Texas Instruments LM4915
The LM4915 is a pseudo-differential audio power amplifier primarily designed for demanding applications in mobile phones and other portable audio device applications with mono headphones. It is capable of delivering 90 miliwatts of continuous average power to a 32Ω BTL load with less than 1% distortion (THD+N) from a 3VDC power supply. The LM4915 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.- Min Voltage : 2.7V
- Max Voltage : 5.5V
- Channels : 1
- Max Operating Temp : 85°C
- Min Operating Temp : -40°C
Source:
Octopart
| Part No. | LM4915 |
|---|---|
| Datasheet | LM4915 Download |
| Manufacturer |  Texas Instruments |
| Description | Pseudo-Differential Mono Headphone Amplifier |
| Buy | Stock & Price |
FEATURES
1●2 Pseudo-Differential Amplification
● Internal Gain-Setting Resistors
● Available in Space-Saving WQFN Package
● Ultra Low Current Shutdown Mode
● Can Drive Capacitive Loads up to 500pF
● Improved Pop & Click Circuitry Virtually Eliminates Noises During Turn-On and TurnOff Transitions
● 2.2 - 5.5V Operation
● No Output Coupling Capacitors, Snubber Networks, Bootstrap Capacitors or GainSetting Resistors Required
● Ultra Low Noise KEY SPECIFICATIONS
● Improved PSRR at 217Hz and 1kHz: 75dB (Typ)
● Power Output at 5.0V & 1% THD into 32Ω: 280mW (Typ)
● Power Output at 3.0V & 1% THD into 32Ω: 90mW (Typ)
● Output Noise, A-weighted: 20μV (Typ)
APPLICATIONS
● Mobile Phones● PDAs
● Portable Electronics Devices
DESCRIPTION
Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4915 features a low-power consumption shutdown mode. To facilitate this, Shutdown may be enabled by driving the shutdown pin low.
