LM4931ITL/NOPB
ActiveAUDIO SUBSYSTEM WITH MONO HIGH EFFICIENCY LOUDSPEAKER AND STEREO HEADPHONE AMPLIFIERS
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LM4931ITL/NOPB
ActiveAUDIO SUBSYSTEM WITH MONO HIGH EFFICIENCY LOUDSPEAKER AND STEREO HEADPHONE AMPLIFIERS
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Technical Specifications
Parameters and characteristics for this part
| Specification | LM4931ITL/NOPB |
|---|---|
| Features | DAC, SPI, Standby, Shutdown, Depop, I2C, PCM, I2S, Mute, Microphone, ADC, Volume Control |
| Max Output Power x Channels @ Load | 1.1 W, 26 mW |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Type | 1-Channel (Mono) with Stereo Headphones |
| Package / Case | 42-WFBGA, DSBGA |
| Supplier Device Package | 42-DSBGA |
| Type | Class D |
| Voltage - Supply [Max] | 5 V |
| Voltage - Supply [Min] | 2.7 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 9.74 | |
| Digi-Reel® | 1 | $ 9.74 | ||
| Tape & Reel (TR) | 250 | $ 6.96 | ||
| 500 | $ 6.34 | |||
| 1250 | $ 5.53 | |||
| Texas Instruments | SMALL T&R | 1 | $ 8.56 | |
| 100 | $ 6.98 | |||
| 250 | $ 5.48 | |||
| 1000 | $ 4.65 | |||
Description
General part information
LM4931 Series
The LM4931 is an integrated audio subsystem that supports voice and digital audio functions. The LM4931 includes a high quality stereo DAC, voice band codec, a stereo headphone amplifier and a high-power high efficiency mono speaker amplifier. It is primarily designed for demanding applications in mobile phones and other portable devices.
The LM4931 features an I2S serial interface for full range audio, a 16-bit PCM bi-directional serial interface for the voice band codec and an I2C/SPI compatible interface for control. The full range music path features an SNR of 86dB with an 18-bit 48kHz input. The headphone amplifier delivers at least 26mWRMSto a 32Ω single-ended stereo load with less than 1% distortion (THD+N) when AVDD= 3.3VDC. The mono speaker amplifier delivers up to 570mWRMSinto an 8Ω load with less than 1% distortion when AVDD= 3.3VDC.
The LM4931 employs advanced techniques to reduce power consumption, to reduce controller overhead, and to eliminate click and pop. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. It is therefore ideally suited for mobile phone and other low voltage applications where minimal power consumption, PCB area, and cost are primary requirements.
Documents
Technical documentation and resources