TDA18271HD/C2,551

Product Overview

Category

The TDA18271HD/C2,551 belongs to the category of integrated circuits (ICs) specifically designed for television and radio reception applications.

Use

This product is primarily used in digital television receivers and set-top boxes to enable high-quality signal reception and decoding.

Characteristics

• High sensitivity: The TDA18271HD/C2,551 offers excellent sensitivity, allowing it to receive weak signals even in areas with poor reception.
• Wide frequency range: It covers a broad frequency range, making it suitable for various broadcasting standards.
• Low power consumption: This IC is designed to operate efficiently, minimizing power consumption and extending battery life in portable devices.
• Compact package: The TDA18271HD/C2,551 is available in a compact package, ensuring easy integration into space-constrained designs.
• Enhanced noise performance: It features advanced noise reduction techniques, resulting in improved signal quality and reduced interference.

Package and Quantity

The TDA18271HD/C2,551 is typically packaged in a small outline transistor (SOT) package. It is commonly supplied in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Frequency range: 42 MHz to 1002 MHz
• Supply voltage: 3.3 V
• Current consumption: 20 mA (typical)
• Output impedance: 75 ohms
• Operating temperature range: -40°C to +85°C

Detailed Pin Configuration

The TDA18271HD/C2,551 has the following pin configuration:

1. RF_IN: Input pin for the radio frequency (RF) signal.
2. AGC_OUT: Automatic Gain Control (AGC) output pin.
3. IF_OUT: Intermediate Frequency (IF) output pin.
4. SDA: Serial Data Address pin for I2C communication.
5. SCL: Serial Clock pin for I2C communication.
6. VCC: Supply voltage pin.
7. GND: Ground pin.

Functional Features

• Automatic Gain Control (AGC): The TDA18271HD/C2,551 incorporates AGC functionality to maintain a consistent signal level, compensating for variations in input strength.
• Channel filtering: It includes advanced channel filtering techniques to reject unwanted signals and enhance the desired signal quality.
• I2C interface: The IC supports an I2C interface for easy control and configuration by the host device.
• Low noise figure: With a low noise figure, it ensures minimal degradation of the received signal during amplification.

Advantages and Disadvantages

Advantages

• High sensitivity enables reliable reception even in challenging environments.
• Wide frequency range allows compatibility with various broadcasting standards.
• Low power consumption prolongs battery life in portable devices.
• Compact package facilitates integration into space-constrained designs.
• Enhanced noise performance improves signal quality.

Disadvantages

• Limited output impedance options may require additional components for impedance matching in certain applications.
• Lack of built-in digital signal processing (DSP) capabilities may necessitate external processing for advanced features.

Working Principles

The TDA18271HD/C2,551 operates based on the superheterodyne principle. It receives the RF signal through the RF_IN pin, amplifies it, and converts it to an intermediate frequency using internal mixers and filters. The AGC circuitry ensures a consistent signal level, while the I2C interface allows for control and configuration of the IC.

Detailed Application Field Plans

The TDA18271HD/C2,551 finds extensive application in digital television receivers, set-top boxes, and other devices requiring high-quality signal reception. Its wide frequency range and excellent sensitivity make it suitable for various broadcasting standards, including DVB-T, DVB-C, and ISDB-T.

Detailed and Complete Alternative Models

• TDA18272HD/C2,551: Similar to the TDA18271HD/C2,551 but with additional features for enhanced performance.
• TDA18273HD/C2,551: A higher-end version with advanced digital signal processing capabilities.
• TDA18274HD/C2,551: Designed specifically for cable television applications, offering optimized performance in that domain.

Note: The alternative models listed above are provided as examples and may not represent an exhaustive list of available alternatives.

This entry provides a comprehensive overview of the TDA18271HD/C2,551 integrated circuit. Its key features, advantages, and disadvantages have been discussed, along with its working principles and application field plans. Additionally, alternative models have been suggested for further exploration.