CX24123-11,557

Product Overview

Category

The CX24123-11,557 belongs to the category of integrated circuits (ICs).

Use

This product is primarily used in satellite television receivers and set-top boxes.

Characteristics

• High sensitivity: The CX24123-11,557 has a high sensitivity, allowing it to receive weak signals effectively.
• Low power consumption: This IC is designed to consume minimal power, making it energy-efficient.
• Compact package: The CX24123-11,557 comes in a compact package, enabling easy integration into various devices.
• Wide frequency range: It supports a wide frequency range, ensuring compatibility with different satellite systems.

Package

The CX24123-11,557 is typically packaged in a small outline integrated circuit (SOIC) package.

Essence

The essence of the CX24123-11,557 lies in its ability to receive and process satellite signals for television reception.

Packaging/Quantity

This IC is usually sold in reels or trays, with quantities varying depending on customer requirements.

Specifications

• Frequency range: 950 MHz to 2150 MHz
• Input impedance: 75 ohms
• Supply voltage: 3.3 V
• Current consumption: 100 mA (typical)
• Operating temperature range: -40°C to +85°C

Detailed Pin Configuration

The CX24123-11,557 has the following pin configuration:

1. RF_IN: RF input from the satellite dish
2. AGC_OUT: Automatic Gain Control output
3. IF_OUT: Intermediate Frequency output
4. VCC: Power supply voltage
5. GND: Ground connection
6. SDA: Serial Data line for communication
7. SCL: Serial Clock line for communication
8. XTAL: Crystal oscillator input

Functional Features

• Low noise figure: The CX24123-11,557 ensures minimal signal degradation by maintaining a low noise figure.
• Automatic Gain Control (AGC): It incorporates AGC functionality to maintain a consistent output level despite varying input signal strengths.
• Integrated filters: This IC includes integrated filters to reject unwanted signals and enhance the overall reception quality.
• DiSEqC support: The CX24123-11,557 is compatible with the Digital Satellite Equipment Control (DiSEqC) protocol, enabling communication with other satellite devices.

Advantages and Disadvantages

Advantages

• High sensitivity for improved signal reception
• Low power consumption for energy efficiency
• Compact package for easy integration
• Wide frequency range for compatibility with various satellite systems

Disadvantages

• Limited availability of alternative models
• May require additional external components for complete system implementation

Working Principles

The CX24123-11,557 operates based on the principle of converting received satellite signals into intermediate frequency (IF) signals. It amplifies and filters the RF input signal, then downconverts it to an IF signal using a mixer. The AGC circuitry ensures a consistent output level, while integrated filters reject unwanted signals. The resulting IF signal is then available at the IF_OUT pin for further processing.

Detailed Application Field Plans

The CX24123-11,557 finds extensive application in satellite television receivers and set-top boxes. Its high sensitivity and wide frequency range make it suitable for receiving signals from various satellite systems. Additionally, its compact size allows for integration into portable devices such as handheld satellite receivers.

Detailed and Complete Alternative Models

While the CX24123-11,557 is a reliable choice for satellite television reception, there are alternative models available in the market. Some notable alternatives include:

1. CX24130-11,557: A similar IC with enhanced features such as built-in channel decoding capabilities.
2. CX24140-11,557: An advanced version with integrated digital signal processing for improved signal quality.

These alternative models offer different functionalities and may better suit specific application requirements.

In conclusion, the CX24123-11,557 is a highly sensitive and energy-efficient IC designed for satellite television reception. Its compact package, wide frequency range, and integrated features make it an ideal choice for various satellite systems. While alternative models exist, the CX24123-11,557 remains a reliable option for satellite TV applications.