TFA9895UK: Smart Audio Amplifier
The TFA9895 is a high efficiency class-D audio amplifier with a sophisticated speaker boost protection algorithm that features multi-band compression. It can deliver 2.65 W (RMS; THD = 1 %) output power into a 4 Ω speaker at a battery voltage of 3.6 V. The internal boost converter raises the supply voltage to 5.3 V, providing ample headroom for major improvements in sound quality.
The multi-band processing improves audio quality and apparent volume by allowing the gain to remain stable in most of the signal while the protection reacts to only those portions that would be unsafe. The TFA9895 also adds a high-frequency noise gate that improves the sound of poor-quality audio sources.
Data Sheets (1)
| Name/Description | Modified Date |
|---|---|
| Boosted class-D audio amplifier with SpeakerBoost protection algorithm and dynamic range compressor (REV 1.0) PDF (305.0 kB) TFA9895_SDS | 23 Oct 2013 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TFA9895UK/N2 | Active | 5.3 V Boosted audio system with adaptive sound maximizer, speaker protection and Receiver features | 2.65 | 90 | 2 x TDM-I2S | D Boosted | |||||||||
| TFA9895UK | Active | 5.3 V Boosted audio system with adaptive sound maximizer, speaker protection and Receiver features | 2.65 | 90 | 2 x TDM-I2S | D Boosted | |||||||||
| TFA9895UK/N1 | End of Life | 5.3 V Boosted audio system with adaptive sound maximizer, speaker protection and Receiver features | 2.65 | 90 | 2 x TDM-I2S | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TFA9895UK/N1 | Discontinued | TFA9895UK/N1J (9352 996 93118) | Standard Marking | TFA9895UK/N1 |    | Always Pb-free | 1 | 1 | ||||
| Discontinued | TFA9895UK/N1Z (9352 996 93023) | Standard Marking | TFA9895UK/N1 | | Always Pb-free | 1 | 1 | |||||
| TFA9895UK/N2 | Active | TFA9895UK/N2AZ (9353 034 21062) | Standard Marking | TFA9895UK/N2 | | Always Pb-free | 1 | 1 | ||||
| Active | TFA9895UK/N2BZ (9353 034 21079) | Standard Marking | TFA9895UK/N2 | | Always Pb-free | 1 | 1 |
