The LM4811 is a dual audio power amplifier capable of delivering 105mW per channel of continuous average power into a 16Ω load with 0.1% (THD+N) from a 5V power supply.
Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4811 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems.
The LM4811 features a digital volume control that sets the amplifier's gain from +12dB to −33dB in 16 discrete steps using a two−wire interface.
The unity-gain stable LM4811 also features an externally controlled, active-high, micropower consumption shutdown mode. It also has an internal thermal shutdown protection mechanism.
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| Output power (W) | 0.105 |
| Analog supply (min) (V) | 2 |
| Analog supply voltage (max) (V) | 5.5 |
| Load (min) (Ω) | 16 |
| PSRR (dB) | 60 |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 85 |
| Headphone channels | Stereo |
| Volume control | Yes |
| Shutdown current (ISD) (µA) | 0.3 |
| Architecture | Class-AB |
| Iq per channel (typ) (mA) | 0.65 |
| VSSOP (DGS) | 10 | 14.7 mm² 3 x 4.9 |
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