LM4937RL/NOPB
Obsolete1.25-W, MONO CLASS-D AUDIO AMP WITH 175-MW EARPIECE AMP & 80-MW STEREO HEADPHONE AMP
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LM4937RL/NOPB
Obsolete1.25-W, MONO CLASS-D AUDIO AMP WITH 175-MW EARPIECE AMP & 80-MW STEREO HEADPHONE AMP
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Technical Specifications
Parameters and characteristics for this part
| Specification | LM4937RL/NOPB |
|---|---|
| Features | Depop, I2S, Mute, I2C, SPI, Differential Inputs, Volume Control, Shutdown |
| Max Output Power x Channels @ Load | 1.25 W, 80 mW |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Type | 1-Channel (Mono) with Mono and Stereo Headphones |
| Package / Case | 36-WFBGA, DSBGA |
| Supplier Device Package | 36-DSBGA |
| Supplier Device Package [x] | 3.5 |
| Supplier Device Package [y] | 3.24 |
| Type | Class AB |
| Voltage - Supply [Max] | 5.5 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 | $ | |
|---|---|---|---|---|
| Texas Instruments | SMALL T&R | 1 | $ 5.03 | |
| 100 | $ 4.10 | |||
| 250 | $ 3.23 | |||
| 1000 | $ 2.73 | |||
Description
General part information
LM4937 Series
The LM4937 is an integrated audio sub-system designed for mono voice, stereo music cell phones connecting to base band processors with mono differential analog voice paths. Operating on a 3.3V supply, it combines a mono speaker amplifier delivering 520mW into an 8Ω load, a stereo headphone amplifier delivering 36mW per channel into a 32Ω load, and a mono earpiece amplifier delivering 55mW into a 32Ω load. It integrates the audio amplifiers, volume control, mixer, and power management control all into a single package. In addition, the LM4937 routes and mixes the single-ended stereo and differential mono inputs into multiple distinct output modes. The LM4937 features an I2S serial interface for full range audio and an I2C or SPI compatible interface for control. The full range music path features an SNR of 85dB with a 192kHz playback.
Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal amount of external components.
The LM4937 is an integrated audio sub-system designed for mono voice, stereo music cell phones connecting to base band processors with mono differential analog voice paths. Operating on a 3.3V supply, it combines a mono speaker amplifier delivering 520mW into an 8Ω load, a stereo headphone amplifier delivering 36mW per channel into a 32Ω load, and a mono earpiece amplifier delivering 55mW into a 32Ω load. It integrates the audio amplifiers, volume control, mixer, and power management control all into a single package. In addition, the LM4937 routes and mixes the single-ended stereo and differential mono inputs into multiple distinct output modes. The LM4937 features an I2S serial interface for full range audio and an I2C or SPI compatible interface for control. The full range music path features an SNR of 85dB with a 192kHz playback.
Documents
Technical documentation and resources
