Overview
The LM1875T/NOPB is a monolithic power amplifier designed by Texas Instruments, offering very low distortion and high-quality performance for consumer audio applications. This amplifier leverages advanced circuit techniques and processing to achieve extremely low distortion levels even at high output power levels. It is capable of delivering up to 30 watts of power into an 8Ω load with ±30V supplies, and it operates with a minimum of external components. The LM1875T/NOPB features internal current limit and thermal shutdown for device overload protection, ensuring reliable operation in various audio systems.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Maximum Output Power | 30 | Watts |
| Typical Audio Voltage Gain (AVO) | 90 | dB |
| Distortion at 1 kHz, 20 W | 0.015% | |
| Power Bandwidth | 70 kHz | |
| Supply Voltage Range | 16V - 60V | |
| Current Capability | 4A | |
| Ripple Rejection | 94 dB | |
| Package Type | TO-220-5 Formed Leads | |
| Operating Temperature Range | 0°C to 70°C | |
| Mounting Type | Through Hole |
Key Features
- Up to 30 watts output power
- Typical audio voltage gain (AVO) of 90 dB
- 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
- 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/NOPB?
The LM1875T/NOPB can deliver up to 30 watts of power into an 8Ω load with ±30V supplies.
- What is the typical distortion level of the LM1875T/NOPB at 1 kHz and 20 W?
The typical distortion level is 0.015% at 1 kHz and 20 W.
- What is the power bandwidth of the LM1875T/NOPB?
The power bandwidth is 70 kHz.
- What kind of protection does the LM1875T/NOPB have?
The LM1875T/NOPB has protection for AC and DC short circuits to ground and thermal protection with a parole circuit.
- What is the current capability of the LM1875T/NOPB?
The LM1875T/NOPB has a high current capability of 4A.
- What is the supply voltage range for the LM1875T/NOPB?
The supply voltage range is 16V to 60V.
- What type of package does the LM1875T/NOPB come in?
The LM1875T/NOPB comes in a TO-220-5 Formed Leads package.
- What is the operating temperature range for the LM1875T/NOPB?
The operating temperature range is 0°C to 70°C.
- How should I protect the LM1875T/NOPB from highly capacitive loads?
If highly capacitive loads are expected, a resistor (at least 1Ω) should be placed in series with the output of the LM1875.
- What are some common applications of the LM1875T/NOPB?
The LM1875T/NOPB is commonly used in high-performance audio systems, bridge amplifiers, stereo phonographs, servo amplifiers, and instrument systems.
