Analog Devices Inc./Maxim Integrated Tariff Inquiry

MAX921CPA

MAX921CPA Description

The MAX921CPA is a high-performance comparator IC designed by Analog Devices Inc./Maxim Integrated, featuring a built-in voltage reference. This through-hole mounted IC is housed in an 8-pin DIP package, making it suitable for a variety of applications where precision and reliability are paramount. The MAX921CPA offers excellent common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR), both rated at 80dB, ensuring stable performance across varying operating conditions. It supports a wide supply voltage range of 2.5V to 11V for single supply and ±1.25V to ±5.5V for dual supply, making it versatile for different power configurations.

MAX921CPA Features

• High CMRR and PSRR: The MAX921CPA boasts a typical CMRR and PSRR of 80dB, which minimizes the impact of noise and power supply variations on the comparator's performance.
• Low Quiescent Current: With a maximum quiescent current of 5µA, the MAX921CPA is highly energy-efficient, making it suitable for low-power applications.
• High Output Current: The comparator can drive up to 50mA, allowing it to interface directly with various loads without additional buffering.
• Built-in Voltage Reference: The inclusion of a voltage reference simplifies circuit design and enhances precision in applications requiring accurate voltage comparisons.
• Wide Operating Temperature Range: The MAX921CPA operates reliably from 0°C to 70°C, making it suitable for a broad range of environmental conditions.
• Low Propagation Delay: With a maximum propagation delay of 12µs, the MAX921CPA ensures fast response times, crucial for time-sensitive applications.
• Moisture Sensitivity Level (MSL) 1: The MAX921CPA is classified as MSL 1, meaning it is not moisture-sensitive and can be stored and used without special handling precautions.

MAX921CPA Applications

The MAX921CPA is ideal for applications requiring precise voltage comparisons and stable performance. Its wide supply voltage range and low power consumption make it suitable for both battery-powered and mains-powered devices. Some specific use cases include:

• Battery Management Systems: The low quiescent current and wide voltage range make it ideal for monitoring battery levels in portable devices.
• Signal Processing: The high CMRR and PSRR ensure accurate signal processing in noisy environments, such as industrial control systems.
• Power Supply Monitoring: The built-in voltage reference and low propagation delay make it suitable for monitoring and controlling power supply voltages in power management systems.
• Automotive Applications: The wide operating temperature range and robust performance make it suitable for automotive applications where reliability and precision are critical.

Conclusion of MAX921CPA

The MAX921CPA is a versatile and high-performance comparator IC with a built-in voltage reference, offering excellent CMRR and PSRR, low quiescent current, and high output current. Its wide supply voltage range, low propagation delay, and robust performance make it suitable for a variety of applications, from battery management to industrial control systems. While the MAX921ACP is now obsolete, its legacy as a reliable and precise comparator continues to make it a valuable component in the electronics industry.