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LM4917SDX
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LM4917SDX

Product Overview

Category

LM4917SDX belongs to the category of audio amplifiers.

Use

It is used for amplifying audio signals in various electronic devices such as smartphones, tablets, and portable media players.

Characteristics

  • High-quality audio amplification
  • Low power consumption
  • Small package size
  • Integrated volume control

Package

The LM4917SDX comes in a small outline integrated circuit (SOIC) package.

Essence

The essence of LM4917SDX lies in its ability to provide high-fidelity audio amplification in a compact form factor.

Packaging/Quantity

The LM4917SDX is typically packaged in reels containing a specific quantity, usually 250 or 1000 units per reel.

Specifications

  • Power Supply Voltage: 2.7V to 5.5V
  • Output Power: 1.25W at 3.6V, 10% THD+N, 8Ω Load
  • Shutdown Current: 0.01μA (Typical)
  • Signal-to-Noise Ratio (SNR): 95dB (Typical)

Detailed Pin Configuration

The LM4917SDX has a total of 14 pins, each serving a specific function in the amplifier circuit. The detailed pin configuration is as follows: 1. VDD - Power supply voltage input 2. SHDN - Shutdown control input 3. INP - Positive audio signal input 4. INN - Negative audio signal input 5. GND - Ground 6. BYP - Bypass capacitor connection 7. VREF - Reference voltage output 8. VOUTL - Left channel audio output 9. VOUTR - Right channel audio output 10. AGND - Analog ground 11. VOL - Volume control input 12. MODE - Mode selection input 13. BST - Bootstrap capacitor connection 14. VDD - Power supply voltage input

Functional Features

  • Integrated shutdown control for power saving
  • Built-in volume control for easy adjustment
  • High-quality audio amplification with low distortion
  • Flexible mode selection for different applications

Advantages and Disadvantages

Advantages

  • Compact size
  • Low power consumption
  • High-quality audio amplification

Disadvantages

  • Limited output power compared to larger amplifiers
  • May require additional external components for certain applications

Working Principles

The LM4917SDX operates by amplifying the input audio signals using an internal amplifier circuit. It also includes features such as shutdown control and volume adjustment to provide flexibility and power-saving capabilities.

Detailed Application Field Plans

The LM4917SDX is well-suited for various portable and battery-powered electronic devices requiring high-quality audio amplification. Some specific application fields include: - Mobile phones - Tablets - Portable media players - Bluetooth speakers - Wearable devices

Detailed and Complete Alternative Models

Some alternative models to LM4917SDX include: - LM4863: A similar audio amplifier with higher output power - TPA2012: An audio amplifier with integrated digital volume control - MAX98357A: A compact audio amplifier with advanced power management features

This completes the entry for LM4917SDX, providing comprehensive information about its product category, specifications, features, and application fields.

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Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät LM4917SDX :n soveltamiseen teknisissä ratkaisuissa

  1. What is the LM4917SDX?

    • The LM4917SDX is a mono, bridge-tied load (BTL) audio power amplifier designed for use in portable electronic devices.

  2. What is the typical application of the LM4917SDX?

    • The LM4917SDX is commonly used in applications such as smartphones, tablets, portable gaming devices, and other battery-powered audio systems.

  3. What is the maximum output power of the LM4917SDX?

    • The LM4917SDX can deliver up to 1.25W of continuous average power into an 8Ω BTL load with less than 1% total harmonic distortion (THD+N).

  4. What is the supply voltage range for the LM4917SDX?

    • The LM4917SDX operates from a single 2.5V to 5.5V supply, making it suitable for battery-powered applications.

  5. Does the LM4917SDX require external components for operation?

    • Yes, the LM4917SDX requires a few external components such as input coupling capacitors, feedback resistors, and output decoupling capacitors for proper operation.

  6. What is the efficiency of the LM4917SDX?

    • The LM4917SDX offers high efficiency, making it suitable for battery-powered applications where power consumption is critical.

  7. Can the LM4917SDX handle short-circuit conditions?

    • The LM4917SDX has built-in thermal shutdown and short-circuit protection to safeguard the device under fault conditions.

  8. Is the LM4917SDX available in a small package for space-constrained designs?

    • Yes, the LM4917SDX is available in a small 9-bump micro SMD package, making it suitable for compact designs.

  9. What is the recommended layout and grounding scheme for the LM4917SDX?

    • The datasheet provides guidelines for the recommended layout and grounding scheme to optimize performance and minimize noise.

  10. Are there any application notes or reference designs available for the LM4917SDX?

    • Yes, Texas Instruments provides application notes and reference designs to assist engineers in implementing the LM4917SDX in their technical solutions.