Overview
The TPA6111A2DGNG4 is a high-performance stereo audio power amplifier produced by Texas Instruments. This device is packaged in either an 8-pin SOIC or an 8-pin PowerPAD MSOP package, enabling it to deliver 150 mW of continuous RMS power per channel into 16-Ω loads. The amplifier is designed to operate from input voltage supplies of 3.3 V and 5 V, making it versatile for various applications. It features externally configurable gain using two resistors per input channel, without requiring external compensation for settings of 0 to 20 dB. The TPA6111A2 also includes pop reduction circuitry, internal midrail generation, and thermal and short-circuit protection, ensuring reliable and high-quality audio output.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOIC, PowerPAD MSOP | - |
| Pins | 8 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage | 2.5 V to 5.5 V | V |
| Output Power per Channel | 150 mW (THD ≤ 0.1%, f = 1 kHz, RL = 16 Ω) | mW |
| THD+N (16 Ω, 5 V, 1 kHz) | 0.03% | % |
| THD+N (32 Ω, 5 V, 1 kHz) | 0.02% | % |
| PSRR | 70 dB (VDD = 3.2 V to 3.4 V) | dB |
| Input Impedance | > 1 MΩ | Ω |
| Supply Current (Active) | 1.5 to 3.2 mA (VDD = 3.3 V to 5.5 V) | mA |
| Supply Current (Shutdown) | 1 to 10 µA | µA |
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?
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 operates from input voltage supplies of 2.5 V to 5.5 V.
- What is the THD+N performance of the TPA6111A2 at 1 kHz with a 16-Ω load?
The THD+N is 0.03% at 1 kHz when driving a 16-Ω load from 5 V.
- Does the TPA6111A2 require external compensation for gain settings?
No, the amplifier gain is externally configured by means of two resistors per input channel and does not require external compensation for settings of 0 to 20 dB.
- What types of protection does the TPA6111A2 include?
The device includes thermal and short-circuit protection.
- What are the package options for the TPA6111A2?
The device is available in 8-pin SOIC and 8-pin PowerPAD MSOP packages.
- Is the TPA6111A2 pin-compatible with other amplifiers?
- What is the typical supply current of the TPA6111A2 in active mode?
The typical supply current is 1.5 to 3.2 mA (VDD = 3.3 V to 5.5 V).
- How does the shutdown mode affect the supply current of the TPA6111A2?
In shutdown mode, the supply current is reduced to 1 to 10 µA.
- What is the input impedance of the TPA6111A2?
The input impedance is greater than 1 MΩ.
