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Category: Audio Reference Designs

0.1-10Hz Amplifier Noise Measurement Filter Reference Design

This circuit is designed to amplify low frequency noise (0.1Hz to 10Hz) to a level that is easily measured by and oscilloscope. It achieves this function with a 0.1Hz second order high pass filter and a to 10Hz forth order low pass filter. The 0.1Hz to 10Hz noise measurement is a common figure of merit given in amplifier data sheets. This design is intended to facilitate the measurement 0.1Hz to…
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2.1 Class-D Digital Input Closed Loop Audio Amplifier System with Signal Processing Reference Design

This 2.1 Audio Amplifier solution is designed for applications requiring 10 watts or less output power where the addition of a mono subwoofer can enhance the sound quality of stereo audio systems. A stereo TAS5756M Class-D IC amplifier is implemented for the left and right audio channels and a TAS5760M Class-D amplifier provides a mono bass channel. Biquad filters: dynamic bass enhancement and…
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40 V to 400 V Uni-directional Current/Voltage/Power Monitoring Reference Design

This verified design can accurately measure current: voltage and power on a bus as high as 400 V using an I2C- or SMBUS-compatible interface. This design is targeted towards industrial applications where there is a need to measure system current accurately with bus voltages greater than 40 Volts such as Solar inverters: HEV/EV systems and Source generation for AC/DC electronic loads and power…
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66AK2G02 DSP + ARM Processor Audio Processing Reference Design

The TIDEP0069 TI Reference Design is a reference platform based on the 66AK2G02 DSP + ARM processor  System-On-Chip (SoC) and companion AIC3106 Audio codec and enables a quick path to audio processing algorithm design and demonstration. This audio solution design includes real time application software using the Processor SDK TI RTOS software that demonstrates audio processing block on the DSP to…
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A High-Fidelity Headphone Amplifier for Current Output Audio DACs Reference Design

This TI Precision Verified Design circuit converts the differential current output of audio DACs to a single-ended voltage capable of driving low impedance headphones. This design is capable of meeting the high-fidelity performance levels currently being popularized in cell phones and portable audio players.
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Active Volume Control for Professional Audio

This TI Verified Design implements a split-supply: high-performance volume control which attenuates a professional line-level audio signal with minimal distortion and noise. An input buffer preserves the behavior of the system independent of the audio input source impedance. A radio frequency (RF) filter on the circuit front end removes noise from outside the audio band: while a bidirectional…
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Analog: Active Crossover Circuit for Two-Way Loudspeakers

This TI Verified Design implements an analog active crossover solution for two-way loudspeakers which is suitable for recording studios or home high-fidelity systems. The woofer signal pathway includes a low-pass shelving circuit for baffle step compensation and a 4th-order Linkwitz-Riley low-pass filter. The tweeter signal pathway includes a 4th-order Linkwitz-Riley high-pass filter: 3rd-order…
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Audio Boom Box/Portable Speaker Reference Design with Efficient Boost Converter.

PMP9491 is a 30W highly efficient and compact Portable Speaker/Audio Boom Box reference Design which can be used in 15W +15W Stereo or 30W Woofer Applications. The Power Source for the Design is 1 or 2 Li ion in Series . The design is broadly divided into three main stages:Highly efficient Single-Phase Non Synchronous Boost Converter using the LM3481 controller IC.  The design accepts an input…
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Audio Preprocessing System Reference Design for Voice-Based Applications Using 66AK2G02

This reference design uses multiple microphones: a beamforming algorithm: and other processes to extract clear speech and audio amidst noise and other clutter.  The rapid increase in applications that are used in noise-prone environments for voice activated digital assitants creates demand for systems that extract clear voice from noisy environments.  The TIDEP-0088 reference design uses a…
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Audio Preprocessing System Reference Design for Voice-Based Applications Using C6747

