Overview
The TPA4861DRG4 is a Class-AB audio power amplifier manufactured by Texas Instruments, designed for applications requiring high-quality audio output in a compact form factor. This single-channel mono amplifier is housed in an SOIC-8 package, making it suitable for surface-mount technology (SMT) applications. With an output power of 1 W and a gain bandwidth product of 1.5 MHz, it is ideal for portable audio devices, small speakers, and other low-power audio applications. Its wide operating voltage range of 2.7 V to 5.5 V and low power consumption make it a versatile choice for battery-powered devices.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Installation Method | Surface Mount | - | - |
| Pin Count | 8 | - | - |
| Supply Voltage | 2.7 ~ 5.5 | V | - |
| Output Power | 1 | W | @ 8 Ω |
| Gain Bandwidth Product | 1.5 | MHz | - |
| Operating Temperature | -40 ~ 85 | °C | - |
| Power Dissipation | 725 | mW | Max |
| Quiescent Current | 3.5 | mA | - |
| THD + Noise | 0.2 | % | - |
| Package | SOIC-8 | - | - |
Key Features
- Class-AB audio amplifier with 1 W output power for high-quality audio.
- Wide operating voltage range (2.7 V to 5.5 V) suitable for battery-powered devices.
- Low quiescent current of 3.5 mA for energy efficiency.
- Compact SOIC-8 package for space-constrained applications.
- BTL (Bridge-Tied Load) configuration eliminates the need for external coupling capacitors.
Applications
The TPA4861DRG4 is widely used in portable audio devices, such as MP3 players, smartphones, and portable speakers. It is also suitable for small home audio systems, intercoms, and other applications requiring low-power, high-quality audio amplification. Its robust performance and compact design make it an excellent choice for consumer electronics and industrial audio solutions.
Q & A
1. What is the output power of the TPA4861DRG4?
The TPA4861DRG4 provides 1 W of continuous average power into an 8 Ω load.
2. What is the operating voltage range?
The amplifier operates within a voltage range of 2.7 V to 5.5 V.
3. Is this amplifier suitable for battery-powered devices?
Yes, its low quiescent current and wide operating voltage range make it ideal for battery-powered applications.
4. What is the package type of the TPA4861DRG4?
It comes in an SOIC-8 surface-mount package.
5. Does the TPA4861DRG4 require external coupling capacitors?
No, its BTL configuration eliminates the need for external coupling capacitors.
6. What is the gain bandwidth product of this amplifier?
The gain bandwidth product is 1.5 MHz.
7. What is the maximum power dissipation?
The maximum power dissipation is 725 mW.
8. What is the THD + Noise specification?
The THD + Noise is 0.2%.
9. Can the TPA4861DRG4 operate in extreme temperatures?
Yes, it operates within a temperature range of -40 °C to 85 °C.
10. What are typical applications for this amplifier?
Typical applications include portable audio devices, small speakers, and intercom systems.
