Description

The MAX990ESA+ is a single micropower comparator that belongs to the MAX985/MAX986/MAX989/MAX990/MAX993/MAX994 family of linear comparators. These comparators are designed to feature low-voltage operation and rail-to-rail inputs and outputs, which make them suitable for both 3V and 5V systems. They can also operate with ±1.25V to ±2.75V dual supplies. The MAX990ESA+ is ideal for use in portable or battery-powered systems, mobile communications, zero-crossing detectors, and other digital line receivers and applications. It has a quiescent supply current of 11µA and a 300ns propagation delay.

Specifications and features

• Low-voltage operation and rail-to-rail inputs and outputs
• Operating voltages range from 2.5V to 5.5V
• ±1.25V to ±2.75V dual supplies
• Quiescent supply current: 11µA
• 300ns propagation delay
• Push-pull output stage sinks and sources 8mA current (MAX985/MAX989/MAX993)
• Open-drain output voltage extends beyond VCC (MAX986/MAX990/MAX994)
• Unique output stage reduces output switching current, minimizing overall power consumption
• 80µA supply current at 1MHz switching frequency
• No phase reversal for overdriven inputs

Application Scenarios

The MAX990ESA+ is ideal for use in a wide range of battery-powered systems and mobile devices. It can be used as a zero-crossing detector, a window comparator, a level translator, a threshold detector/discriminator, a ground/supply-sensing application, and an IR receiver, among other digital line receivers and applications.

Comparison

• Low-voltage operation and rail-to-rail inputs and outputs
• Consumes only 11µA of supply current
• Unique output stage reduces output switching current, minimizing overall power consumption
• No phase reversal for overdriven inputs

• Single micropower comparator