Overview
The LM1877MX-9/NOPB is a monolithic dual power amplifier designed and manufactured by Texas Instruments. This component is part of the LM1877 series and is specifically packaged in a 14-pin SOIC (Small Outline Integrated Circuit) package. It is engineered to deliver high-quality audio performance, making it suitable for a variety of audio applications. The LM1877 is capable of delivering 2 watts per channel continuously into an 8Ω load, with a wide supply voltage range of 6V to 24V. This amplifier is known for its low cross-over distortion, high power supply rejection, and internal thermal shutdown, ensuring reliable operation under various conditions.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Supply Voltage | 6 | 24 | V | ||
| Output Power (THD = 10%) | VS = 20V, RL = 8Ω | 2.0 | W/Ch | ||
| Total Harmonic Distortion | PO = 1 W/Channel, f = 1 kHz | 0.055 | % | ||
| Channel Separation | VS = 20V, VO = 4 Vrms | -50 | -70 | dB | |
| Power Supply Rejection Ratio | VS = 20V, VRIPPLE = 1 Vrms | -50 | -65 | dB | |
| Input Offset Voltage | 15 | mV | |||
| Input Bias Current | 50 | nA | |||
| Operating Temperature | 0 | 70 | °C | ||
| Junction Temperature | 150 | °C |
Key Features
- Delivers 2 watts per channel continuously into an 8Ω load.
- Wide supply voltage range: 6V to 24V.
- Low cross-over distortion and high power supply rejection ratio (PSRR) of up to -65 dB.
- High channel separation of up to -70 dB.
- Internal thermal shutdown and AC short circuit protection.
- Low audio band noise and very low cross-over distortion.
- Internally compensated for all gains greater than 10.
- Operates with a low number of external components.
Applications
- Multi-channel audio systems.
- Stereo phonographs.
- Tape recorders and players.
- AM-FM radio receivers.
- Servo amplifiers.
- Intercom systems.
- Automotive audio products.
Q & A
- What is the maximum output power of the LM1877 per channel?
The LM1877 can deliver up to 2 watts per channel continuously into an 8Ω load. - What is the supply voltage range for the LM1877?
The supply voltage range is from 6V to 24V. - What is the typical total harmonic distortion (THD) at 1 W output power?
The typical THD at 1 W output power is 0.055%. - What is the channel separation of the LM1877?
The channel separation is up to -70 dB. - Does the LM1877 have thermal protection?
Yes, the LM1877 has internal thermal shutdown protection. - What is the operating temperature range of the LM1877?
The operating temperature range is from 0°C to 70°C. - What type of package does the LM1877MX-9/NOPB come in?
The LM1877MX-9/NOPB comes in a 14-pin SOIC package. - Is the LM1877 suitable for automotive applications?
Yes, the LM1877 is suitable for automotive audio products. - What is the power supply rejection ratio (PSRR) of the LM1877?
The PSRR is up to -65 dB. - Does the LM1877 have AC short circuit protection?
Yes, the LM1877 has AC short circuit protection.
