May 1992

5

Philips Semiconductors

Product specification

FM radio circuit for MTS

TDA7021T

AC CHARACTERISTICS (MONO OPERATION)

(e.m.f. at a source impedance of 75

Ω); r.m.s. noise voltage measured unweighted (f = 300 Hz to 20 kHz); unless

otherwise specified

PARAMETER

CONDITIONS

SYMBOL

MIN.

TYP.

MAX.

UNIT

Sensitivity (e.m.f.)

see Fig.3

for

−3 dB limiting

muting disabled

EMF

−

4,0

−µV

for

−3 dB muting

EMF

−

5,0

−µV

for (S

+N)/N = 26 dB

EMF

−

7,0

−µV

Signal handling (e.m.f.)

THD < 10%;

∆f = ± 75 kHz

EMF

−

200

−

mV

Signal-to-noise ratio

(S+N)/N

−

60

−

dB

Total harmonic distortion

∆f = ± 22,5 kHz

THD

−

0,7

−

%

∆f = ± 75 kHz

THD

−

2,3

−

%

AM suppression of output

voltage

ratio of AM signal

1 kHz;

∆f = 75 kHz)

AMS

−

50

−

dB

Ripple rejection

∆V

f = 1 kHz

RR

−

30

−

dB

Oscillator voltage (r.m.s. value)

−

250

−

mV

Variation of oscillator frequency

with temperature

−

5

−

kHz/

°C

Selectivity

see Fig.9;

no modulation

−

46

−

dB

−

30

−

dB

AFC range

±∆f

rf

−

160

−

kHz

Mute range

±∆f

rf

−

120

−

kHz

Audio bandwidth

∆V

measured with 50

µs

pre-emphasis

B

−

10

−

kHz

AF output voltage

(r.m.s. value)

−

90

−

mV

AF output current

max. d.c. load

−100

−+100

µA

max. a.c. load (peak value)

THD = 10%

−

3

−

mA

∆f

osc

T

amb

∆

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