MAX933CUA+T

Current - Output (Typ):	0.015mA @ 5V
Base Part Number:	MAX933
Supplier Device Package:	8-uMAX
Mounting Type:	Surface Mount
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Operating Temperature:	0°C ~ 70°C
Hysteresis:	50mV
Propagation Delay (Max):	12µs
CMRR, PSRR (Typ):	80dB CMRR, 80dB PSRR
Current - Quiescent (Max):	6µA
Series:	--
Current - Input Bias (Max):	--
Voltage - Input Offset (Max):	10mV @ 5V
Voltage - Supply, Single/Dual (±):	2.5 V ~ 11 V, ±1.25 V ~ 5.5 V
Output Type:	CMOS, TTL
Number of Elements:	2
Type:	with Voltage Reference
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The MAX933CUA+T is a monolithic CMOS linear comparator designed for very low power applications in the automotive, industrial, telecommunications, and medical industries. This comparator incorporates a precision voltage reference and a Schmitt-trigger output that eliminates the need for an additional voltage-clamp circuit. With its low quiescent current and fast start-up time, this device is ideal for low-current loop-back applications.

Application Field

The MAX933CUA+T is especially suitable for applications such as motor control, air bag deployment, speed/duty cycle control, current limiting, and analog-to-digital converter protection. It is also suitable for monitoring temperature, force, or current in non-isolated loop-back applications. The MAX933CUA+T is also an excellent choice for situations where the load device requires a clean open-collector output with fast rise and fall times.

Working Principle

The MAX933CUA+T operates on a simple principle. It compares an input voltage to a predetermined reference voltage. When the input voltage exceeds the predetermined reference voltage, the comparator produces a logic high output. If the input voltage is below the reference voltage, the comparator produces a logic low output. This simple logic can be used to interpret analog signals and can be used in many applications such as motor speed control, air bag deployment, temperature sensing, and analog-to-digital conversion.

Features

The MAX933CUA+T provides several features that make it an ideal choice for low power linear applications. Its low quiescent current of only 4 μA allows for low power operation and significantly reduces power consumption. The MAX933CUA+T also features a Schmitt-trigger output that eliminates the need for an additional voltage-clamp circuit. The high open-collector output drive of 24mA ensures fast switching of the necessary loads. The MAX933CUA+T provides additional protection with its ESD protection of 25 kV Human Body Model and its over-temperature protection of 150°C. It is also RoHS compliant, making it an ideal choice for most applications.

Conclusion

The MAX933CUA+T is an ideal choice for low power linear applications such as motor control, air bag deployment, speed/duty cycle control, current limiting, and analog-to-digital converter protection. Its low quiescent current and fast start-up time make it well suited for loop-back applications. The device also features a Schmitt-trigger output and a high open-collector output drive that eliminates the need for an additional voltage-clamp circuit. Furthermore, the robust ESD protection and RoHS compliance make the MAX933CUA+T an excellent choice for designers looking for a low power, cost-effective and reliable device for their application.

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