ADCMP392ARZ-RL7

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	General Purpose
Number of Elements:	2
Output Type:	Rail-to-Rail
Voltage - Supply, Single/Dual (±):	2.3 V ~ 5.5 V
Voltage - Input Offset (Max):	5mV
Current - Input Bias (Max):	30nA
Current - Output (Typ):	--
Current - Quiescent (Max):	29.3µA
CMRR, PSRR (Typ):	74dB CMRR, 80dB PSRR
Propagation Delay (Max):	9.7µs
Hysteresis:	4mV
Operating Temperature:	-40°C ~ 125°C
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Supplier Device Package:	8-SOIC
Base Part Number:	ADCMP392

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ADCMP392ARZ-RL7 Linear - Comparators

The ADCMP392ARZ-RL7 from Analog Devices (formally known as Linear Technology) is a dual, low-power, comparator with rail-to-rail outputs for use in applications such as low power DC motor control, temperature sensing and feedback, or any other application requiring a reliable output signal.

Application Fields

The ADCMP392AR has a wide range of application fields. Owing to its low power consumption and rail-to-rail outputs, it can be used in battery powered applications such as medical equipment, sensors and detectors, automotive electronic control units, portable instrumentation and communication systems. The flexibility of this device makes it ideal for signal conditioning, temperature monitoring and industrial automation applications.The device can be used in the control and automation of process equipment such as pumps, valves and sensors. As an example, a temperature monitoring system can use the ADCMP392AR as a comparator to compare the temperature with a set threshold and energize a relay to disengage the motor if the temperature exceeded the threshold. This application requires a highly reliable output signal which the device can provide.The device also finds application in digital logic circuits. Its rail-to-rail outputs can be used to translate low-level logic signals to the logic levels needed to control a higher power electronic device.

Working Principle

The ADCMP392ARZ-RL7 is a rail-to-rail comparator which means that its output signal can take on any voltage level between the power supply voltage and ground. The device compares two independent inputs, INA and INB, to determine whether one is greater, less than, or equal to the other.The device contains two independent current mirror circuits, one for each input. The current mirrors allow the inputs to be biased to any voltage level between the power supply and ground. This ensures the outputs remain within the specified operating range over a wide range of supply and temperature conditions.The device also contains hysteresis on the inputs which allows the inputs to be slightly different for a given output state without causing oscillations. The hysteresis can be adjusted by setting the view MICROSTEP bits and the PFMODE bit.

Conclusion

The ADCMP392ARZ-RL7 from Analog Devices is an ideal choice for applications requiring a highly reliable output signal such as temperature sensing and motor control. The device has a wide range of application fields including battery powered applications, signal conditioning, and digital logic circuits. The device contains two independent current mirrors and hysteresis on the inputs which ensure a stable and reliable output over a wide range of supply and temperature conditions.

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