EUA2123 20-W Stereo Class-D Audio Power Amplifier

This application note describes the evaluation board for the AD7892-2, a 12-bit analog-to-digital (A/D) converter. The AD7892-2 is a high-speed, low-power device capable of 500 ksps sampling rate, operating from a single +5V supply. It features an on-chip track/hold amplifier, an internal +2.5V reference, and versatile interface structures allowing both serial and parallel connections to microprocessors. This flexible serial interface enables direct connections to digital signal processors such as ADSP-2101 and TMS320C25, as well as microcontrollers like 8XC51 and 68HC11. Comprehensive data on the AD7892-2 is available in the AD7892 data sheet from Analog Devices, which should be referenced alongside this application note when utilizing the evaluation board. On-board components include an AD780, a pin-programmable +2.5V or +3V ultra-high precision bandgap reference, and an input buffer amplifier to buffer the analog input.

The AD7892-2 evaluation board serves as an essential tool for assessing the performance of the AD7892-2 A/D converter in various applications. The board is designed to facilitate easy interfacing with microprocessors and microcontrollers, making it suitable for a wide range of digital signal processing tasks. The high-speed operation of 500 ksps allows for rapid data acquisition, which is critical in applications requiring real-time processing.

The incorporation of an on-chip track/hold amplifier enhances the accuracy of the A/D conversion by ensuring that the input signal is stable during the conversion process. The internal +2.5V reference voltage is crucial for achieving precise measurements, while the option to configure the AD780 reference to either +2.5V or +3V provides flexibility for different operational requirements.

The evaluation board is equipped with various connection options to accommodate both serial and parallel communication protocols. This versatility is particularly beneficial for integration with a range of digital signal processors and microcontrollers, enabling developers to leverage the capabilities of the AD7892-2 in diverse applications, from industrial automation to consumer electronics.

In summary, the AD7892-2 evaluation board is a comprehensive platform for evaluating the performance of the AD7892-2 A/D converter, featuring high-speed operation, a robust reference design, and flexible interfacing options, making it an invaluable resource for engineers and developers in the field of electronic design.This Application Note describes the evaluation board for the AD7892-2 12-Bit A/D converter The AD7892-2 is a high speed, low power, 500ksps successive approximation ADC which operates from a single +5V supply. It incorporates an on chip track/hold Amplifier an internal +2. 5V reference and on- chip versatile Interface structures that allow both ser ial and parallel connection to a Microprocessor This flexible serial Interface allows the AD7892-2 to connect directly to Digital Signal Processors ADSP-2101 TMS320C25 etc. ) and Microcontrollers (8XC51, 68HC11, etc. ). Full data on the AD7892-2 is available in the AD7892 data sheet available from Analog Devices and should be consulted in conjunction with this Application Note when using the Evaluation Board.

On-board components include an AD780 which is a pin programmable +2. 5 V or +3V ultra high precision bandgap reference and an input Buffer Amplifier to Buffer the Analog input. 🔗 External reference