Overview
The LM4808MM/NOPB is a dual audio power amplifier designed by Texas Instruments, specifically tailored for battery-powered applications. This compact amplifier is ideal for portable media players, headphones, and other small audio devices. It boasts impressive audio amplification capabilities, delivering up to 1.1W of continuous output power into an 8Ω load with minimal distortion. The LM4808MM/NOPB is known for its low power consumption, making it suitable for battery-powered devices, and it ensures high-quality sound performance with low distortion.
Key Specifications
| Parameter | Conditions | Typical Value | Limit | Units |
|---|---|---|---|---|
| Supply Voltage | VDD | 2.0 - 5.5 | 2.0 - 5.5 | V |
| Supply Current | VIN = 0V, IO = 0A | 1.2 | 3.0 | mA |
| Output Power at 0.1% THD+N | RL = 16Ω, f = 1 kHz | 105 | - | mW |
| Output Power at 0.1% THD+N | RL = 32Ω, f = 1 kHz | 70 | - | mW |
| Total Power Dissipation | VIN = 0V, IO = 0A | - | 16.5 | mW |
| Input Offset Voltage | VIN = 0V | 10 | 50 | mV |
| Max Output Current | THD+N < 0.1% | 70 | - | mA |
| Operating Temperature Range | - | -40 to 85 | -40 to 85 | °C |
| Package Type | - | VSSOP, MSOP | - | - |
Key Features
- Compact Surface-Mount Packaging: Available in WSON, VSSOP, and SOIC packages for compact integration.
- Click Suppression: Switch on/off click suppression enhances audio quality.
- Power Supply Ripple Rejection: Excellent ripple rejection ensures stable performance.
- Unity-Gain Stability: Ensures consistent output even with variations in input.
- Minimal External Components: Requires fewer external components, simplifying the design.
Applications
The LM4808MM/NOPB is designed for battery-powered audio applications, including:
- Portable media players
- Headphones
- Personal audio devices
- Portable electronic devices
- Personal computers
Q & A
- What is the LM4808MM/NOPB used for?
The LM4808MM/NOPB is a dual audio power amplifier used for battery-powered audio applications such as portable media players, headphones, and personal audio devices.
- What are the key features of the LM4808MM/NOPB?
Key features include compact surface-mount packaging, click suppression, excellent power supply ripple rejection, unity-gain stability, and minimal external components required.
- What is the maximum output power of the LM4808MM/NOPB?
The LM4808MM/NOPB can deliver up to 105 mW of continuous average output power into a 16Ω load and 70 mW into a 32Ω load at 0.1% THD+N.
- What is the operating temperature range of the LM4808MM/NOPB?
The operating temperature range is -40°C to 85°C.
- What types of packages are available for the LM4808MM/NOPB?
The LM4808MM/NOPB is available in VSSOP and MSOP packages.
- How does the LM4808MM/NOPB manage power supply ripple?
The LM4808MM/NOPB features excellent power supply ripple rejection, ensuring stable performance.
- What is the significance of unity-gain stability in the LM4808MM/NOPB?
Unity-gain stability ensures consistent output even with variations in input, making the amplifier more reliable and stable.
- Why is the LM4808MM/NOPB suitable for portable devices?
The LM4808MM/NOPB is suitable for portable devices due to its low power consumption, compact size, and minimal external component requirements.
- What is the typical supply voltage for the LM4808MM/NOPB?
The typical supply voltage range is 2.0V to 5.5V.
- How does the click suppression feature work in the LM4808MM/NOPB?
The click suppression feature reduces audible clicks during power-on and power-off, enhancing audio quality.
