TDA9808中文资料Single standard VIF-PLL with QSS-IF and FM-PLL demodulator数据手册恩XP规格书

描述 Description

GENERAL DESCRIPTION
The TDA9808 is an integrated circuit for single standard (negative modulated) vision IF signal processing and FM demodulation, with single reference QSS-IF in TV and VTR sets.FEATURES
• 5 V supply voltage (9 V supply voltage for TDA9808(DIP20) only)
• Applicable for IFs (Intermediate Frequencies) of 38.9 MHz, 45.75 MHz and 58.75 MHz
• Gain controlled wide band Video IF (VIF)-amplifier (AC-coupled)
• True synchronous demodulation with active carrier regeneration (very linear demodulation, good
intermodulation figures, reduced harmonics, excellent pulse response)
• Robustness for over-modulation better than 105% due to Phase Locked Loop (PLL)-bandwidth control at negative modulated standards
• VIF Automatic Gain Control (AGC) detector for gain control, operating as peak sync detector
• Tuner AGC with adjustable TakeOver Point (TOP)
• Automatic Frequency Control (AFC) detector without extra reference circuit
• AC-coupled limiter amplifier for sound intercarrier signal
• Alignment-free FM-PLL demodulator with high linearity
• Sound IF (SIF) input for single reference Quasi Split Sound (QSS) mode (PLL controlled); SIF AGC detector for gain controlled SIF amplifier; single reference QSS mixer for high performance
• Electrostatic Discharge (ESD) protection for all pins.

特性 Features

• 5 V supply voltage (9 V supply voltage for TDA9808(DIP20) only)
• Applicable for IFs (Intermediate Frequencies) of 38.9 MHz, 45.75 MHz and 58.75 MHz
• Gain controlled wide band Video IF (VIF)-amplifier (AC-coupled)
• True synchronous demodulation with active carrier regeneration (very linear demodulation, good
intermodulation figures, reduced harmonics, excellent pulse response)
• Robustness for over-modulation better than 105% due to Phase Locked Loop (PLL)-bandwidth control at negative modulated standards
• VIF Automatic Gain Control (AGC) detector for gain control, operating as peak sync detector
• Tuner AGC with adjustable TakeOver Point (TOP)
• Automatic Frequency Control (AFC) detector without extra reference circuit
• AC-coupled limiter amplifier for sound intercarrier signal
• Alignment-free FM-PLL demodulator with high linearity
• Sound IF (SIF) input for single reference Quasi Split Sound (QSS) mode (PLL controlled); SIF AGC detector for gain controlled SIF amplifier; single reference QSS mixer for high performance
• Electrostatic Discharge (ESD) protection for all pins.