LM49350RL/NOPB
ObsoleteHIGH PERF CODEC SUB-SYS W/ GND-REF ST HEADPH AMP ULTRA LOW EMI CLASS D LOUDSPKR AMP
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LM49350RL/NOPB
ObsoleteHIGH PERF CODEC SUB-SYS W/ GND-REF ST HEADPH AMP ULTRA LOW EMI CLASS D LOUDSPKR AMP
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Technical Specifications
Parameters and characteristics for this part
| Specification | LM49350RL/NOPB |
|---|---|
| Features | Short-Circuit and Thermal Protection, Volume Control, Mute, Shutdown, DAC, 3D, I2C, Depop, I2S |
| Max Output Power x Channels @ Load | 69 mW, 2 W |
| 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 D |
| 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 | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 3.88 | |
| 10 | $ 3.49 | |||
| 25 | $ 3.30 | |||
| Texas Instruments | SMALL T&R | 1 | $ 3.22 | |
| 100 | $ 2.82 | |||
| 250 | $ 1.98 | |||
| 1000 | $ 1.59 | |||
Description
General part information
LM49350 Series
The LM49350 is a high performance audio subsystem that supports both analog and digital audio functions. The LM49350 includes a high quality stereo DAC, a high quality stereo ADC, a stereo headphone amplifier that supports ground referenced output cap-less operation, a dual mode earpiece speaker amplifier, and a low EMI Class D loudspeaker amplifier. It is designed for demanding applications in mobile phones and other portable devices.
The LM49350 features dual bi-directional I2S or PCM audio interfaces for full range audio and an I2C compatible interface for control. The stereo DAC path features an SNR of 96dB with 24-bit 48 kHz input. The headphone amplifier delivers 69mWRMS(typ) to a 32Ω single-ended stereo load with less than 1% distortion (THD+N) when A_VDD= 3.3V. The earpiece speaker amplifier delivers 58mWRMS(typ) to a 32Ω bridged-tied load with less than 1% distortion (THD+N) when A_VDD= 3.3V. The loudspeaker amplifier delivers up to 495mW into an 8Ω load with less than 1% distortion when LS_VDD= 3.3V and up to 1.2W whenLS_VDD= 5.0V.
The LM49350 employs advanced techniques to reduce power consumption, to reduce controller overhead, to speed development time, 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