Key facts
- Brand
- UTC
- Model
- LM1875
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-04-05
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Unisonic LM1875 Linear Integrated Circuit Datasheet
The LM1875 is a monolithic audio power amplifier IC offering low distortion and high‑quality performance for consumer audio applications. It delivers up to 20 W into a 4 Ω or 8 Ω load on ±25 V supplies and can reach 30 W with an 8 Ω load on +30 V supplies, while requiring minimal external components.
The datasheet lists key features such as a 90 dB gain, 0.015 % THD at 1 kHz (20 W), wide supply range (16 V‑60 V), internal current‑limit and thermal‑shutdown protection, and high current capability (4 A). It also includes absolute maximum ratings, electrical characteristics, typical application circuits, and ordering information.
UTC LM1875 specifications
| Maximum Output Power | Up to 30 W |
|---|---|
| Total Harmonic Distortion (THD) | 0.015 % at 1 kHz, 20 W |
| Open‑Loop Gain | 90 dB |
| Supply Voltage Range | 16 V – 60 V |
| Maximum Output Current | 4 A |
| Ripple Rejection | 94 dB |
| Power Bandwidth | 70 kHz |
| Maximum Supply Voltage (Absolute Rating) | 60 V |
All UTC LM1875 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum output power of the LM1875?
The LM1875 can deliver up to 30 W when used with an 8 Ω load and +30 V supplies.
What is the total harmonic distortion at 20 W output?
The device achieves a THD of 0.015 % at 1 kHz with a 20 W output.
What is the maximum output power of the LM1875?
The LM1875 can deliver up to 30 W into a 4 Ω or 8 Ω load.
What is the typical total harmonic distortion at 20 W output?
The THD is 0.015 % at 1 kHz when delivering 20 W.