Designing, building and testing a class D audio amplifier circuit and a wireless transmitter can mean added costs and wasted time in your product development.
Fortunately, Texas Instruments (TI) has released a Wireless Audio Solution to cut down development time and get products to market faster. TI's Wireless Audio is ideal for sports, fitness, toys or home entertainment systems. In this post I'll review the technologies you will need to add wireless audio to your design.
For more ideas and implementation questions, check out the Applications page.
The high efficiency of theTPA3130D2 allows for 2x15W without external heat sink on a single layer PCB. Advanced oscillator/PLL and multiple switching frequencies add AM avoidance and an M/S option for synchronizing numerous devices. The efficient class-D operation produces greater than 90% power efficiency. Combined with a low idle loss, the heat sink size can be reduced.
TPA3130D2 – Stereo Amplifier (15W Filter-Free, Class D, AM Avoidance)
- short circuit protection
- thermal protection
- over-voltage protection
- under-voltage protection
- DC fault protection
The fault signals are monitored by the processer to ensure that everything runs smoothly. This makes the TPA3130D2 a great audio amplifier to add to your project.
Additionally, you can use the TPA3130D2 Evaluation Module to quickly evaluate the sound quality and verify specifications for your application.
CC2564 – Bluetooth Controller (smart ready)
CC2564 is a single chip Bluetooth solution. It integrates Basic Rate (BR)/Enhanced Data Rate (EDR) and Low Energy (LE). Additionally, it is fully compliant with Bluetooth 4.1 (up to the HCI layer).
Best-in-Class Bluetooth (RF) Performance provides longer ranges up to 2x other Bluetooth Low Energy only solutions. Furthermore, advanced power management will increases the battery life and ease of design.
Finally, there is a PC-Based hardware evaluation kit for the RF Performance. This makes it well suited for mobile phone accessories or sports and fitness applications.
I suspect that this little beauty might increase your sales thanks to the wireless charging and built in Foreign Object Detection (FOD). Additionally, the thermal shutdown will ensure safety and ease of implementation.
It can be used with mobile and hand-held devices as well as headsets and digital cameras.
The PCM3070 features two fully-programmable miniDSP cores that support application-specific algorithms in the record and/or the playback path of the device. The miniDSP cores are fully software controlled. The PCM3070 includes post-processing algorithms:
- Speaker EQ
- Dynamic Range Controls
- Intelligent volume controls
- Crossovers
It's the right choice for flat panel TVs, docking stations and other stereo or 2.1 home audio systems.
TMS320C5535 – Fixed-Point Digital Signal Processor (low power)
The fixed-point DSP is based on the TMS320C55x DSP generation CPU processor core delivering high performance and low power consumption through high parallelism and focus on power saving. The low-power consumption and small package of the C5535 DSP enables portable audio devices and voice recognition applications.
The CPU supports an internal bus structure that is composed of:
- A program bus
- A 32-bit read bus
- Additional buses dedicated to DMA & peripherals
These buses provide the ability to perform up to four 16-bit data reads and two 16-bit data writes in a single cycle. The C5535 also includes a tightly-coupled 1024-point FFT hardware acceleration to reduce power consumption.
Total Package
This is the total package for your wireless audio needs. Why spend months trying to add even half of this to your design when you can start with all of these features and more?
Texas Instruments has sponsored promotion of their industrial communications solutions on ENGINEERING.com. They have no editorial input to this post - all opinions are mine. Christine Halsey