This reference design uses multiple microphones: a beamforming algorithm: and other processes to extract clear speech and audio amidst noise and other clutter.  The rapid increase in applications that are used in noise-prone environments for voice activated digital assistants creates demand for systems that extract clear voice from noisy environments.  The TIDEP-0099 reference design uses a…
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Automotive 2-MHz Class-D: 4-Channel: 21-W Audio Amplifier in Class AB Form-Factor Reference Design

The TIDA-00743 reference design is a small module designed for evaluation of a digital-input class-D audio amplifier in a system which has been designed for a typical class AB audio power amplifier module. This design demonstrates the reduction in power dissipation that a class D amplifier provides. This design demonstrates how 2.1 MHz operation of a TAS6424-Q1 enables a compact power amplifier…
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Automotive 4-Channel Class D Amplifier Reference Design for Head Unit

The TIDA-00573 reference design provides a Class D based amplifier solution that allows it to be evaluated in the form factor of a typical Class AB amplifier.  The design is optimized to mitigate thermals associated with audio amplifiers and to minimize switching noises associated with Class D amplifiers.  This design is comprised of two parts.  The 1st highlights the audio amplifier module…
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Automotive Audio I2S over Coax Class D Amplifier Reference Design

This reference design is an I²S/TDM-based: low-cost: easy-to-use alternative to fiber optics/analog copper wire for connecting an automotive (sound) control panel to an output stage/power amplifier. Supporting I²S as well as TDM: it is capable of transmitting digital audio signal to 16 independent channels of speakers with each channel output of 80W at 4Ω. It also supports bidirectional…
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Automotive Cluster Chime Reference Design

This TI reference design is a 3.1-W mono fully differential audio power amplifier driving a chime and is one part of an automotive cluster system solution optimized for the mid-end cluster market. The entire cluster solution supports 4.5-40V system capabilities that can withstand cold crank: start stop: and load dump conditions.
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Automotive eCall Reference Design

TIDA-00159 is a reference design for vehicles equipped with eCall systems which has the capability to enable phone calls to an emergency service center in the event of an accident. Customers can accelerate the design of their eCall systems by taking advantage of a complete reference design comprised of analog AEC-Q100 qualified integrated circuits (ICs) from TI. This design creates a robust: low…
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Automotive Emergency Call (eCall) Audio Subsystem Reference Design

The efficiency and diagnostics necessary for automotive emergency call (eCall) systems generate unique requirements for the audio subsystem: such as speaker diagnostics: and low power consumption.  This TI Design shows how to use TI's automotive two-channel audio codec (TLV320AIC3104-Q1) and a class-D audio amplifier (TAS5411-Q1) for eCall applications.
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Bluetooth and MSP430 Audio Sink Reference Design

TI's Bluetooth + MSP430 Audio sink reference design can be used by customers to create a variety of applications for low end: low power audio solutions. Some application possibilities - toys: low end bluetooth speakers: audio streaming accessories. This reference design is a cost effective audio implementation and with full design files provided allows you to focus your efforts on application and…
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Buck (-15V@1A) for Audio Applications

This efficient: low cost boost converter provides a positive 15V@1A output from a 5V input. The large output capacitance make this suitable for applications with a large transient load: such as audio.
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Capacitive Touchscreen Display Reference Design

Capacitive touchscreen displays generally provide a higher quality and better user experience than traditional resistive touchscreen displays. This reference design shows how to interface a capacitive touchscreen display to the Sitara AM437x processors. The display has an integrated touchscreen controller that interfaces with the AM437x via its I2C port. 
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DEVPACK-LED-AUDIO

The LED Audio DevPack enables Industrial IoT lighting applications. Plug it into the SensorTag DevPack expansion header and expand your design with four high-power LEDs from Osram. The LED Audio DevPack makes it easy to create LED lighting applications controlled from a mobile phone with the Bluetooth Smart SensorTag or connect to ZigBee lighting system using ZigBee.
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