Overview
The TPA6130A2RTJR, produced by Texas Instruments, is a 138-mW stereo headphone amplifier featuring I2C digital volume control. This amplifier is part of the DirectPath™ series, known for its ground-referenced outputs, which eliminate the need for output DC blocking capacitors. This design reduces board area and component height, making it ideal for portable and space-constrained applications. The amplifier offers high fidelity with a signal-to-noise ratio (SNR) of 98 dB and a high power supply rejection ratio (PSRR) greater than 100 dB, ensuring minimal noise interference.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD) | 2.5 | 5.5 | V | |
| Input Voltage (RIGHTINx, LEFTINx) | -2.5 | 3.6 | V | |
| Operating Free-Air Temperature Range | -40 | 85 | °C | |
| Operating Junction Temperature Range | -40 | 150 | °C | |
| Output Continuous Total Power Dissipation | See Thermal Information table | |||
| Quiescent Current (IDD) | 4 | mA | ||
| Output Offset Voltage | 150 | 400 | μV | |
| Power Supply Rejection Ratio (PSRR) | -109 | -90 | dB | |
| Common Mode Rejection Ratio (CMRR) | -68 | dB | ||
| Signal-to-Noise Ratio (SNR) | 98 | dB |
Key Features
- DirectPath™ Ground-Referenced Outputs: Eliminates the need for output DC blocking capacitors, reducing board area and component height.
- I2C Digital Volume Control: 64-step audio taper volume control with per-channel mute and enable, and software shutdown.
- High Power Supply Rejection Ratio: Greater than 100 dB PSRR for direct-to-battery connections without compromising audio quality.
- Differential Inputs: Maximum noise rejection with 68 dB CMRR.
- Advanced Pop and Click Suppression Circuitry: Minimizes noise during power-up and power-down.
- Multi-Mode Support: Stereo headphone, dual mono headphone, and single-channel BTL operation.
- Space Saving Packages: Available in 20-pin, 4 mm x 4 mm QFN and 16-ball, 2 mm x 2 mm DSBGA packages.
- ESD Protection: 8 kV HBM and IEC contact protection.
Applications
- Mobile Phones: Ideal for handheld devices requiring high audio fidelity and low power consumption.
- Portable Media Players: Suitable for devices that need compact, high-performance audio amplifiers.
- Notebook Computers: Enhances audio quality in laptop applications.
- High Fidelity Applications: Used in various audio systems requiring minimal noise and high fidelity output.
Q & A
- What is the power supply voltage range for the TPA6130A2RTJR?
The power supply voltage range is from 2.5 V to 5.5 V. - What type of volume control does the TPA6130A2RTJR feature?
The amplifier features a 64-step audio taper volume control via I2C interface. - What is the typical quiescent current consumption of the TPA6130A2RTJR?
The typical quiescent current consumption is 4 mA. - What is the signal-to-noise ratio (SNR) of the TPA6130A2RTJR?
The SNR is 98 dB. - Does the TPA6130A2RTJR support multiple operation modes?
Yes, it supports stereo headphone, dual mono headphone, and single-channel BTL operation. - What kind of ESD protection does the TPA6130A2RTJR have?
The amplifier has 8 kV HBM and IEC contact ESD protection. - What are the available package types for the TPA6130A2RTJR?
The amplifier is available in 20-pin, 4 mm x 4 mm QFN and 16-ball, 2 mm x 2 mm DSBGA packages. - What is the common mode rejection ratio (CMRR) of the TPA6130A2RTJR?
The CMRR is 68 dB. - How does the TPA6130A2RTJR reduce noise during power transitions?
The amplifier features advanced pop and click suppression circuitry to minimize noise during power-up and power-down. - What is the typical output power of the TPA6130A2RTJR into a 16 Ω load?
The amplifier can drive up to 300 mW into a 16 Ω load.
