Texas Instruments TPA6211x1/TPA6211x1-Q1 Class-AB Audio Amplifiers
Texas Instruments TPA6211x1/TPA6211x1-Q1 Mono Class-AB Audio Amplifiers are 3.1W fully differential amplifiers. These devices are designed to drive a speaker with at least 3Ω impedance while consuming only 20mm2 total printed-circuit board (PCB) area in most applications. These devices operate from 2.5V to 5.5V while drawing only 4mA of quiescent supply current. Texas Instruments TPA6211x1/TPA6211x1-Q1 are available in the space-saving 3mm × 3mm SON (DRB) and the 8-pin MSOP-PowerPAD (DGN) packages. Features like –80dB supply voltage rejection from 20Hz to 2kHz, improved RF rectification immunity, small PCB area, and a fast startup with minimal pop make these devices ideal for PDA and smartphone applications. The TPA6211x1-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- Designed for wireless or cellular handsets and PDAs
- 3.1W into 3Ω from a 5V supply at THD = 10% (Typ)
- 4mA Typ at 5V low supply current
- 0.01µA Typ shutdown current
- Fast startup with minimal pop
- Only three external components
- Improved PSRR (–80dB) and wide supply
- Voltage (2.5V to 5.5V) for direct battery operation
- Fully differential design reduces RF rectification
- –63dB CMRR eliminates two input coupling capacitors
Applications
- Automotive audio
- Emergency calls
- Driver notifications
- Cluster chimes
Functional Block Diagram
