Overview
The TPA6211A1 is a 3.1-W mono fully-differential audio power amplifier designed by Texas Instruments. This amplifier is optimized for driving speakers with at least 3 Ω impedance, making it ideal for wireless handsets, PDAs, and notebook computers. It operates from a supply voltage range of 2.5 V to 5.5 V and consumes a low quiescent supply current of 4 mA at 5 V. The device is available in space-saving packages, including the 3-mm × 3-mm SON (DRB) and the 8-pin MSOP-PowerPAD™ (DGN).
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (VDD) | 2.5 | 5.5 | V | |
| Output Power (PO) at THD + N = 1%, f = 1 kHz, RL = 3 Ω | 2.22 | W | ||
| Output Power (PO) at THD + N = 1%, f = 1 kHz, RL = 4 Ω | 1.36 | W | ||
| Quiescent Supply Current | 4 | mA | ||
| Shutdown Current | 0.01 | μA | ||
| Operating Free-Air Temperature (TA) | -40 | 85 | °C | |
| Junction Temperature (TJ) | -40 | 150 | °C | |
| Power Supply Rejection Ratio (PSRR) | -85 | -60 | dB | |
| Common Mode Rejection Ratio (CMRR) | -63 | -40 | dB |
Key Features
- Fully differential design reduces RF rectification and eliminates the need for two input coupling capacitors.
- Low supply current: 4 mA typical at 5 V.
- Shutdown current: 0.01 μA typical.
- Fast startup with minimal pop.
- Only three external components required.
- Improved PSRR (–80 dB) and wide supply voltage range (2.5 V to 5.5 V) for direct battery operation.
- Space-saving packages: 3-mm × 3-mm SON (DRB) and 8-pin MSOP-PowerPAD™ (DGN).
Applications
The TPA6211A1 is ideal for various portable electronic devices, including:
- Wireless handsets
- PDAs
- Notebook computers
Q & A
- What is the typical output power of the TPA6211A1 at 5 V supply voltage and 3 Ω load resistance? The typical output power is 2.22 W at THD + N = 1%, f = 1 kHz, RL = 3 Ω.
- What is the quiescent supply current of the TPA6211A1 at 5 V? The quiescent supply current is 4 mA typical.
- What is the shutdown current of the TPA6211A1? The shutdown current is 0.01 μA typical.
- What is the operating temperature range of the TPA6211A1? The operating free-air temperature range is -40°C to 85°C.
- What is the junction temperature range of the TPA6211A1? The junction temperature range is -40°C to 150°C.
- What is the power supply rejection ratio (PSRR) of the TPA6211A1? The PSRR is -85 dB to -60 dB.
- What is the common mode rejection ratio (CMRR) of the TPA6211A1? The CMRR is -63 dB to -40 dB.
- In what packages is the TPA6211A1 available? The TPA6211A1 is available in 3-mm × 3-mm SON (DRB) and 8-pin MSOP-PowerPAD™ (DGN) packages.
- What are the key applications of the TPA6211A1? The key applications include wireless handsets, PDAs, and notebook computers.
- How many external components are required for the TPA6211A1? Only three external components are required.
