1997 May 14

11

Philips Components

Preliminary specification

Desktop video & FM radio module

system CCIR I

FM1246

Note

1. All the pins of the desktop video tuner are protected against electrostatic discharge (ESD) up to 2 kV. The product is

classified in category B

(‘‘MIL-STD-883C”).

FM radio characteristics

α26

limiting sensitivity for (S+N)/N

test signal C1

−

730

dB

µV

α50

test signal C3

−

30

40

dB

µV

S/N ratio:

test signal C1

mono at f = 22.5 kHz

55

58

−

dB

mono at f = 75 kHz

65

68

−

dB

stereo

test signal C3

55

63

−

dB

FM image rejection

test signal C1

53

65

−

dB

test signal C1 + C2

50

−−

dB

frequency response:

test signal C3;

−3 dB points

lower

−3 dB point

−

20

40

Hz

upper

−3 dB point

14

18

−

kHz

AM suppression

test signal C1

38

−−

dB

FM AF output level at

terminal 20/21 (RMS value):

mono

test signal C1

40

57

74

mV

stereo

test signal C3

120

175

230

mV

stereo separation

test signal C3; 1 kHz

28

35

−

dB

THD

total harmonic distortion:

test signal C3

stereo at 1 kHz

−

0.8

1.5

%

during overmodulation at

f=

±100 kHz

−

1.5

3

%

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT