The AD7401BR from Analog Devices Inc. is a high-performance, second-order sigma-delta modulator that converts an analog input signal into a high-speed, one-bit data stream. This isolated modulator features Analog Devices' patented iCoupler technology, providing electrical isolation between the input signal and the output interface. This product is particularly well-suited for applications requiring high insulation voltage, low leakage, and robust noise immunity.

Key Features

• Isolation: The AD7401BR offers a high level of isolation (up to 5 kV RMS) which is critical for safety in industrial applications and ensures reliable operation in electrically noisy environments.
• High Resolution: With its sigma-delta architecture, the device provides a high-resolution output, making it ideal for precision measurement applications.
• Wide Bandwidth: The modulator supports a wide signal bandwidth, which allows for accurate representation of the input signal and is suitable for dynamic applications.
• Robust Noise Performance: Thanks to the integrated isolation technology, the AD7401BR is highly immune to common-mode noise, ensuring signal integrity.
• Serial Interface: The device features a serial peripheral interface (SPI), which simplifies connection to microprocessors and DSPs, making system integration easier.
• Compact Package: The AD7401BR comes in a compact 16-lead SOIC package, which is optimal for space-constrained applications.

Applications

The AD7401BR is versatile and can be employed in a variety of applications, including but not limited to:

• Industrial process controls
• Data acquisition systems
• Motor control feedback systems
• Isolated sensor interfaces
• Power supply monitoring

In conclusion, the AD7401BR isolated sigma-delta modulator offers a blend of performance, isolation, and ease of use that makes it an excellent choice for designers seeking to enhance the safety, accuracy, and reliability of their systems.