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LM4890MM
+BOMAudio Amplifiers
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ManufacturerTexas Instruments
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Mfr. Part #LM4890MM
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In Stock13133
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Specifications
| Attribute | Value |
| Packaging | Tube |
| StandardPackQty | 1000 |
Overview
Description
The LM4890MM can deliver output power up to 1.1W per channel into an 8-ohm load with less than 1% total harmonic distortion (THD) when powered by a 5V supply. It features a bridge-tied load (BTL) configuration, which eliminates the need for output coupling capacitors or bootstrap capacitors, simplifying the design and reducing component count.
Key features of the LM4890MM include thermal shutdown protection, short circuit protection, and an externally controlled shutdown mode for power-saving. The device is packaged in a surface-mount mini small-outline package (MSOP), which is ideal for space-constrained applications. Overall, the LM4890MM offers a compact, efficient solution for delivering quality audio amplification in portable devices.
Equivalent
1. TPA6211A1 from Texas Instruments
2. MAX9710 from Maxim Integrated
3. NJM2073 from New Japan Radio
4. PAM8302A from Diodes Incorporated
These alternatives provide similar functionalities, such as low power consumption and efficient audio amplification for portable devices. Always check the datasheets to confirm compatibility with your specific application requirements.
Features
1. Output Power: Capable of delivering 1W of continuous average power to an 8Ω load.
2. Low Distortion: Designed to minimize distortion and noise for clear audio output.
3. Low Voltage Operation: Operates efficiently at low voltages, making it suitable for battery-powered devices.
4. Shutdown Function: Includes a shutdown mode to save power when the amplifier is not in use.
5. No Output Coupling Capacitors/Bootstrap Capacitors: Simplifies design and reduces external components.
6. Unity-Gain Stability: Ensures stable operation across a wide range of conditions.
7. Thermal Shutdown Protection: Prevents damage by shutting down the amplifier in case of overheating.
8. Small Package: Available in a compact package, making it ideal for space-constrained applications.
These features make the LM4890MM well-suited for enhancing audio output in portable electronics like mobile phones and MP3 players.
Pinout
1. Shutdown (SD): Activates the chip's shutdown mode to conserve power.
2. Bypass (BYPASS): Bypass capacitor connection to reduce noise.
3. Negative Supply Voltage (VSS): Connects to the ground.
4. Input (IN): Audio input pin for the amplifier.
5. Feedback (FB): Provides feedback from the output to maintain correct operation.
6. Output (OUT): Audio output pin.
7. Positive Supply Voltage (VDD): Connects to the positive supply voltage.
8. No Connect (NC): Typically not connected or used for additional stability or functionality enhancements.
These pins allow the LM4890MM to provide low-distortion audio amplification in a compact package suitable for portable audio devices.
Manufacturer
Application
1. Mobile Phones: Enhances audio output for better sound quality.
2. MP3 Players: Provides efficient audio amplification for playback.
3. Portable Media Devices: Used in tablets and handheld gaming devices.
4. Personal Computers: Integrated into laptops for improved audio performance.
5. Digital Voice Recorders: Amplifies recorded audio for clearer playback.
6. Bluetooth Speakers: Key component for driving speaker outputs.
7. Hearing Aids: Enhances sound clarity and amplification.
Its low-voltage operation and high efficiency make it ideal for battery-powered applications.