STEVAL-MKI139V5

Series:	--
Part Status:	Active
Type:	Audio
Function:	MEMS Omnidirectional Microphones
Embedded:	No
Utilized IC / Part:	MP23AB01DH
Primary Attributes:	--
Supplied Contents:	Board(s)
Secondary Attributes:	--

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Introduction

The STEVAL-MKI139V5 is an evaluation board and kit, designed to evaluate and demonstrate the features and performance of STMicroelectronics\' high-performance analog and digital signal conversion products. The evaluation board includes a 24-bit analog-to-digital converter (ADC) chip, a 12-bit/16-bit digital-to-analog converter (DAC) chip, and a microcontroller (μC) for communication and programming. The board offers a platform for users to evaluate the capabilities and/or performance of STMicroelectronics\' signal conversion products.

Applications

The STEVAL-MKI139V5 is ideal for applications in the fields of instrumentation and automation involving audio and data acquisition, power measurement, healthcare, and industrial sensing and control. It can be used in analog-to-digital and digital-to-analog signal conversion for data acquisition, control systems, audio signal processing, streaming and remote data acquisition, and other applications that require high-performanceADC and DAC solutions.

Features

The STEVAL-MKI139V5 features an integrated microcontroller, serial peripheral interface (SPI)/Quad SPI, I2C interface, parallel port, and digital-to-analog converter (DAC). The microcontroller supports a high-speed communication protocol, up to 10 MHz SPI, and I2C communication at speeds up to 400 kHz. The evaluation board also features an expansion board extension connector, three input voltage ranges, and a buffered output voltage range. The board includes a gain switch, disconnectable discharge switch, and circuit protection. The board includes a burst DAC for testing the ADCs, a general-purpose timer/counter, and various LEDs to indicate reset and power status.

Functional Blocks

The STEVAL-MKI139V5 evaluation board consists of several functional blocks:

• Microcontroller (µC): The microcontroller is a 32-bit ARM Cortex-M0+ microcontroller which provides the interface between the external components and the board. It is responsible for downloading programs to the evaluation board and performing data conversion.
• ADC: The 24-bit ADC provides an on-chip buffered analog signal input range from 0 to 3.3 V. Its resolution is 24 bits with a sampling rate of up to 12 MSPS. It also provides four single-ended or two differential channels with an on-chip reference and internal clock source.
• DAC: The integrated 12-bit/16-bit DAC provides an on-chip output range from 0 V to 6.5 V. The resolution is 12 bits (for DC) and 16 bits (for streaming). The DAC also includes an output buffer for connection to external loads.
• Expansion board: The expansion board contains several connectors, the input voltage range switch, the disconnectable discharge switch, power-related LEDs, and the circuit protection. It also provides prototyping space for custom circuits and applications.

Working Principle

The STEVAL-MKI139V5 evaluation board is used to evaluate the features and performance of STMicroelectronics\' analog-to-digital and digital-to-analog signal conversion products. It consists of a microcontroller (μC), ADC, DAC, and expansion board to provide the user with a platform for testing these components.The microcontroller is responsible for downloading programs from an external device (such as a PC or a smartphone) to the evaluation board and controlling the data conversion. The ADC on the evaluation board is a 24-bit resolution ADC with a sampling rate of up to 12 MSPS. It has four single-ended or two differential input channels and an on-chip buffered analog signal input range from 0 to 3.3 V. The DAC on the evaluation board is a 12-bit/16-bit resolution DAC with an output range from 0 V to 6.5 V. It includes an output buffer for connection to external loads.The expansion board contains several connectors, the input voltage range switch, the disconnectable discharge switch, power-related LEDs, and the circuit protection. The user can also use this board to prototype custom circuits and applications. The evaluation board also includes a gain switch, a general-purpose timer/counter, and various LEDs to indicate reset and power status. The board is ideal for applications in the fields of instrumentation and automation involving audio and data acquisition, power measurement, healthcare, and industrial sensing and control.

Conclusion

The STEVAL-MKI139V5 evaluation board and kit offers users a platform to evaluate STMicroelectronics’ analog-to-digital and digital-to-analog signal conversion products. The features of the evaluation board include an integrated microcontroller, serial peripheral interface (SPI)/Quad SPI, I2C interface, parallel port, and digital-to-analog converter (DAC). The board can be used for data acquisition, control systems, audio signal processing, streaming and remote data acquisition, and other applications that require high-performance ADC and DAC solutions.

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