MAX22707AUB+T

Overview

The MAX22707AUB+T is a low-power, precision zero crossing detector manufactured by Analog Devices. It operates on a single supply voltage ranging from 3.0V to 5.5V. The device features integrated fourth-order low-pass (LPF) and band-pass (BPF) filters based on switched-capacitor technology. It supports input frequencies of 50Hz, 60Hz, 100Hz, and 120Hz. Zero crossing time delay varies between -200µs and +9.2ms depending on configuration. Supply current is typically 1.0mA when enabled and 2.0µA in standby. The component is housed in a 10-pin µMAX package measuring 3mm x 3mm.

Feature Summary

• Integrated fourth-order analog filtering using switched-capacitor technology for noise reduction
• Configurable filter modes including low-pass and band-pass options
• Support for multiple AC line frequencies and rectified input signals
• Low power consumption with programmable standby mode

Applications

• Industrial lighting dimming systems
• AC phase detection circuits
• Flexible zero crossing detection applications

Procurement Notes

Verify the specific ordering suffix '+T' indicates tape-and-reel packaging upon purchase. Confirm that the 'A' designation corresponds to the extended temperature range of -40°C to +125°C. Ensure compatibility with the 10-pin µMAX footprint during procurement planning.

Selection Notes

Select this component when precise zero crossing detection is required with minimal external filtering components. Consider the LPF or BPF mode based on the specific input signal characteristics and frequency requirements. Evaluate the power budget as the device offers distinct active and standby current levels.

Part Context

This part belongs to the MAX22707 family of precision zero crossing detectors. It utilizes BiCMOS process technology to achieve high accuracy and stability. The device is designed to replace discrete solutions involving multiple amplifiers and comparators, thereby reducing PCB space and bill of materials cost.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.