AD7401A Isolated Sigma-Delta Modulator from Analog Devices Inc.

The AD7401A is a high-performance, second-order, sigma-delta (Σ-Δ) modulator that converts an analog input signal into a high-speed, single-bit data stream. Produced by the renowned Analog Devices Inc., this modulator is part of a product line known for its precision and reliability in demanding industrial applications.

Key Features:

• High Isolation Voltage: With a reinforced isolation rating of up to 5 kV RMS, the AD7401A ensures safety and signal integrity in high-voltage applications.
• Wide Bandwidth: The device supports a signal bandwidth of up to 250 kHz, making it suitable for a variety of dynamic applications.
• High Oversampling Ratio (OSR): An OSR of 128 provides enhanced noise reduction and improved dynamic range.
• Integrated Digital Filter: The on-chip digital filter simplifies the design by reducing the need for external components.
• Robust Error Detection: Features such as cyclic redundancy check (CRC) and a shorted-input fail-safe ensure reliable operation even in harsh conditions.

Applications:

The AD7401A is ideally suited for a wide range of applications, including:

• Motor control feedback systems
• Power quality monitoring
• Industrial data acquisition systems
• Current sensing in power inverters

Technical Specifications:

For designers seeking an isolated analog-to-digital conversion solution with high accuracy and reliability, the AD7401A from Analog Devices Inc. is a compelling choice. It delivers high-performance data conversion in challenging environments where electrical isolation is paramount.