LM4921 Series
16-bit stereo DAC with 50-mW stereo headphone amp & volume control
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
16-bit stereo DAC with 50-mW stereo headphone amp & volume control
| Part | Package / Case | Operating Temperature [Max] | Operating Temperature [Min] | Max Output Power x Channels @ Load [custom] | Max Output Power x Channels @ Load [custom] | Max Output Power x Channels @ Load [custom] | Mounting Type | Type | Voltage - Supply [Max] | Voltage - Supply [Min] | Output Type | Features | Supplier Device Package | Board Type | Amplifier Type | Supplied Contents | Utilized IC / Part |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments LM4921ITL/NOPB | 20-WFBGA, DSBGA | 85 °C | -40 °C | 50 mW | 2 | 32 Ohm | Surface Mount | Class AB | 5.5 V | 2.6 V | Headphones, 2-Channel (Stereo) | DAC, I2S, Mute, Shutdown, SPI, Standby, Thermal Protection, Volume Control | 20-DSBGA | ||||
Texas Instruments LM4921ITLX/NOPB | 20-WFBGA, DSBGA | 85 °C | -40 °C | 50 mW | 2 | 32 Ohm | Surface Mount | Class AB | 5.5 V | 2.6 V | Headphones, 2-Channel (Stereo) | DAC, I2S, Mute, Shutdown, SPI, Standby, Thermal Protection, Volume Control | 20-DSBGA | ||||
Texas Instruments LM4921ITLEVAL | 50 mW | 2 | 32 Ohm | 5.5 V | 2.6 V | Headphones, 2-Channel (Stereo) | Fully Populated | Class AB | Board(s) | LM4921 |
Key Features
• 16-Bit Resolution Stereo DACI2S Digital Audio Data Serial InterfaceSPI Serial Interface (Control Register)Volume Control (32 steps; 1.5 dB Increments)Up to 50mW/Channel Stereo Headphone AmplifierZero Crossing Detection for Silent Attenuation Steps2.6VDCto 5.0VDCDigital Supply Voltage Range2.6VDCto 5.5VDCAnalog Supply Voltage Range (See )Unity-Gain Stable Headphone AmplifiersAvailable in the 20-bump DSBGA PackageKey SpecificationsPSRR at 217Hz, A/DVDD= 3V: 52dB (typ)POUTat AVDD= 3.0V, 32Ω< 0.05% THD: 13mW (typ)< 0.05% THD: 26mW (typ)Supply Voltage RangeDVDD: 2,6V to 5.0VAVDD: (See ) 2.6V to 5.5VShutdown Current: 1µA (typ)All trademarks are the property of their respective owners.16-Bit Resolution Stereo DACI2S Digital Audio Data Serial InterfaceSPI Serial Interface (Control Register)Volume Control (32 steps; 1.5 dB Increments)Up to 50mW/Channel Stereo Headphone AmplifierZero Crossing Detection for Silent Attenuation Steps2.6VDCto 5.0VDCDigital Supply Voltage Range2.6VDCto 5.5VDCAnalog Supply Voltage Range (See )Unity-Gain Stable Headphone AmplifiersAvailable in the 20-bump DSBGA PackageKey SpecificationsPSRR at 217Hz, A/DVDD= 3V: 52dB (typ)POUTat AVDD= 3.0V, 32Ω< 0.05% THD: 13mW (typ)< 0.05% THD: 26mW (typ)Supply Voltage RangeDVDD: 2,6V to 5.0VAVDD: (See ) 2.6V to 5.5VShutdown Current: 1µA (typ)All trademarks are the property of their respective owners.
Description
AI
The LM4921 combines a 16-bit resolution stereo I2S input digital-to-analog converter (DAC) with a stereo headphone audio power amplifier. It is primarily designed for demanding applications in mobile phones and other portable communication device applications. The LM4921 features an I2S serial interface for the digital audio information and a 16-bit SPI serial interface for internal register control and communication. With AVDDand DVDD= 3.0VDCand driving a 32Ω single-ended load to a 26mWRMSoutput level the distortion (THD+N) of the LM4921 will be less than 0.5%. The LM4921 also features a programmable 32-step digital volume control accessed through an SPI interface.
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 is a primary requirement.
The LM4921 features a low-power consumption shutdown mode, and also has an internal thermal shutdown protection mechanism.
The LM4921 combines a 16-bit resolution stereo I2S input digital-to-analog converter (DAC) with a stereo headphone audio power amplifier. It is primarily designed for demanding applications in mobile phones and other portable communication device applications. The LM4921 features an I2S serial interface for the digital audio information and a 16-bit SPI serial interface for internal register control and communication. With AVDDand DVDD= 3.0VDCand driving a 32Ω single-ended load to a 26mWRMSoutput level the distortion (THD+N) of the LM4921 will be less than 0.5%. The LM4921 also features a programmable 32-step digital volume control accessed through an SPI interface.
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 is a primary requirement.
The LM4921 features a low-power consumption shutdown mode, and also has an internal thermal shutdown protection mechanism.