Description

The TDA9818TS is an electronic component that belongs to the IC chips product category. It is designed for multi-standard vision IF signal processing and sound AM and FM demodulation. It is widely used in various electronic devices for video and audio signal processing.

Specifications and features

• Supply voltage: 5 V
• Applicable for IFs of 38.9, 45.75 and 58.75 MHz
• Gain controlled wide-band Video IF (VIF) amplifier (AC-coupled)
• True synchronous demodulation with active carrier regeneration
• Robustness for over-modulation better than 105%
• Voltage Controlled Oscillator (VCO) frequency switchable between L and L accent picture carrier frequency
• VIF Automatic Gain Control (AGC) detector for gain control
• Tuner AGC with adjustable Take-Over Point (TOP)
• Automatic Frequency Control (AFC) detector without extra reference circuit
• AC-coupled limiter amplifier for sound intercarrier signal
• Alignment-free FM Phase-Locked Loop (PLL) demodulator with high linearity
• Sound IF (SIF) input for single reference Quasi Split Sound (QSS) mode
• SIF AGC detector for gain controlled SIF amplifier
• AM demodulator without extra reference circuit
• Stabilizer circuit for ripple rejection and to achieve constant output signals
• ElectroStatic Discharge (ESD) protection for all pins

Application Scenarios

The TDA9818TS can be used in various electronic devices such as TVs, monitors, set-top boxes, and other related devices for video and audio signal processing.

Comparison

• Can process multi-standard vision IF signal and sound AM and FM demodulation
• True synchronous demodulation with active carrier regeneration provides linear demodulation, good intermodulation figures, reduced harmonics, and excellent pulse response
• Robustness for over-modulation better than 105%
• Tuner AGC with adjustable Take-Over Point (TOP) and Automatic Frequency Control (AFC) detector without extra reference circuit
• Stabilizer circuit for ripple rejection and to achieve constant output signals

• Requires an external alignment for VCO frequency switchable between L and L accent picture carrier frequency