2000 Nov 10

2

Philips Semiconductors

Product specification

Satellite ZERO-IF QPSK down-converter

TDA8060ATS

FEATURES

• Direct conversion Quadrature Phase Shift Keying

(QPSK) demodulation (Zero IF)

• 920 to 2200 MHz range

• On-chip loop-controlled 0 or 90° phase shifter

• Variable gain on RF input

• 60 MHz, at −3 dB, bandwidth for baseband

I and Q amplifiers

• Local oscillator output to PLL satellite or terrestrial

• 5 V supply voltage.

APPLICATIONS

• Direct Broadcasting Satellite (DBS) QPSK

demodulation

• Digital Video Broadcasting (DVB) QPSK demodulation.

GENERAL DESCRIPTION

The direct conversion QPSK demodulator is the front-end

receiver dedicated to digital TV broadcasting, satisfying

both DVB and DBS TV standards.

The 920 to 2200 MHz wide range oscillator covers

American, European and Asian satellite bands as well as

the SMA-TV US standard.

Accurate QPSK demodulation is ensured by the on-chip

loop-controlled phase shifter. The Zero-IF concept

discards traditional IF filtering and intermediate conversion

techniques. It also simplifies the signal path.

The baseband I and Q signal bandwidth only depends, to

a certain extent, on the external filter used in the

application.

Optimum signal level is guaranteed by a gain-controlled

amplifier at the RF input. The pin AGC sets the gain for

both I and Q channels, providing a 37 dB range.

The chip also offers a selectable internal LO prescaler

(divide-by-2) and buffer that has been designed to be

compatible with the input of a terrestrial or satellite

frequency synthesizer.

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL

PARAMETER

MIN.

TYP.

MAX.

UNIT

supply voltage

4.75

5.00

5.25

V

∆Φ

quadrature error

−−

3

deg

oscillator frequency

920

−

2200

MHz

output voltage (peak-to-peak value)

−

1

−

V

ambient temperature

−20

−

+85

°C

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA8060ATS

SSOP24

plastic shrink small outline package; 24 leads; body width 5.3 mm

SOT340-1