| Audio input type | Analog Input |
| Architecture | Class-AB |
| Speaker channels (Max) | Stereo |
| Power stage supply (Max) (V) | 5.5 |
| Power stage supply (Min) (V) | 2.7 |
| Load (Min) (ohms) | 3 |
| Output power (W) | 2.5 |
| SNR (dB) | 93 |
| THD + N @ 1 kHz (%) | 0.3 |
| Iq (Typ) (mA) | 15 |
| Control interface | Hardware |
| Closed/open loop | Open |
| Analog supply (Min) (V) | 2.7 |
| Analog supply (Max) (V) | 5.5 |
| PSRR (dB) | 74 |
| Operating temperature range (C) | -40 to 85 |
- DC Volume Control Interface
- System Beep Detect
- Stereo Switchable Bridged/Single-Ended Power Amplifiers
- Selectable Internal/External Gain and Bass Boost
- “Click and Pop” Suppression Circuitry
- Thermal Shutdown Protection Circuitry
All trademarks are the property of their respective owners. Boomer is a trademark of Texas Instruments.
The LM4838 is a monolithic integrated circuit that provides DC volume control, and stereo bridged audio power amplifiers capable of producing 2W into 4? with less than 1.0% THD or 2.2W into 3? with less than 1.0% THD (see Notes below).
Boomer audio integrated circuits were designed specifically to provide high quality audio while requiring a minimum amount of external components. The LM4838 incorporates a DC volume control, stereo bridged audio power amplifiers and a selectable gain or bass boost, making it optimally suited for multimedia monitors, portable radios, desktop, and portable computer applications.
The LM4838 features an externally controlled, low-power consumption shutdown mode, and both a power amplifier and headphone mute for maximum system flexibility and performance.
Note: When properly mounted to the circuit board, the LM4838NJB, LM4838PWP, and LM4838NYC will deliver 2W into 4?. The LM4838PW and LM4838YZR will deliver 1.1W into 8?. See section for more information.
Note: An LM4838NJB and LM4838PWP that have been properly mounted to the circuit board and forced-air cooled will deliver 2.2W into 3?.