MAX9022AKA+T

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	General Purpose
Number of Elements:	2
Output Type:	CMOS, Rail-to-Rail, TTL
Voltage - Supply, Single/Dual (±):	2.5 V ~ 5.5 V, ±1.25 V ~ 2.75 V
Voltage - Input Offset (Max):	1mV @ 5V
Current - Input Bias (Max):	0.003µA @ 5V
Current - Output (Typ):	--
Current - Quiescent (Max):	5µA
CMRR, PSRR (Typ):	100dB CMRR, 80dB PSRR
Propagation Delay (Max):	8µs
Hysteresis:	4mV
Operating Temperature:	-40°C ~ 125°C
Package / Case:	SOT-23-8
Mounting Type:	Surface Mount
Supplier Device Package:	SOT-23-8
Base Part Number:	MAX9022

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Linear - Comparators: MAX9022AKA+T application field and working principle

MAX9022AKA+T is a linear, micropower comparator which provides a broad range of precision low-budget solutions for many of today’s portable applications. The comparator features a fast response, low power consumption and wide operating voltage ranges. It can be used in a variety of applications including current monitoring and voltage level detection.

Application Field and Features

The MAX9022AKA+T is suitable for applications such as current monitoring and voltage level detection. It is ideally suited for low cost, low current, and small form factor designs.The MAX9022AKA+T is a single micropower comparator, capable of operating from 2.5 to 5.5V. It includes 6 adjustable hysteresis voltage settings which are independently adjustable for each of the low input and high input thresholds. The hysteresis voltage settings are relative to the voltage common reference point provided by the VREF pin. The hysteresis ensures low jitter and prevents oscillation due to resistor tolerances or slow slew rate on the input signal.The output of the MAX9022AKA+T is a standard TTL/CMOS compatible type with a logic high max output current of 10mA. The output can be disabled when low power consumption is a priority and can be driven up to 24V in undervoltage lockout (UVLO) mode.The MAX9022AKA+T is designed to provide precise operation in high temperature environments with a temperature range of -40°C to +125°C. The comparator also features an internal overvoltage protection system that allows the device to operate safely in high voltage environments.

Operating Principle

The MAX9022AKA+T works as a window comparator to compare its input terminals with two different thresholds. The upper threshold is set by the VT+ pin and the lower threshold is set by the VT- pin. The MAX9022AKA+T functions as an open-collector comparator. The underlying principle of operation is that the voltage between the two thresholds will control the output. When the voltage between the two thresholds is outside the preset range, the output will switch high. Conversely, when the voltage is inside the preset range, the output will switch low. The comparator has two adjustable thresholds. The upper threshold is adjustable via the VT+ pin and the lower threshold is adjustable via the VT- pin. The hysteresis settings are independently adjustable for each of the low input and high input thresholds. This allows for maximum accuracy and allows for precise measurement of the input signals. The hysteresis settings ensure low jitter and prevents oscillation due to resistor tolerances or slow slew rate on the input signal. The output is compatible with both TTL and CMOS logic and has an internal voltage clamping diode for enhanced protection against high voltage surges.

Conclusion

The MAX9022AKA+T is a linear, micropower comparator which provides a broad range of precision low-budget solutions for many of today’s portable applications. The MAX9022AKA+T features fast response, low power consumption, wide operating voltage ranges, adjustable hysteresis thresholds and a high temperature range. It provides precise operation in high temperature environments and can be used in a variety of applications including current monitoring and voltage level detection. Moreover, it has an internal overvoltage protection system and an output compatible with standard TTL/CMOS logic. The MAX9022AKA+T is an ideal choice for low cost, low current and small form factor designs offering precision, performance, and reliability in one package.

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