SI2157-A30-GMR

Product Overview

Category

The SI2157-A30-GMR belongs to the category of integrated circuits (ICs).

Use

This product is primarily used in television and set-top box applications.

Characteristics

• The SI2157-A30-GMR is a highly integrated TV tuner IC.
• It supports worldwide terrestrial and cable TV standards.
• This IC offers excellent sensitivity and selectivity for optimal reception quality.
• It features low power consumption, making it suitable for portable devices.
• The SI2157-A30-GMR is designed to provide reliable performance in various operating conditions.

Package

The SI2157-A30-GMR is available in a compact 24-pin QFN package.

Essence

The essence of this product lies in its ability to receive and process TV signals efficiently, ensuring high-quality audio and video output.

Packaging/Quantity

The SI2157-A30-GMR is typically sold in reels containing 2500 units per reel.

Specifications

• Frequency Range: 48MHz - 1002MHz
• Supported TV Standards: DVB-T/T2, ISDB-T, ATSC, DTMB, QAM, NTSC, PAL
• Supply Voltage: 3.3V
• Power Consumption: < 500mW
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

1. VDDA
2. XTALI
3. XTALO
4. GND
5. AGC_OUT
6. IF_OUT
7. RF_IN
8. GND
9. GPO1
10. GPO2
11. GPO3
12. GPO4
13. GPO5
14. GPO6
15. GPO7
16. GPO8
17. GPO9
18. GPO10
19. GPO11
20. GPO12
21. GPO13
22. GPO14
23. GPO15
24. VDD

Functional Features

• High sensitivity and selectivity for optimal reception quality.
• Automatic gain control (AGC) to maintain signal strength.
• Integrated channel filters for improved signal processing.
• Low power consumption for energy-efficient operation.
• Support for multiple TV standards, ensuring compatibility.

Advantages and Disadvantages

Advantages

• Excellent reception performance in various operating conditions.
• Compact size and low power consumption make it suitable for portable devices.
• Wide frequency range and support for multiple TV standards offer versatility.

Disadvantages

• Limited availability of alternative models with similar specifications.
• May require additional external components for complete system integration.

Working Principles

The SI2157-A30-GMR operates by receiving RF signals through the RFIN pin. It then processes these signals using integrated channel filters and demodulation techniques specific to each supported TV standard. The IC's automatic gain control (AGC) ensures optimal signal strength, while the IFOUT pin provides the demodulated baseband signal for further processing.

Detailed Application Field Plans

The SI2157-A30-GMR is widely used in television and set-top box applications. Its high sensitivity and selectivity make it suitable for both terrestrial and cable TV reception. Additionally, its compact size and low power consumption make it ideal for portable devices such as handheld TVs and portable media players.

Detailed and Complete Alternative Models

While the SI2157-A30-GMR offers excellent performance and features, there are a few alternative models available in the market that can be considered:

1. SI2144-A10-GMR: Similar functionality but with a different pin configuration.
2. MAX3543E: Offers additional features like integrated audio and video decoding.
3. TDA18272: Supports a wider frequency range and additional TV standards.

These alternative models provide options for specific requirements or preferences in terms of pin compatibility, additional features, or extended capabilities.

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