MAX994ESD-T

Current - Output (Typ):	--
Base Part Number:	MAX994
Supplier Device Package:	14-SOIC
Mounting Type:	Surface Mount
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C
Hysteresis:	±3mV
Propagation Delay (Max):	450ns
CMRR, PSRR (Typ):	80dB CMRR, 80dB PSRR
Current - Quiescent (Max):	24µA
Series:	--
Current - Input Bias (Max):	1pA @ 5.5V
Voltage - Input Offset (Max):	5mV @ 5.5V
Voltage - Supply, Single/Dual (±):	2.5 V ~ 5.5 V, ±1.25 V ~ 2.75 V
Output Type:	CMOS, Open-Drain, Rail-to-Rail, TTL
Number of Elements:	4
Type:	General Purpose
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

Linear - Comparators are widely used in various types of applications, such as temperature measurement, pressure sensing, and optical range sensing. They compare two signals, such as an analog and a digital signal, or two analog signals, to determine the difference between them. The MAX994ESD-T is a type of linear - comparator integrated circuit (IC) from Maxim Integrated, used for applications requiring high-input impedance, high precision, and high-speed performance. This article will discuss the application fields and working principle of the MAX994ESD-T.

Application Field

The MAX994ESD-T is designed for use in high-speed data acquisition systems and video/imaging systems. It provides high-accuracy and wide-power-supply applications. It is ideal for use in applications that require high input impedance, fast settling time, low power consumption, and low noise levels. Furthermore, the MAX994ESD-T is capable of solving the problems of level conversion and EMI/RFI filtering. It can also be used in industrial control systems and other applications where it is necessary to detect small signals in the presence of large signals, such as temperature measurement, motion sensing, and timing circuit applications. In addition, the device has a low operating current and high input impedance, making it well suited for battery-powered, low-power applications.

Working Principle

The MAX994ESD-T features two independent comparators, each with a separate power supply, a voltage reference, and an open-collector output. The reference voltage determines the comparison point. The output of the comparator is determined by the difference between the two input signals. If the input signal is higher than the reference voltage, the output will be high. Conversely, if the input is lower than the reference voltage, the output will be low.The MAX994ESD-T utilizes a fast amplification scheme to compare the input signals, which results in improved response times. Additionally, it features a power-on reset (POR) circuit to ensure that output is held in a low logic-state until the supply voltage reaches an acceptable level. The MAX994ESD-T also provides a high level of protection from static-discharge and electrical-overstress (EOS) conditions, thanks to its integration of advanced ESD protection circuitry. Moreover, the IC features a high noise immunity rate, which helps prevent erroneous state changes in the output due to external noise.

Conclusion

The MAX994ESD-T is a linear - comparator IC from Maxim Integrated, used for a variety of applications requiring high-speed performance and precision. It features two independent comparators, each with a separate power supply, a voltage reference, and an open-collector output. The device has a low operating current and high input impedance, which makes it well suited for battery-powered, low-power applications. It also features advanced static-discharge and EOS protection, as well as a high noise immunity rate. All these features make the MAX994ESD-T an ideal choice for a wide range of applications.

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