TDA9820 datasheet(7/20 Pages) PHILIPS

7 / 20 page

1996 Nov 20

Philips Semiconductors

Product speciﬁcation

Multistandard/dual channel TV FM

intercarrier sound demodulator

TDA9820

CHARACTERISTICS

All voltages are measured to GND (pin 13); VP =5V; Tamb =25 °C; ∆fi = ±50 kHz; fmod = 1 kHz;

V1, 2, 3, 16/15 = 10 mV (RMS value); measurements taken in Fig.5; unless otherwise speciﬁed.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supply (pin 14)

supply voltage

4.5

5.0

8.8

supply current

Source selector and limiter-ampliﬁer 1 (pins 1, 2, 3 and 16)

DC input voltage

activated input

2.25

2.5

2.75

not activated input

−−

0.1

input resistance

activated input

480

600

720

Ω

not activated input

−−

600

Ω

Vi(rms)

input signal (RMS value)

−

150

250

µV

allowed input signal (RMS value)

200

−−

αct

crosstalk attenuation

not activated input to

activated input

−

Limiter-ampliﬁer 2

V15

DC input voltage

2.25

2.5

2.75

V15(rms)

input signal (RMS value)

; note 1

−

150

250

µV

input signal for mute off (RMS value)

0.7

1.0

1.5

allowed input signal (RMS value)

200

−−

R15

input resistance

480

600

720

Ω

hysteresis of level detector

PLL FM demodulators VCO1 and VCO2

fVCO1

free-running frequencies

R11 =27kΩ;

see Table 1

−

4.5

−

MHz

−

5.5

−

MHz

−

6.0

−

MHz

−

6.5

−

MHz

fVCO2

free-running frequencies

R11 =27kΩ;

see Table 1

−

4.7

−

MHz

−

5.7

−

MHz

−

6.7

−

MHz

∆ffr

negative/positive free-running

frequency spread

−−

∆f

drift of free-running frequencies

Tamb = 0 to 70 °C

−

500

750

kHz

∆ffr(shift)

shift of free-running frequencies

4.5 V < VP < 8.8 V

−

200

300

kHz

∆ffr(ar)

negative/positive adjustment range of

free-running frequencies

R11 =22kΩ

−−

MHz

R11

adjustment resistance for free-running

frequencies (pin 11)

−

Ω

--------------

40 dB

--------------

40 dB

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