TDA9874H datasheet(5/56 Pages) PHILIPS

5 / 56 page

1998 Apr 27

Philips Semiconductors

Preliminary speciﬁcation

Digital TV sound demodulator/decoder

TDA9874H

2.1.3

SATELLITE SYSTEMS

An important specification for satellite TV reception is the Astra specification. The TDA9874H is suited for the reception

of Astra and other satellite signals, with sound carrier frequencies from 4 to 9.2 MHz.

Table 4

FM satellite sound

Notes

1. For other satellite systems, frequencies of e.g. 5.80 MHz, 6.60 MHz or 6.65 MHz can also be received.

A de-emphasis of 60

µs or in accordance with J17 is available.

2. m/st/d = mono or stereo or dual language sound.

3. Adaptive de-emphasis = compatible to transmitter specification.

ORDERING INFORMATION

CARRIER TYPE

CARRIER

FREQUENCY

(MHz)

MODULATION

INDEX

MAXIMUM

FM DEVIATION

(kHz)

MODULATION

BANDWIDTH/

DE-EMPHASIS

(kHz/

µs)

Main

6.50(1)

0.26

mono

15/50(1)

Sub

7.02/7.20

0.15

m/st/d(2)

15/adaptive(3)

Sub

7.38/7.56

0.15

m/st/d(2)

15/adaptive(3)

Sub

7.74/7.92

0.15

m/st/d(2)

15/adaptive(3)

Sub

8.10/8.28

0.15

m/st/d(2)

15/adaptive(3)

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA9874H QFP44 plastic quad ﬂat package; 44 leads (lead length 2.35 mm); body 14

× 14 × 2.2 mm SOT205-1

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