NXP Semiconductors UM10340-5 User Manual

Contents

NXP Semiconductors UM10340-5 User Manual Manual pdf 1 page image

UM10340_5TFA9879 digital input mono Class-D amplifier demo PCBRev. 05 — 30 aug. 2011 User manualDocument informationInfo ContentKeywords Class-D amplifier, Digital input, High efficiency, Filter freeAbstract This User Manual describes the TFA9879 digital input mono Class-Ddemonstration PCB based on NXP Semiconductors’ TFA9879 filter-freemono BTL Class-D audio amplifier device. The TFA9879 device isintended for portable applications that support a digital output, which isless sensitive to external RF fields. The low power consumption willincrease the battery life and an excellent audio performance with highPSRR is achieved by the integrated feedback loop.Furthermore the device is very robust due to the integrated protectionslike OCP, OTP and several input protections.The demonstration PCB is designed to operate from a single supply witha wide supply voltage range of 2.5V…5.5V delivering an output power upto 1.6WRMS in 8Ω BTL or 2.7WRMS 4Ω BTL. The application PCB area forthe TFA9879 is very small because only three external components arerequired. The demo board is EMC compliant and contains 15kV ESDprotections at the speaker output.