TDA8745 - NXP

TDA8745 Satellite sound receiver with I2C-bus control

plastic shrink dual in-line package; 42 leads (600 mil) plastic quad flat package; 44 leads (lead length 1.3 mm); body 10 × 10 × 1.75 mm APPLICATIONS • Satellite receivers • TV sets • Video recorders. GENERAL DESCRIPTION TDA8745 The TDA8745 is the successor of the TDA8740 and TDA8741. The device contains the functionality of the TDA8740 and TDA8741 together.

Features

• On-chip frequency synthesizer and mixer:
  – tuning range 4 to 9.77 MHz
  – reference oscillator 4 MHz (using a crystal or 4 MHz frequency source)
• IF input switches allowing selection of various IF bandwidths (wide or narrow)
• Demodulation of two audio signals by wide band Phase-Locked Loops (PLLs)
• Audio level control after PLL (modulation depth setting)
• Noise Reduction (NR) bypass for use with main audio signals
• Left, right and mono output [1⁄2(l + r)] on SCART level
• External audio inputs (for decoder connection)
• Selectable de-emphasis (DEEM) 50 µs, 75 µs, J17 and flat response
• I.