TDA9874H datasheet(48/56 Pages) PHILIPS

48 / 56 page

1998 Apr 27

Philips Semiconductors

Preliminary speciﬁcation

Digital TV sound demodulator/decoder

TDA9874H

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 2

−−

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

−

Audio performance

THD + N

total harmonic distortion + 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”; quasi peak; from

external/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

−−

VCXO and clock generation

VCXO

Crystal input

input capacitance

−−

Vbias(DC)

DC bias voltage

Ri = 100 kΩ

3.5

3.63

3.7

Crystal output

Vosc(p-p)

oscillation amplitude

(peak-to-peak value)

−

1.4

−

Vbias(DC)

DC bias voltage

2.3

2.53

2.8

mutual conductance at

24.576 MHz

16.6

17.6

18.8

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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