TDA9809 Просмотр технического описания (PDF) - Philips Electronics

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TDA9809

Single standard multimedia IF-PLL and FM radio demodulator

Philips Electronics 

Philips Semiconductors

Single standard multimedia IF-PLL and FM

radio demodulator

Preliminary specification

TDA9809M

70

handbook, halfpage

60

S/N

(dB)

50

40

30

20

10

0

−60

−40

0.06

0.6

MHA960

−20

6

10

0

20

Vi(VIF)(rms)(dB)

60

600

Vi(VIF)(rms)(mV)

Fig.4 Typical signal-to-noise ratio as a function of

IF input voltage.

handbook, halfpage

13.2 dB

27 dB

3.2 dB

13.2 dB

27 dB

10 dB

SC CC

PC

BLUE

SC CC

PC

YELLOW

MED685 - 1

SC = sound carrier, with respect to sync level.

CC = chrominance carrier, with respect to sync level.

PC = picture carrier, with respect to sync level.

The sound carrier levels are taking into account

a sound shelf attenuation of 20 dB (SAW filter G1962).

Fig.5 Input signal conditions.

handbook, full pagewidth

VP

VP = 5 V

I14

TDA9809M 14

22 kΩ

22 kΩ

100

nF

VAFC

VAFC I14

(V) (µA)

−200

−100

2.5

0

100

200

38.5

38.9

MHA961

(source current)

(sink current)

39.3 f (MHz)

1998 Jan 08

Fig.6 Measurement conditions and typical AFC characteristic for TV operation.

20

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