Overview
The TPA6111A2 is a stereo audio power amplifier produced by Texas Instruments. It is available in either an 8-pin SOIC or an 8-pin PowerPAD MSOP package. This amplifier is capable of delivering 150 mW of continuous RMS power per channel into 16-Ω loads. The device is fully specified for operation at 3.3 V and 5 V, making it suitable for a variety of applications including PC and mobile devices. The amplifier gain is externally configured using two resistors per input channel and does not require external compensation for settings of 0 to 20 dB.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Power (each channel) | 150 | mW |
| Supply Voltage Range | 2.5 to 5.5 | V |
| Operating Temperature Range | -40 to 85 | °C |
| Load Resistance | 16 Ω, 32 Ω, 10 kΩ | Ω |
| THD+N at 1 kHz (16 Ω load, 5 V) | 0.03% | % |
| THD+N at 1 kHz (32 Ω load, 5 V) | 0.02% | % |
| THD+N at 1 kHz (10 kΩ load, 5 V) | 0.005% | % |
| Supply Current (VDD = 3.3 V, SHUTDOWN = 0 V) | 1.5 to 3 mA | mA |
| Supply Current in Shutdown Mode | 1 to 10 µA | µA |
| Input Impedance | > 1 MΩ | Ω |
| Package Types | 8-pin SOIC, 8-pin PowerPAD MSOP |
Key Features
- 150-mW Stereo Output
- PC Power Supply Compatible
- Fully Specified for 3.3-V and 5-V Operation
- Operation to 2.5 V
- Pop Reduction Circuitry
- Internal Midrail Generation
- Thermal and Short-Circuit Protection
- Surface-Mount Packaging (SOIC and PowerPAD MSOP)
- Pin Compatible With TPA122, LM4880, and LM4881 (SOIC)
Applications
- Smart Phones and Wireless Handsets
- Portable Tablets
- Notebook PCs and Docking Stations
Q & A
- What is the maximum output power of the TPA6111A2 per channel?
The TPA6111A2 can deliver up to 150 mW of continuous RMS power per channel into 16-Ω loads.
- What are the supported supply voltages for the TPA6111A2?
The device is fully specified for operation at 3.3 V and 5 V, and it can operate from 2.5 V to 5.5 V.
- What types of packages are available for the TPA6111A2?
The TPA6111A2 is available in either an 8-pin SOIC or an 8-pin PowerPAD MSOP package.
- How is the gain of the TPA6111A2 configured?
The gain of the amplifier is externally configured using two resistors per input channel and does not require external compensation for settings of 0 to 20 dB.
- What is the THD+N performance of the TPA6111A2?
THD+N is 0.03% at 1 kHz for a 16-Ω load from 5 V, and less than 1% across the audio band of 20 Hz to 20 kHz. For 32-Ω loads, THD+N is reduced to less than 0.02% at 1 kHz.
- Does the TPA6111A2 have thermal and short-circuit protection?
- How does the shutdown mode work on the TPA6111A2?
The device can be put in shutdown mode by asserting the SHUTDOWN pin to a logic HIGH level, significantly reducing current consumption.
- What are some common applications for the TPA6111A2?
- Is the TPA6111A2 pin compatible with other devices?
- What is the input impedance of the TPA6111A2?
