TFA9891UK: Smart Audio Amplifier
The TFA9891 is a high efficiency class-D audio amplifier with a sophisticated speaker boost and protection algorithm. It can deliver 7.2 W peak output power into an 8Ohm speaker at a supply voltage of 3.6 V. The internal boost converter raises the supply voltage to 9.5 V, providing ample headroom for major improvements in sound quality.
Unlike competing solutions, the adaptive sound maximizer algorithm uses feedback to accurately calculate both the temperature and the excursion, allowing the TFA9891 to adapt to changes in the acoustic environment.
Smart Audio Amplifier
Ordering Information
| Product | Status | Package version | Package name | Product description | Application | Po (W) | PSRR (dB) | Output configuration | Speaker impedance (BTL / SE) (Ohm) | Input format | VP [min - max] (V) | Class | Power Down | Volume control | Remarks |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TFA9891UK/N1 | Active | 9.5 V boosted audio system with adaptive sound maximizer, speaker protection and 3 bands DRC | 3.7 | 75 | 2 x TDM-I2S or 1 x PDM | D Boosted |
Package Information
| Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | LeadFree Conversion Date | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TFA9891UK/N1 | Active | TFA9891UK/N1AZ (9353 034 18062) | Standard Marking |    | Always Pb-free | 1 | 1 |
