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TDA8260TW - Satellite Zero-IF QPSK/8PSK downconverter with PLL synthesizer

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 wide range oscillator (from 950 to 2175 MHz) covers the American, European and Asian satellite bands, as well as the SMA-TV US standard.

Key Features

  • Direct conversion Quadrature Phase Shift Keying (QPSK) and 8-Phase Shift Keying (8PSK) demodulation (Zero-IF).
  • Frequency range: 950 to 2175 MHz.
  • High level asymmetrical RF input.
  • 0 to 50 dB variable gain with AGC control.
  • Loop-controlled 0 to 90° phase shifter.
  • High AGC linearity (.

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INTEGRATED CIRCUITS DATA SHEET TDA8260TW Satellite Zero-IF QPSK/8PSK downconverter with PLL synthesizer Product specification Supersedes data of 2003 Jun 11 2004 Sep 03 Philips Semiconductors Product specification Satellite Zero-IF QPSK/8PSK downconverter with PLL synthesizer FEATURES • Direct conversion Quadrature Phase Shift Keying (QPSK) and 8-Phase Shift Keying (8PSK) demodulation (Zero-IF) • Frequency range: 950 to 2175 MHz • High level asymmetrical RF input • 0 to 50 dB variable gain with AGC control • Loop-controlled 0 to 90° phase shifter • High AGC linearity (<1 dB per bit with an 8-bit DAC), AGC voltage variable between 0 and 3 V • Integrated 5th-order matched baseband filters for in-phase (I) and quadrature (Q) signal paths • Controlled I-to-Q gain balance • I2C-bus controlle