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 per Channel | 150 mW | RMS into 16-Ω loads |
| Supply Voltage Range | 2.5 V to 5.5 V | V |
| Operating Temperature Range | -40 to 85 | °C |
| Package Types | 8-pin SOIC, 8-pin PowerPAD MSOP | |
| Total Harmonic Distortion + Noise (THD+N) | 0.03% at 1 kHz (16-Ω load, 5 V) | % |
| Power Supply Rejection Ratio (PSRR) | 70 dB | dB |
| Supply Current (Typical) | 1.5 mA (VDD = 3.3 V), 1.6 mA (VDD = 5.5 V) | mA |
| Thermal Resistance (Junction-to-Ambient) | 114.7 °C/W (SOIC), 55.9 °C/W (MSOP) | °C/W |
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 output power of the TPA6111A2 per channel?
The TPA6111A2 delivers 150 mW of continuous RMS power per channel into 16-Ω loads.
- What are the available package types for the TPA6111A2?
The TPA6111A2 is available in 8-pin SOIC and 8-pin PowerPAD MSOP packages.
- What is the operating temperature range of the TPA6111A2?
The operating temperature range is -40 to 85 °C.
- What is the typical THD+N performance of the TPA6111A2?
The THD+N is 0.03% at 1 kHz when driving a 16-Ω load from 5 V, and less than 1% across the audio band of 20 Hz to 20 kHz.
- Is the TPA6111A2 compatible with other devices?
Yes, it is pin compatible with TPA122, LM4880, and LM4881 (SOIC).
- What protection features does the TPA6111A2 have?
The device includes thermal and short-circuit protection).
- How is the amplifier gain configured in the TPA6111A2?
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).
- What is the power supply rejection ratio (PSRR) of the TPA6111A2?
The PSRR is 70 dB).
- What are some common applications of the TPA6111A2?
Common applications include smart phones, wireless handsets, portable tablets, and notebook PCs and docking stations).
- What is the typical supply current of the TPA6111A2?
The typical supply current is 1.5 mA at VDD = 3.3 V and 1.6 mA at VDD = 5.5 V).
