AudioAMP 8 Click Board™

Product Code: MIKROE-4812

How Does The AudioAmp 8 Click Board™ Work? The AudioAmp 8 Click Board™ is based on the the MA12070, a super-efficient audio power amplifier based on proprietary multi-level switching technology that enables low power loss during operation from Infineon Technologies. The MA12070 is equipped with an intelligent power management algorithm that applies automatic power mode selection during audio playback. In this state, the amplifier will seamlessly transition between three different power modes depending on the audio level to achieve optimal power loss, audio performance, and EMI. Alternatively, it is also possible to manually select the desired power mode for the MA12070 via a serial interface. The MA12070 communicates with MCU using the standard I2C 2-Wire interface that supports Standard (100 kHz) and Fast (400 kHz) modes of operation. It has a 7-bit slave address with the first five MSBs fixed to 01000. The address pins are programmed by the user and determine the value of the last two LSBs of the slave address, which can be selected by positioning onboard SMD jumpers labelled as ADDR SEL to an appropriate position marked as 0 or 1.

The AudioAmp 8 Click Board™ supports an external power supply for the motor, which can be connected to the input terminal labelled as VIN and should be within the range of 6V to 26V, while the input audio can be brought to the input jack labelled as AUDIO IN and after specific processing reproduced on the speakers of the desired channel SPK OUT. The MA12070 is highly flexible regarding the configuration of the four power amplifier channels. It can be set to four different output configurations by setting the configuration pins MS0 and MS1, routed to the INT and PWM pins of the mikroBUS™ socket. In addition to these pins, this Click board™ uses a few more pins of the mikroBUS™ socket. The Enable pin, labelled as EN and routed to the CS pin of the mikroBUS™ socket, optimizes power consumption used for power ON/OFF purposes, while the MUT pin routed to the RST pin allows users to mute audio on connected speakers. Besides, it is possible to detect operational irregularities, such as overcurrent and short-circuit detection. An indication of such a condition is performed using the red LED indicator labelled as ERROR, alongside an audio clipping indication accomplished using the blue LED indicator labelled as CLIP which indicates when audio output is close to clipping. The AudioAmp 8 Click Board™ can be operated only with a 5V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development. SPECIFICATIONS Type Amplifier Applications Can be used for various types of consumer audio equipment applications On-board modules MA12070 - super-efficient audio power amplifier from Infineon Technologies Key Features Proprietary multi-level switching technology, high power efficiency, high audio performance, low power consumption, flexible output stage configuration, protection feature, and more Interface I2C Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 5V,External PINOUT DIAGRAM This table shows how the pinout of the AudioAmp 8 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes NC 1 AN PWM 16 MS0 Output Stage Config. 0 Audio Mute MUT 2 RST INT 15 MS1 Output Stage Config. 1 Device Enable EN 3 CS RX 14 NC NC 4 SCK TX 13 NC NC 5 MISO SCL 12 SCL I2C Clock NC 6 MOSI SDA 11 SDA I2C Data NC 7 3.3V 5V 10 5V Power Supply Ground GND 8 GND GND 9 GND