Overview
The TPA6111A2DRG4 is a 150-mW 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, making it versatile for various applications. It is designed to deliver 150 mW of continuous RMS power per channel into 16-Ω loads, with a wide supply voltage range of 2.5 V to 5.5 V. 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. This amplifier is particularly noted for its low total harmonic distortion plus noise (THD+N) and high signal-to-noise ratio (SNR), making it suitable for high-quality audio applications.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Supply Voltage | 2.5 to 5.5 | V | |
| Output Power (each channel) | 150 | mW | VDD = 5 V, RL = 16 Ω, THD ≤ 0.1%, f = 1 kHz |
| THD+N | 0.03% at 1 kHz, < 1% across 20 Hz to 20 kHz | % | VDD = 5 V, RL = 16 Ω |
| PSRR | 83 | dB | |
| SNR | 100 | dB | PO = 100 mW, AV = 1 |
| Input Impedance | > 1 MΩ | Ω | |
| Junction-to-Ambient Thermal Resistance (SOIC) | 114.7 | °C/W | |
| Junction-to-Ambient Thermal Resistance (MSOP) | 55.9 | °C/W | |
| Operating Junction Temperature | -40 to 150 | °C |
Key Features
- Pin compatible with TPA122, LM4880, and LM4881 in SOIC packages.
- Externally configurable gain using two resistors per input channel, with no external compensation required for settings of 0 to 20 dB.
- Low THD+N: 0.03% at 1 kHz and less than 1% across the audio band of 20 Hz to 20 kHz for 16-Ω loads.
- High signal-to-noise ratio (SNR): 100 dB.
- Shutdown mode with low quiescent current when the SHUTDOWN pin is held high.
- Wide supply voltage range: 2.5 V to 5.5 V.
- Available in 8-pin SOIC and 8-pin PowerPAD MSOP packages.
Applications
- Smart Phones and Wireless Handsets
- Portable Tablets
- Notebook PCs and Docking Stations
- Other portable audio devices requiring high-quality audio output.
Q & A
- What is the maximum output power of the TPA6111A2DRG4?
The TPA6111A2DRG4 can deliver up to 150 mW of continuous RMS power per channel into 16-Ω loads at 5 V supply voltage.
- What is the typical THD+N performance of the TPA6111A2DRG4?
The THD+N is 0.03% at 1 kHz and less than 1% across the audio band of 20 Hz to 20 kHz for 16-Ω loads.
- How is the gain configured in the TPA6111A2DRG4?
The gain is externally configured using two resistors per input channel, with no external compensation required for settings of 0 to 20 dB.
- What are the available package types for the TPA6111A2DRG4?
The device is available in 8-pin SOIC and 8-pin PowerPAD MSOP packages.
- What is the operating junction temperature range of the TPA6111A2DRG4?
The operating junction temperature range is -40°C to 150°C.
- How does the shutdown mode work in the TPA6111A2DRG4?
The device can be put in shutdown mode by holding the SHUTDOWN pin high, significantly reducing the quiescent current.
- What is the signal-to-noise ratio (SNR) of the TPA6111A2DRG4?
The SNR is 100 dB at PO = 100 mW and AV = 1.
- What are the typical applications of the TPA6111A2DRG4?
Typical applications include smart phones, wireless handsets, portable tablets, and notebook PCs and docking stations.
- What is the input impedance of the TPA6111A2DRG4?
The input impedance is greater than 1 MΩ.
- What is the power supply rejection ratio (PSRR) of the TPA6111A2DRG4?
The PSRR is 83 dB.
