DatasheetsPDF.com

TFA9894D_SDS Dataheets PDF



Part Number TFA9894D_SDS
Manufacturers NXP
Logo NXP
Description High Efficiency Class-D Audio Amplifier
Datasheet TFA9894D_SDS DatasheetTFA9894D_SDS Datasheet (PDF)

TFA9894D_SDS High Efficiency Class-D Audio Amplifier Rev. 1 — 14 May 2019 Product data sheet 1 General description The TFA9894D is a high efficiency 10 V boosted class-D audio amplifier with a sophisticated SpeakerBoost and protection algorithm. It can deliver up to 5.6 W (AVG) output power into an 8 Ω speaker and up to 6.2 W (AVG) output power into 4 Ω speaker, at a battery supply voltage of 4.0 V. The internal adaptive DC-to-DC converter raises the power supply voltage up to 10 V, providing .

  TFA9894D_SDS   TFA9894D_SDS



Document
TFA9894D_SDS High Efficiency Class-D Audio Amplifier Rev. 1 — 14 May 2019 Product data sheet 1 General description The TFA9894D is a high efficiency 10 V boosted class-D audio amplifier with a sophisticated SpeakerBoost and protection algorithm. It can deliver up to 5.6 W (AVG) output power into an 8 Ω speaker and up to 6.2 W (AVG) output power into 4 Ω speaker, at a battery supply voltage of 4.0 V. The internal adaptive DC-to-DC converter raises the power supply voltage up to 10 V, providing ample headroom for major improvements in sound quality. A safe working environment is provided for the speaker under all operating conditions. The TFA9894D maximizes acoustic output while ensuring membrane displacement and voice coil temperature do not exceed their rated limits. This function is based on a speaker box model that operates in all speaker environments (e.g. free air, closed box or vented box). Furthermore, advanced signal processing ensures that the quality of the audio signal is never degraded by unwanted clipping or distortion in the amplifier or speaker. The adaptive sound maximizer algorithm uses feedback to calculate both the temperature and the excursion accurately, allowing the TFA9894D to adapt to changes in the acoustic environment. Internal adaptive DC-to-DC conversion boosts the supply rail to provide additional headroom and power output. The supply voltage is only raised when necessary. This maximizes the output power of the class-D audio amplifier while limiting quiescent power consumption. The device can be configured to drive either a hands-free speaker for audio playback, or a receiver speaker, for handset playback, allowing it to be embedded in platforms supporting both a hands-free speaker and a handset speaker. The maximum output power, the gain, and the noise levels are lower in handset call use case than in handsfree call use case. The TFA9894D also incorporates battery protection. By limiting the supply current when the battery voltage is low, it prevents the audio system from drawing excessive load currents from the battery, which could cause a system undervoltage. This circuitry minimizes the impact of a falling battery voltage by preventing unexpected device switch off due to excessive current drawn from the battery. The device features a second order closed loop architecture, used in a class-D audio amplifier, providing excellent audio performance and high supply voltage ripple rejection. The audio input interface is TDM and the control settings are communicated via an I2Cbus interface. The TFA9894D is available in a 48-bump wafer level chip-size package (WLCSP) with a 400 μm pitch. NXP Semiconductors TFA9894D_SDS High Efficiency Class-D Audio Amplifier 2 Features and benefits • Sophisticated SpeakerBoost and protection algorithm that maximizes speaker performance while protecting the speaker: – Fully embedded software, no additional license fee, or porting required – Fully integrated solution, including DSP, ampl.


DLLR-L30G TFA9894D_SDS LTM8003


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)