Overview
The LM1875T is a monolithic power amplifier designed by Texas Instruments, offering very low distortion and high-quality performance for consumer audio applications. This amplifier is capable of delivering up to 20 watts into a 4Ω or 8Ω load on ±25V supplies, and over 30 watts with ±30V supplies. It is designed to operate with a minimum of external components and features advanced circuit techniques and processing to achieve extremely low distortion levels even at high output power levels.
Key Specifications
| Specification | Value |
|---|---|
| Output Power | Up to 30W (20W into 4Ω or 8Ω load on ±25V supplies) |
| Supply Voltage Range | 16V to 60V |
| Load Impedance | 4Ω to 8Ω |
| Distortion (THD + N) | 0.015% @ 20W, 8Ω, VCC=25V |
| Bandwidth | 70 kHz |
| Slew Rate | 8 V/μs |
| Input Offset Voltage Max | 15 mV |
| Operating Temperature Range | 0°C to +70°C |
| Package / Case | TO-220-5 |
| Number of Pins | 5 |
| Mounting Type | Through Hole |
Key Features
- 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 to 60V
- Internal output protection diodes
- High gain and fast slew rate
- Large output voltage swing
- Internally compensated and stable for gains of 10 or greater
Applications
- High-performance audio systems
- Bridge amplifiers
- Stereo phonographs
- Servo amplifiers
- Instrument systems
Q & A
- What is the maximum output power of the LM1875T?
The LM1875T can deliver up to 30 watts of power using an 8Ω load and ±30V supplies.
- What is the typical distortion level of the LM1875T?
The LM1875T has a low distortion level of 0.015% at 1 kHz, 20 W.
- What is the bandwidth of the LM1875T?
The bandwidth of the LM1875T is 70 kHz.
- What kind of protection does the LM1875T offer?
The LM1875T offers protection for AC and DC short circuits to ground, thermal protection with parole circuit, and internal output protection diodes.
- What is the supply voltage range for the LM1875T?
The supply voltage range for the LM1875T is 16V to 60V.
- What is the operating temperature range for the LM1875T?
The operating temperature range for the LM1875T is 0°C to +70°C.
- What type of package does the LM1875T come in?
The LM1875T comes in a TO-220-5 package.
- How many pins does the LM1875T have?
The LM1875T has 5 pins.
- What are some typical applications for the LM1875T?
Typical applications include high-performance audio systems, bridge amplifiers, stereo phonographs, servo amplifiers, and instrument systems.
- Does the LM1875T require external components for operation?
The LM1875T is designed to operate with a minimum of external components.
