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MAX9031AUK+T

ADIMAX9031AUK+T

Analog Devices Inc./Maxim Integrated
Comparator Standard (General Purpose) Push-Pull, Rail-to-Rail SOT-23-5
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Overview

The MAX9031AUK+T is a single, low-cost comparator designed for low-power applications requiring a small footprint and high-speed operation. It features a rail-to-rail output and a wide input voltage range from -0.3V to VDD + 0.3V, operating from a single 2.5V to 5.5V supply. With a maximum propagation delay of 228ns and built-in 4mV hysteresis, it provides stable switching even in the presence of noisy input signals.

Why Choose This Part

The integrated 4mV hysteresis improves noise immunity and prevents multiple output transitions on slow-moving input signals. Its rail-to-rail push-pull output simplifies interfacing with digital logic and microcontrollers without the need for external pull-up resistors. High performance-to-size ratio is achieved through the 100dB CMRR and PSRR ratings within a compact SOT-23-5 package.

Applications

Battery-Powered Systems
Optimized for low-voltage operation down to 2.5V and low supply current requirements.
Threshold Detectors
Used in monitoring circuits where a specific voltage level must trigger a logic transition.
Zero-Crossing Detectors
Ideal for line-frequency detection or signal conditioning in power management.
Window Comparators
Combining multiple units to monitor if a signal stays within a specific voltage range.

Key Specifications

Type Standard (General Purpose)
Hysteresis 4mV
Output Type Push-Pull, Rail-to-Rail
Mounting Type Surface Mount
Package / Case SC-74A, SOT-753
CMRR, PSRR (Typ) 100dB CMRR, 100dB PSRR
Number of Elements 1
Operating Temperature -40degC ~ 125degC
Propagation Delay (Max) 228ns
Supplier Device Package SOT-23-5
Current - Quiescent (Max) 55uA
Current - Input Bias (Max) 0.008uA @ 5V
Voltage - Input Offset (Max) 1mV @ 5V
Voltage - Supply, Single/Dual (+/-) 2.5V ~ 5.5V

Getting Started

To integrate this part, ensure the supply decoupling capacitor (typically 0.1uF) is placed close to the VDD pin. For prototyping, the SOT-23-5 package requires a breakout board or a PCB footprint as it is not breadboard compatible. Testing can be performed by applying a reference voltage to one input and a variable signal to the other while monitoring the push-pull output on an oscilloscope.

Also Consider

MCP6541T-I/OT MCHPMicrochip Technology - Offers significantly lower power consumption for slower-speed applications where micro-power operation is critical.
TLV3201AIDCKR TITexas Instruments - Provides much faster propagation delay (40ns) for high-speed timing and data recovery applications.

Categories

Analog ICs > Comparators