TDA9874APS/V2 データシートの表示（PDF） - Philips Electronics

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TDA9874APS/V2

Digital TB sound demodulator/processor

Philips Electronics 

Philips Semiconductors

Digital TV sound demodulator/decoder

Preliminary specification

TDA9874A

2.1.3 SATELLITE SYSTEMS

An important specification for satellite TV reception is the Astra specification. The TDA9874A is suitable for the reception

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

Table 4 FM satellite sound

CARRIER TYPE

Main

Sub

CARRIER

FREQUENCY

(MHz)

6.50(1)

7.02/7.20

7.38/7.56

7.74/7.92

8.10/8.28

MODULATION

INDEX

0.26

0.15

MAXIMUM

FM DEVIATION

(kHz)

85(2)

50

MODULATION

mono

m/st/d(3)

BANDWIDTH/

DE-EMPHASIS

(kHz/µs)

15/50(1)

15/adaptive(4)

Notes

1. For other satellite systems, frequencies of e.g. 5.80, 6.60 or 6.65 MHz can also be received. A de-emphasis of 60 µs,

or in accordance with J17, is available.

2. Main channels with high deviation can also be handled.

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

4. Adaptive de-emphasis is compatible to transmitter specification.

3 ORDERING INFORMATION

TYPE NUMBER

TDA9874APS

TDA9874AH

NAME

SDIP42

QFP44

PACKAGE

DESCRIPTION

plastic shrink dual in-line package; 42 leads (600 mil)

plastic quad flat package; 44 leads (lead length 2.35 mm);

body 14 × 14 × 2.2 mm

VERSION

SOT270-1

SOT205-1

1999 Dec 03

5

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