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TDA8745H Datasheet(PDF) 2 Page - NXP Semiconductors |
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TDA8745H Datasheet(HTML) 2 Page - NXP Semiconductors |
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2 / 40 page  1996 Mar 11 2 Philips Semiconductors Preliminary specification Satellite sound receiver with I2C-bus control TDA8745 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 • I2C-bus control of all functions • Two selectable addresses • Carrier presence detector with automatic mute option. APPLICATIONS • Satellite receivers • TV sets • Video recorders. GENERAL DESCRIPTION The TDA8745 is the successor of the TDA8740 and TDA8741. The device contains the functionality of the TDA8740 and TDA8741 together with a synthesizer, mixer and I2C-bus control. The pin numbers mentioned in this publication refer to the SDIP42 package; unless otherwise indicated. ORDERING INFORMATION TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TDA8745 SDIP42 plastic shrink dual in-line package; 42 leads (600 mil) SOT270-1 TDA8745H QFP44 plastic quad flat package; 44 leads (lead length 1.3 mm); body 10 × 10 × 1.75 mm SOT307-2 |
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