TPA2051 Series
2.9-W, mono, analog input Class-D audio amplifier with 25-mW headphone driver
Manufacturer: Texas Instruments
Catalog(1 parts)
| Part | Max Output Power x Channels @ Load▲▼ | Type | Package / Case | Supplier Device Package | Output Type | Features | Mounting Type | Operating Temperature▲▼ | Operating Temperature▲▼ | Voltage - Supply▲▼ | Voltage - Supply▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|
0.02500000037252903 W, 2.9000000953674316 W | Class D | 25-UFBGA, DSBGA | 25-DSBGA | 1-Channel (Mono) with Stereo Headphones | Depop, I2C, Input Multiplexer, Short-Circuit and Thermal Protection, Shutdown, Volume Control | Surface Mount | 85 °C | -40 °C | 2.5 V | 5.5 V |
Key Features
• Mono Class-D Amp: 730 mW into 8from 3.6 V Supply (1% THD)Class-D Bypass SwitchesDirectPath Stereo Headphone AmplifierNo Output Capacitors RequiredSpeakerGuard Automatic Gain Control (AGC)One Differential Mono and Two Stereo Single-Ended Inputs3:1 Input MUX with Mode Control32-Step Volume Control for Both Input ChannelsIndependent Volume Controls for All InputsIndependent Shutdown for Headphone and Class-D AmplifiersI2C InterfaceShort-Circuit and Thermal-Overload ProtectionOperates from 2.5 V to 5.5 V25-Ball 2,16 mm × 2,11 mm, 0,4 mm pitch WCSPAPPLICATIONSSmart Phones / Cellular PhonesPortable Media PlayersPortable GamingMultimedia PlatformsMono Class-D Amp: 730 mW into 8from 3.6 V Supply (1% THD)Class-D Bypass SwitchesDirectPath Stereo Headphone AmplifierNo Output Capacitors RequiredSpeakerGuard Automatic Gain Control (AGC)One Differential Mono and Two Stereo Single-Ended Inputs3:1 Input MUX with Mode Control32-Step Volume Control for Both Input ChannelsIndependent Volume Controls for All InputsIndependent Shutdown for Headphone and Class-D AmplifiersI2C InterfaceShort-Circuit and Thermal-Overload ProtectionOperates from 2.5 V to 5.5 V25-Ball 2,16 mm × 2,11 mm, 0,4 mm pitch WCSPAPPLICATIONSSmart Phones / Cellular PhonesPortable Media PlayersPortable GamingMultimedia Platforms
Description
AI
The TPA2051D3 is an audio subsystem with a mono Class-D power amplifier, a stereo DirectPath headphone amplifier, and bypass switches. The DirectPath headphone amplifier eliminates the need for external dc-blocking output capacitors. The built-in charge pump creates a negative supply voltage for the headphone amplifier, allowing a 0 V dc bias at the output. The DirectPath headphone amplifier drives 25 mW into 16speakers from a 4.2 V supply.
The subsystem includes three inputs: A differential mono input and two stereo single-ended (SE) inputs. The stereo inputs are also configurable as differential mono inputs. Each input channel has an independent volume control. Seven operating modes provide input-to-output combinations and shutdown control. Operating mode and volume levels are controlled over a 1.8 V compatible I2C interface.
The TPA2051D3 uses SpeakerGuardTMtechnology to prevent output clipping distortion and excessive power to the speaker and headphones.
The Class-D amplifier includes a bypass mode. This allows the baseband IC (BB) to directly drive the 8speaker. This is useful for dual-mode speaker phones in voice—only mode.
The Class-D amplifier uses 4.9 mA and the DirectPath amplifier uses 4.1 mA of typical quiescent current. Total supply current reduces to less than 1 µA in shutdown.
The TPA2051D3 is available in a 25-bump 2,16 mm × 2,11 mm, 0,4 mm pitch WCSP with less than 0.8 mm height.
The TPA2051D3 is an audio subsystem with a mono Class-D power amplifier, a stereo DirectPath headphone amplifier, and bypass switches. The DirectPath headphone amplifier eliminates the need for external dc-blocking output capacitors. The built-in charge pump creates a negative supply voltage for the headphone amplifier, allowing a 0 V dc bias at the output. The DirectPath headphone amplifier drives 25 mW into 16speakers from a 4.2 V supply.
The subsystem includes three inputs: A differential mono input and two stereo single-ended (SE) inputs. The stereo inputs are also configurable as differential mono inputs. Each input channel has an independent volume control. Seven operating modes provide input-to-output combinations and shutdown control. Operating mode and volume levels are controlled over a 1.8 V compatible I2C interface.
The TPA2051D3 uses SpeakerGuardTMtechnology to prevent output clipping distortion and excessive power to the speaker and headphones.
The Class-D amplifier includes a bypass mode. This allows the baseband IC (BB) to directly drive the 8speaker. This is useful for dual-mode speaker phones in voice—only mode.
The Class-D amplifier uses 4.9 mA and the DirectPath amplifier uses 4.1 mA of typical quiescent current. Total supply current reduces to less than 1 µA in shutdown.
The TPA2051D3 is available in a 25-bump 2,16 mm × 2,11 mm, 0,4 mm pitch WCSP with less than 0.8 mm height.