TDA18285HN/C1K

Product Overview

Category

TDA18285HN/C1K belongs to the category of integrated circuits (ICs) specifically designed for television applications.

Use

This product is primarily used in television receivers and set-top boxes to receive and process digital TV signals.

Characteristics

• High sensitivity: The TDA18285HN/C1K offers excellent reception capabilities, ensuring clear and high-quality TV signal reception.
• Low power consumption: This IC is designed to operate efficiently with minimal power consumption, making it suitable for energy-efficient devices.
• Compact package: The TDA18285HN/C1K comes in a small form factor package, allowing for easy integration into various electronic devices.
• Wide frequency range: It supports a wide frequency range, enabling reception of different TV broadcast standards.

Package and Quantity

The TDA18285HN/C1K is typically packaged in a surface mount package, such as a QFN (Quad Flat No-leads) package. It is supplied in reels or trays, with a standard quantity of 2500 units per reel.

Specifications

• Frequency range: 42 MHz to 1002 MHz
• Supply voltage: 3.3 V
• Current consumption: 50 mA (typical)
• RF input impedance: 75 ohms
• Output format: I2C bus interface

Pin Configuration

The TDA18285HN/C1K features a total of 24 pins, each serving a specific function. The pin configuration is as follows:

Pin Number | Pin Name | Function -----------|----------|--------- 1 | VCC | Power supply voltage 2 | GND | Ground 3 | AGC | Automatic Gain Control output 4 | IF_OUT | Intermediate Frequency output 5 | SCL | I2C bus serial clock input 6 | SDA | I2C bus serial data input/output 7-24 | NC | No Connection

Functional Features

The TDA18285HN/C1K offers the following functional features:

1. Automatic Gain Control (AGC): The AGC feature ensures optimal signal strength by automatically adjusting the gain based on the received signal level.
2. Intermediate Frequency (IF) output: This output provides the demodulated and filtered TV signal for further processing.
3. I2C bus interface: The IC utilizes the I2C bus protocol to communicate with the microcontroller or other control devices, allowing for easy integration and control.

Advantages and Disadvantages

Advantages

• High sensitivity ensures excellent reception quality.
• Low power consumption makes it suitable for energy-efficient devices.
• Compact package allows for easy integration into various electronic devices.
• Wide frequency range supports different TV broadcast standards.

Disadvantages

• Limited pin configuration options may restrict certain design requirements.
• Requires external components for complete functionality.

Working Principles

The TDA18285HN/C1K operates based on the superheterodyne principle. It receives the RF signal from the antenna and performs amplification, filtering, and frequency conversion to generate the intermediate frequency (IF) signal. The AGC circuitry adjusts the gain to maintain a consistent signal level, ensuring optimal reception quality.

Application Field Plans

The TDA18285HN/C1K is widely used in various television applications, including: - Digital TV receivers - Set-top boxes - Television tuner modules

Alternative Models

For those seeking alternative options, the following models can be considered: - TDA18272HN/C1K - TDA18250HN/C1K - TDA18218HN/C1K

These models offer similar functionalities and characteristics, providing flexibility in design choices.

In conclusion, the TDA18285HN/C1K is a highly capable integrated circuit designed for television applications. Its high sensitivity, low power consumption, and compact package make it an ideal choice for digital TV receivers and set-top boxes. With its wide frequency range and functional features like AGC and IF output, it ensures excellent reception quality. While it has some limitations, such as limited pin configuration options, it remains a reliable and popular choice in the industry.