Overview
The LM1875T/LB02 is a monolithic power amplifier designed by Texas Instruments, offering high-quality performance for consumer audio applications. This amplifier is known for its very low distortion and high power output, making it suitable for a variety of audio systems. It can deliver up to 20 watts into a 4Ω or 8Ω load with ±25V supplies, and up to 30 watts with ±30V supplies. The LM1875T/LB02 features advanced circuit techniques and processing to achieve low distortion levels even at high output power.
Key Specifications
| Parameter | Typical Value | Units |
|---|---|---|
| Supply Voltage | 60 | V |
| Input Voltage | -VEE to VCC | V |
| Storage Temperature | -65°C to +150°C | °C |
| Junction Temperature | 150°C | °C |
| Lead Temperature (Soldering, 10 seconds) | 260°C | °C |
| Output Power (THD=1%, RL=8Ω, fo=1 kHz) | 20 W | W |
| Total Harmonic Distortion (POUT=20W, fo=1 kHz) | 0.015% | % |
| Supply Current (POUT=0W) | 70-100 mA | mA |
| Gain-Bandwidth Product (fo=20 kHz) | 5.5 MHz | MHz |
| Open Loop Gain (DC) | 90 dB | dB |
| Power Bandwidth | 70 kHz | kHz |
| Current Capability | 4 A | A |
| Supply Range | 16V-60V | V |
Key Features
- Up to 30 watts output power
- Very low distortion: 0.015% at 1 kHz, 20 W
- Wide power bandwidth: 70 kHz
- Protection for AC and DC short circuits to ground
- Thermal protection with parole circuit
- High current capability: 4A
- Wide supply range: 16V-60V
- Internal output protection diodes
- High gain and fast slew rate
- Large output voltage swing
- 94 dB ripple rejection
- Plastic power package TO-220
Applications
- High performance audio systems
- Bridge amplifiers
- Stereo phonographs
- Servo amplifiers
- Instrument systems
Q & A
- What is the maximum output power of the LM1875T/LB02?
The LM1875T/LB02 can deliver up to 20 watts into a 4Ω or 8Ω load with ±25V supplies, and up to 30 watts with ±30V supplies.
- What is the typical distortion level of the LM1875T/LB02?
The typical distortion level is 0.015% at 1 kHz, 20 W.
- What is the power bandwidth of the LM1875T/LB02?
The power bandwidth is 70 kHz.
- Does the LM1875T/LB02 have thermal protection?
- What is the current capability of the LM1875T/LB02?
The current capability is 4A.
- What is the supply range of the LM1875T/LB02?
The supply range is 16V-60V.
- Does the LM1875T/LB02 have internal output protection diodes?
- What type of package does the LM1875T/LB02 come in?
The LM1875T/LB02 comes in a plastic power package TO-220.
- What are some typical applications of the LM1875T/LB02?
High performance audio systems, bridge amplifiers, stereo phonographs, servo amplifiers, and instrument systems.
- How important is the layout of the printed circuit board for the LM1875T/LB02?
The layout of the printed circuit board is very important to prevent high frequency oscillation or excessive distortion.
