Intelligent digital voltmeter circuit HI7159A and 8031

An intelligent digital voltmeter circuit utilizing the HI7159A, 8031 microcontroller, and various other components as illustrated in the figure. The internal circuit incorporates a successive cumulative integrator, digital zero function, low noise BIMOS technology, and other advanced features. In 5 1/2 bit mode, the maximum count value is 199999, with an accuracy of 0.005%.

The intelligent digital voltmeter circuit is designed to provide precise voltage measurements with high accuracy. The core component, the HI7159A, is a specialized analog-to-digital converter (ADC) that enables the conversion of analog voltage signals into digital format. This ADC operates in conjunction with the 8031 microcontroller, which manages the processing and display of the measured values.

The circuit employs a successive cumulative integrator, which enhances the measurement resolution by integrating the input voltage over time. This method allows for the accumulation of voltage readings, resulting in a more stable and accurate output. The digital zero function is integrated into the design to eliminate any offset errors that may arise from the measurement system, ensuring that the voltmeter can accurately display zero volts when no input signal is present.

Low noise BIMOS technology is utilized in the circuit to reduce interference and improve the overall signal-to-noise ratio. This is particularly important in applications where high precision is required, as it minimizes the impact of extraneous signals on the measurement accuracy.

The design supports a 5 1/2 bit mode, which allows for a maximum count value of 199999. This high count value indicates the ability of the voltmeter to measure voltages with great detail, making it suitable for various applications, including laboratory measurements, industrial monitoring, and educational purposes. The stated accuracy of 0.005% further underscores the reliability of the instrument, making it a valuable tool for engineers and technicians in the field of electronics.Intelligent digital voltmeter circuit by the HI7159A 8031 and other components as shown in FIG. The internal circuit with successive cumulative integrator, digital zero, low noise BIMOS other advanced technologies. In 5 1/2 bit mode of the maximum count value is 199999, accuracy of 0.005%.