Click to expand full text
INTEGRATED CIRCUITS
DATA SHEET
TDA8261TW Satellite Zero-IF QPSK/8PSK downconverter with PLL synthesizer
Product specification Supersedes data of 2004 Oct 25 2004 Dec 02
Philips Semiconductors
Product specification
Satellite Zero-IF QPSK/8PSK downconverter with PLL synthesizer
FEATURES • Direct conversion Quadrature Phase Shift Keying (QPSK) and 8PSK demodulation (Zero-IF) • 950 to 2175 MHz frequency range • High-level asymmetrical RF input • 0 to 50 dB variable gain on RF input • Loop-controlled 0° to 90° phase shifter • High AGC linearity (<1 dB per bit with an 8-bit DAC), AGC between 0 and 3 V • External baseband filters for In-phase (I) and Quadrature (Q) signal paths • I2C-bus controlled PLL frequency synthesizer • Low phase noise • Operation from a 4 MHz crystal (allowing the use o
TDA8261TW Datasheet
