Overview
The LM49350RL/NOPB, produced by Texas Instruments (formerly National Semiconductor), is a high-performance audio codec subsystem designed for demanding applications in mobile and portable devices. This component integrates a stereo DAC, a stereo ADC, a ground-referenced stereo headphone amplifier, a dual-mode earpiece speaker amplifier, and a low EMI Class D loudspeaker amplifier. It is optimized for low power consumption, minimal PCB area, and reduced controller overhead, making it ideal for smart phones, mobile phones, VOIP phones, and other portable audio devices.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Resolution | 24 bit | |
| Conversion Rate | Up to 192 kHz | |
| Interface Type | Serial (I2C), I2S/PCM | |
| Number of ADCs | 2 | |
| Number of DACs | 2 | |
| Supply Voltage - Min | 1.6 V, 1.7 V, 2.7 V | |
| Supply Voltage - Max | 2 V, 4.5 V, 5.5 V | |
| Minimum Operating Temperature | -40°C | |
| Maximum Operating Temperature | +85°C | |
| Package / Case | 36-DSBGA | |
| Output Power | Up to 1.2 W (loudspeaker), 69 mW (headphone) | |
| SNR - Signal to Noise Ratio | Up to 96 dB (DAC), 94 dB (ADC) |
Key Features
- High-performance stereo DAC and ADC with up to 96 dB and 94 dB SNR respectively
- Ground-referenced stereo headphone amplifier with cap-less operation
- Dual-mode earpiece speaker amplifier
- Low EMI Class D loudspeaker amplifier delivering up to 1.2 W
- Dual bi-directional I2S or PCM compatible digital audio interfaces
- I2C compatible control interface
- Micro-power shutdown mode and low power consumption
- Short-circuit and thermal protection
- Volume control and mute functions
Applications
- Smart Phones
- Mobile Phones and VOIP Phones
- Portable GPS Navigators and Gaming Devices
- Portable DVD/CD/AAC/MP3/MP4 Players
- Audio Interfaces in various portable devices
Q & A
- What is the LM49350RL/NOPB used for?
The LM49350RL/NOPB is used as a high-performance audio codec subsystem in mobile and portable devices. - What are the key components of the LM49350RL/NOPB?
It includes a stereo DAC, a stereo ADC, a ground-referenced stereo headphone amplifier, a dual-mode earpiece speaker amplifier, and a low EMI Class D loudspeaker amplifier. - What is the maximum output power of the loudspeaker amplifier?
The loudspeaker amplifier can deliver up to 1.2 W into an 8Ω load. - What is the signal-to-noise ratio (SNR) of the DAC and ADC?
The DAC has an SNR of up to 96 dB, and the ADC has an SNR of up to 94 dB. - What are the supported digital audio interfaces?
The LM49350RL/NOPB supports dual bi-directional I2S or PCM digital audio interfaces. - What is the operating temperature range of the LM49350RL/NOPB?
The operating temperature range is -40°C to +85°C. - What package type is the LM49350RL/NOPB available in?
The component is available in a 36-DSBGA package. - Does the LM49350RL/NOPB have power-saving features?
Yes, it has a micro-power shutdown mode and is designed for low power consumption. - What kind of protection does the LM49350RL/NOPB offer?
The component offers short-circuit and thermal protection. - Is the LM49350RL/NOPB RoHS compliant?
Yes, the LM49350RL/NOPB is RoHS compliant.
