MP3 player

MP3 player

Whatever your MP3 player design, you can rely on NXP Semiconductors to enhance audio quality and simplify your designs with our dedicated interface solutions. Our comprehensive standard product portfolio is available in the smallest packages, backed by a secure and cost effective supply chain.

Block diagram

Key features and benefits

Enhance user experience, simplify your design

Whatever you need for your MP3 player design, from application specific solutions for peripheral functions - like advanced audio, highly integrated SD card interface solutions – or simply a comprehensive portfolio of standard products, you can rely on NXP Semiconductors.

Advanced audio
We provide you with affordable and easy-to-use audio solutions that deliver superior sound quality and reduce component count.

Flexible design
Our ultra low power configurable logic gives you design flexibility with the smallest footprint.

Comprehensive standard product portfolio
NXP Semiconductors is a one-stop-shop for your standard component external interfaces. You will find one of the most complete range of standard products and global support.

Compact and robust
If you want to save space with compact designs, choose our next-generation packaging. For example, our new chip-scale package (CSP) devices have an exceptionally compact footprint yet achieve a new benchmark in mechanical robustness.


MP3 players require energy efficient solutions, such as class D audio amplifiers and the latest interface components. NXP aims to simplify the design process for MP3 manufacturers by offering complete solutions with the smallest form factor.


Our digital audio amplifier family is built to simplify audio architecture by lowering the system cost and enabling easy interfacing. Using a digital interface eliminates the need for a D/A converter in the host processor, and the PDM or I2S format guarantees an ultra small IC footprint.

The digital interface assures low RF susceptibility in the device and the total system, and low sensitivity to input clock jitter. In addition, the digital interface eliminates the need for couple capacitors and safeguard speakers by eliminating problems coming from DC offsets due to leakage currents of an analog design. Read more ..

Charger interface

Whether your device is charged via the USB port or a separate charger, it is exposed to incorrect polarity or abnormally high voltages. Any of these two occurrences poses a threat to the charger circuit and the PMU of the mobile device. In addition, the USB/charger port can be subject to ESD strikes and other transient discharges.

NXP offers an application specific portfolio of TVS diodes and ESD arrays, which enable cost efficient protection solutions - ESD, reverse polarity, overvoltage, other transient discharges – with the smallest footprint.

Memory Card Interfaces

According the IEC61000-4-2 standard, SD host interfaces require additional high-level ESD protection, in addition to the integrated ESD protection which is typically very weak. Other strict EMI regulations and system requirements, as specified in GSM mobile phones, strongly request filters that reduce the radiated/conducted EMI. However, they must still comply with the electrical requirements of the interface specification.

The continuing trend of miniaturization of portable appliances implies that interface devices offering ESD protection and EMI filtering should also integrate biasing circuits/resistors into a single small-sized package. NXP’s memory card interface solutions fully support this continuing trend and offer interface conditioning functions such as high-level ESD protection according the IEC61000-4-2 standard.  They also support EMI filtering, integrated biasing resistor networks, regulated power supply to supply SD-memory cards directly from a battery, and voltage level translation to enable the use of low-voltage host processors to communicate with 2.7 V to 3.6 V compliant SD-memory card devices.

Diode & Transistors

Documentation for this application

File nameTitleTypeFormatDate
AN10911SD(HC)-memory card and MMC interface conditioning (1.0)Application notepdf2010-04-29
AN10910Protecting charger interfaces and typical battery charging topologies with external bypass transistors (1.0)Application notepdf2010-04-29
NXP_Mobile_UsageIntergrated discretes, interface conditioning and interface protection in mobile appliances (8.0)Brochurepdf2010-07-02
7501679830 dB EMI filter with up to 30 kV IEC contact ESD protection in leadless packages; NXP multi-channel ESD protection and EMI filter IP425xCZ8-4/CZ12-6/CZ16-8 IP4256CZ3-M/CZ5-W/CZ6-F (1.0)Leafletpdf2009-09-01
75017005TFA9881 - Digital PDM-input mono 3.4 W Class-D audio amplifier for portable applications (1.0)Leafletpdf2011-01-11
75017060TFA9882 - Digital I2S-input mono 3.4 W Class-D audio amplifier for portable applications (1.0)Leafletpdf2011-04-05
75016197A better Class-D amplifier for mobile and wired applications; NXP 3.0-W mono, filter-free, Class-D audio power amplifier SA58672UK (1.0)Leafletpdf2008-08-01
75016787SA58635 - 2x 25 mW Class-G stereo headphone driver with I2C-bus control (1.0)Leafletpdf2011-04-05
75016799Low-power, high-speed, dual-supply voltage translation (0.8 to 5.5 V) (1.0)Selection guidepdf2009-09-01
75017090Application guide; Portable devices and mobile handsets (3.0)Selection guidepdf2011-08-15
tn_analog_digital_switchesFeatures and applications of switches (1.0)Technical notepdf2009-04-15

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