Overview
The TPA6205A1DGNRG4 is a 1.25-W mono, fully differential audio power amplifier designed and manufactured by Texas Instruments. This device is optimized for driving speakers with at least 8-Ω impedance and operates from a supply voltage range of 2.5 V to 5.5 V. It is particularly suited for applications requiring low power consumption and high audio quality, such as wireless handsets and personal digital assistants (PDAs).
Key Specifications
| Parameter | Value |
|---|---|
| Power Output | 1.25 W into 8-Ω at THD = 1% from a 5-V supply |
| Supply Voltage | 2.5 V to 5.5 V |
| Quiescent Supply Current | 1.7 mA (typical) |
| Shutdown Current | < 10 µA |
| Input Logic Thresholds | 1.8 V compatible |
| PSRR (Power Supply Rejection Ratio) | 85 dB from 90 Hz to 5 kHz |
| CMRR (Common-Mode Rejection Ratio) | –74 dB |
| Input Impedance | 2 MΩ |
| Output Impedance | >10 kΩ in shutdown mode |
| Package Options | 8-Pin MSOP-PowerPAD, 8-Pin SON, 8-Pin MicroStar Junior BGA |
| Operating Temperature Range | –40°C to 85°C |
Key Features
- Fully differential design reduces RF rectification and eliminates the need for input coupling capacitors.
- Low supply current and shutdown current for power-efficient operation.
- High PSRR (Power Supply Rejection Ratio) and CMRR (Common-Mode Rejection Ratio) for improved audio quality.
- Fast start-up time of 4 ms with minimal pop noise.
- Optional bypass capacitor for improved performance.
- Available in space-saving package options including MSOP-PowerPAD, SON, and MicroStar Junior BGA.
Applications
The TPA6205A1DGNRG4 is ideal for various portable and mobile audio applications, including:
- Wireless handsets and smartphones.
- Personal digital assistants (PDAs) and tablets.
- Portable audio players and speakers.
- Other battery-powered audio devices requiring high audio quality and low power consumption.
Q & A
- What is the maximum power output of the TPA6205A1DGNRG4?
The TPA6205A1DGNRG4 can deliver up to 1.25 W into an 8-Ω load at THD = 1% from a 5-V supply. - What is the supply voltage range for the TPA6205A1DGNRG4?
The device operates from a supply voltage range of 2.5 V to 5.5 V. - What is the typical quiescent supply current of the TPA6205A1DGNRG4?
The typical quiescent supply current is 1.7 mA. - What is the shutdown current of the TPA6205A1DGNRG4?
The shutdown current is less than 10 µA. - What are the input logic thresholds for the TPA6205A1DGNRG4?
The input logic thresholds are 1.8 V compatible. - What is the PSRR of the TPA6205A1DGNRG4?
The PSRR is 85 dB from 90 Hz to 5 kHz. - What is the CMRR of the TPA6205A1DGNRG4?
The CMRR is –74 dB. - What are the package options available for the TPA6205A1DGNRG4?
The device is available in 8-Pin MSOP-PowerPAD, 8-Pin SON, and 8-Pin MicroStar Junior BGA packages. - What is the operating temperature range of the TPA6205A1DGNRG4?
The operating temperature range is –40°C to 85°C. - What are some typical applications for the TPA6205A1DGNRG4?
Typical applications include wireless handsets, PDAs, portable audio players, and other battery-powered audio devices.
