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Description
The A4471P2 is an electronic component categorized as an IC chip. Specifically, it is an integrated bipolar circuit used for full multistandard video/sound IF (VIF/SIF) signal processing in different multimedia applications such as TV/VCR. The A4471P2 is versatile in processing TV signals with negative modulation like B/G standard, positive modulation like L standard, and AM, FM/NICAM sound IF signals. It is designed with two video IF inputs (2x VIF) and one sound IF input (1x SIF) that allow configuration of a universal IF module for various applications.
Specifications and features
- 5V supply voltage with low power consumption
- Active carrier generation by FPLL principle (frequency-phase-locked-loop) for true synchronous demodulation
- Very linear video demodulation, good pulse response, and excellent intermodulation figures
- VCO circuit is operating on the picture carrier frequency, and the VCO frequency is switchable for the L’ mode
- Alignment-free AFC without an external reference circuit, polarity of the AFC curve is switchable
- VIF-AGC for negative modulated signals (peak-sync detection) and for positive modulation (peak white/black level detector)
- Tuner AGC with an adjustable take-over point
- Alignment-free quasi-parallel sound (QPS) mixer for FM/NICAM sound IF signals
- Intercarrier output signal is gain-controlled (necessary for digital sound processing)
- Complete alignment-free AM demodulator with gain-controlled AF output
- Separate SIF-AGC with average detection
- Parallel operation of the AM demodulator and QPS mixer (for NICAM-L stereo sound)
- Package and relevant pinning are compatible with the TDA4474, simplifying the design of a universal IF module
Application Scenarios
The A4471P2 is widely used in various multimedia applications such as TV/VCR, where full multistandard video/sound IF (VIF/SIF) signal processing is required. It allows for the processing of different TV signals with negative modulation such as B/G standard, positive modulation such as L standard, and AM, FM/NICAM sound IF signals with ease. Moreover, with two video IF inputs (2x VIF) and one sound IF input (1x SIF), it offers flexibility and convenience in designing a universal IF module for different multimedia applications.
Comparison
Advantages- The A4471P2 has an active carrier generation using the FPLL principle for true synchronous demodulation, which ensures high-quality video and sound processing.
- It has VCO circuitry operating on picture carrier frequency with a switchable VCO frequency.
- The AFC is alignment-free without an external reference circuit, and polarity of the AFC curve is switchable.
- It includes VIF-AGC and SIF-AGC for negative modulated signals (peak-sync detection) and for positive modulation (peak white/black level detector) with an adjustable take-over point.
- The A4471P2 has alignment-free quasi-parallel sound (QPS) mixer for FM/NICAM sound IF signals, which is convenient for multimedia applications.
Disadvantages- The A4471P2 is an electronic component that requires additional programming or configuration to work correctly. It might not be user-friendly for non-engineering individuals.
- It is limited to processing video and sound signals and does not support other types of functions or features.
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Similar parts: 430483 , Click to view
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Datasheet
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- Datasheet: Download A4471P2
- Chipdatas Part: CD86-A4471P2
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
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- Last Updated: 2024/06/12 23:29 +0800
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