The AD7403AN from Analog Devices Inc. is a high-performance, isolated sigma-delta modulator that converts an analog input signal into a high-speed, one-bit data stream with on-chip digital isolation. This product is based on Analog Devices' iCoupler® technology, which provides robust isolation between the input signal and the output digital interface, thereby protecting sensitive circuitry from high-voltage environments and noise.

This modulator operates over a wide analog input range and is suitable for a variety of industrial applications, including motor control, power quality monitoring, and industrial data acquisition systems. With its high level of integration, the AD7403AN simplifies design, reduces BOM costs, and offers enhanced system performance.

Key Features

• Isolation: Certified up to 5 kV RMS and 8.3 kV PK for 1 minute.
• Resolution: The modulator provides a 16-bit resolution at a data rate of up to 20 MHz.
• Signal Chain Integration: Integrates an analog-to-digital converter (ADC), a digital filter, and digital isolation in a single package.
• Operating Range: Wide operating temperature range from -40°C to +125°C, catering to harsh industrial environments.
• Interface: The serial interface is compatible with standard SPI, QSPI™, MICROWIRE™, and DSP interface standards.

Applications

• Industrial automation and process control
• Motor control and current sensing
• Power quality and energy monitoring
• Isolated data acquisition systems

The AD7403AN is available in a compact, surface-mount LGA package, which is optimal for space-constrained applications. Its high isolation capability, combined with a wide operating voltage range, ensures reliable and accurate data conversion in electrically noisy environments. With the AD7403AN, Analog Devices Inc. continues to deliver innovative solutions that advance the performance and reliability of industrial systems.