Overview
The Texas Instruments LM4890MX/NOPB is a monaural 1-watt audio power amplifier designed for demanding applications in mobile and portable communication devices. This Class-AB amplifier is part of the BOOMER® series and is known for its ultra-low current shutdown mode, making it suitable for power-sensitive applications. The LM4890MX/NOPB is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) package and is RoHS compliant, ensuring environmental sustainability and regulatory compliance.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LM4890MX/NOPB |
| Package | 8-SOIC (0.154", 3.90mm Width) |
| Output Power | 1 Watt @ 8Ω |
| Supply Voltage | 2.2 V to 5.5 V |
| Operating Temperature | -40°C to 85°C |
| Thermal Shutdown Temperature | 150°C to 190°C |
| ESD Susceptibility | 2000V |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Compliance | Yes |
Key Features
- Ultra Low Current Shutdown Mode: The LM4890MX/NOPB features an ultra-low current shutdown mode, which is beneficial for power-sensitive applications.
- Thermal Protection: The amplifier includes thermal shutdown protection to prevent damage from overheating.
- DEPOP and Shutdown Functions: It includes DEPOP (Differential Input Protection) and shutdown functions for enhanced reliability and control.
- Low Distortion: The amplifier offers low total harmonic distortion plus noise (THD+N), ensuring high-quality audio output.
- Power Supply Rejection Ratio (PSRR): High PSRR ensures minimal impact from power supply noise on the audio output.
Applications
The LM4890MX/NOPB is designed for use in various portable and mobile applications, including:
- Mobile phones and other handheld communication devices.
- Portable audio players and speakers.
- Automotive audio systems.
- Other battery-powered audio equipment where low power consumption and high audio quality are essential.
Q & A
- What is the maximum output power of the LM4890MX/NOPB?
The maximum output power is 1 watt into an 8Ω load.
- What is the operating voltage range of the LM4890MX/NOPB?
The operating voltage range is from 2.2 V to 5.5 V.
- What type of package does the LM4890MX/NOPB come in?
The LM4890MX/NOPB is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) package.
- Is the LM4890MX/NOPB RoHS compliant?
Yes, the LM4890MX/NOPB is RoHS compliant.
- What is the thermal shutdown temperature range of the LM4890MX/NOPB?
The thermal shutdown temperature range is from 150°C to 190°C.
- What is the ESD susceptibility of the LM4890MX/NOPB?
The ESD susceptibility is 2000V.
- What is the moisture sensitivity level (MSL) of the LM4890MX/NOPB?
The MSL is 1 (Unlimited).
- What are some key features of the LM4890MX/NOPB?
Key features include ultra-low current shutdown mode, thermal protection, DEPOP, and low distortion.
- In what types of applications is the LM4890MX/NOPB typically used?
It is typically used in portable and mobile applications such as mobile phones, portable audio players, and automotive audio systems.
- How does the LM4890MX/NOPB ensure high audio quality?
The LM4890MX/NOPB ensures high audio quality through its low total harmonic distortion plus noise (THD+N) and high power supply rejection ratio (PSRR).
