Overview
The LM4780TA/NOPB, produced by Texas Instruments, is a high-performance audio power amplifier designed for a variety of audio applications. This amplifier is part of the Overture™ Audio Power Amplifier Series and is known for its robust features and high-quality audio output. It can operate in both stereo and mono configurations, making it versatile for different system requirements.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Output Power/Channel (Stereo) | 60 W (Typ) | Into 8Ω, THD+N = 0.5%, f = 1 kHz |
| Output Power (Mono) | 120 W (Typ) | Bridged configuration, THD+N = 0.5%, f = 1 kHz |
| THD+N | 0.03% (Typ) | At 2 x 30W into 8Ω, 20Hz - 20kHz |
| Supply Voltage Range | 20V - 84V | No signal |
| Signal-to-Noise Ratio | ≥97 dB (ref. to PO = 1W) | |
| Package/Case | TO-220 | |
| Operating Temperature Range | −20°C to +85°C |
Key Features
- SPiKe Protection: The LM4780 features Texas Instruments' Self Peak Instantaneous Temperature (SPiKe) protection circuitry, which safeguards the amplifier against over-voltage, under-voltage, overloads, shorts to the supplies or GND, thermal runaway, and instantaneous temperature peaks.
- Low External Component Count: The amplifier requires a minimal number of external components, simplifying the design and reducing the overall cost.
- Quiet Fade-In/Out Mute Mode: The LM4780 includes a smooth transition fade-in/out mute feature, enhancing user experience.
- Wide Supply Range: The amplifier can operate with a supply voltage range of 20V to 84V, providing flexibility in different power supply configurations.
- High Signal-to-Noise Ratio: With a signal-to-noise ratio of ≥97 dB (ref. to PO = 1W), the LM4780 ensures high-quality audio output.
Applications
- Audio Amplifier for Component Stereo Systems: Ideal for high-end home audio systems.
- Audio Amplifier for Compact Stereo Systems: Suitable for smaller, compact audio setups.
- Audio Amplifier for Self-Powered Speakers: Can be used in active speaker designs.
- Audio Amplifier for High-End and HD TVs: Enhances audio quality in television systems.
Q & A
- What is the typical output power per channel of the LM4780TA/NOPB in stereo configuration?
The typical output power per channel is 60 W into an 8Ω load with 0.5% THD+N at 1 kHz. - What is the maximum output power in mono configuration?
The maximum output power in mono (bridged) configuration is 120 W. - What is the THD+N of the LM4780TA/NOPB at 2 x 30W into 8Ω?
The THD+N is typically 0.03% at 2 x 30W into 8Ω from 20Hz to 20kHz. - What is the supply voltage range of the LM4780TA/NOPB?
The supply voltage range is from 20V to 84V. - What kind of protection does the LM4780TA/NOPB have?
The LM4780TA/NOPB features SPiKe protection, which includes over-voltage, under-voltage, overload, short-circuit, thermal runaway, and instantaneous temperature peak protection. - What is the signal-to-noise ratio of the LM4780TA/NOPB?
The signal-to-noise ratio is ≥97 dB (ref. to PO = 1W). - What is the operating temperature range of the LM4780TA/NOPB?
The operating temperature range is from −20°C to +85°C. - Can the LM4780TA/NOPB be configured for bridge or parallel operation?
Yes, the LM4780TA/NOPB can easily be configured for bridge or parallel operation for different power output requirements. - What is the package type of the LM4780TA/NOPB?
The package type is TO-220. - Does the LM4780TA/NOPB have a mute feature?
Yes, it includes a quiet fade-in/out mute mode.
