copy

−

0.1

0.3

S/N

signal-to-noise ratio

reference voltage

V0 = 1.4 V (RMS);

fi = 1 kHz; “CCIR468-2”;

quasi peak; from external or

mono input to output copy

−

crosstalk attenuation

between any analog input

pairs; fi = 1 kHz

−−

αcs

channel separation

between left and right of

external input pair

−−

between left and right of

output pair

−−

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

TDA9874A Datasheet(PDF) 21 Page - NXP Semiconductors

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