TDA9873HS datasheet(3/40 Pages) PHILIPS

3 / 40 page

2000 Apr 04

Philips Semiconductors

Product speciﬁcation

Multistandard dual carrier stereo sound decoder

TDA9873H

QUICK REFERENCE DATA

VCC =5V; Tamb =25 °C; B/G standard (fSC1 = 5.5 MHz, fSC2 = 5.742 MHz, SC1/SC2=7dB, ∆fAF = 27 kHz,

fmod = 1 kHz, L = R, stereo mode); input level for ﬁrst sound carrier Vi(FM)(rms) =50mV; fref = 4.000 MHz; measured in

application circuits of Figs 7 and 8; unless otherwise speciﬁed.

Notes

1. Condition for B/G, I and D/K standard: VCC = 5 V and ∆f = 27 kHz (m = 54%). Condition for M standard: VCC =5V

and

∆f = 13.5 kHz; 6 dB gain added internally to compensate smaller deviation.

2. The maximum total system identification time ‘on’ for a channel change is equal to maximum value of tident(on) plus

tI2C(read-out). The maximum total system identification time ‘off’ for a channel change is equal to maximum value of

tident(off) plus tI2C(read-out). The fast mode is proposed mainly during search tuning, program or channel select. If the

channel is selected, the identification response should be switched to normal mode for improved reliability. However

due to the transition from fast to normal mode, the identification bits are not valid for one integrator period. Therefore

the transmitter mode detected during the fast mode has to be stored before changing to normal mode. The storage

has to be kept for two seconds (maximum value of tident(on) in the normal mode) from the moment of transition.

The identification can now operate in the normal mode until the next tuning action.

3. R modulated and L monitored.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

VCC

supply voltage

4.5

6.6

ICC

supply current

Vo(rms)

AF output level (RMS value)

54% modulation; note 1

400

500

600

Vo(cl)(rms)

AF output clipping level

(RMS value)

THD < 1.5%

1400

−−

fi(FM)

FM-PLL operating frequencies

(switchable)

ﬁrst sound carrier

M standard

−

4.5

−

MHz

B/G standard

−

5.5

−

MHz

I standard

−

6.0

−

MHz

D/K standard

−

6.5

−

MHz

second sound carrier

M standard

−

4.72

−

MHz

B/G standard

−

5.74

−

MHz

D/K (1) standard

−

6.26

−

MHz

D/K (2) standard

−

6.74

−

MHz

D/K (3) standard

−

5.74

−

MHz

S/NW

weighted signal-to-noise ratio

(complete signal path)

CCIR 468-4 weighted; quasi

peak; dual mode;

B/G standard; note 1

−

tident(on)

total identiﬁcation time on for

identiﬁcation mode change

normal mode; note 2

0.35

−

fast mode; note 2

0.1

−

0.5

Vi(FM)(rms)

FM-PLL input voltage (RMS value)

sensitivity for pull-in

first sound carrier

−−

6mV

second sound carrier

−−

1mV

cs(AF)(stereo)

AF channel separation (stereo

mode; complete signal path)

B/G standard; note 3

without alignment

−

I2C-bus alignment

−

αct(AF)(dual)

AF crosstalk attenuation (dual

mode; complete signal path)

−

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