LM2901AVQDRG4Q1

Current - Output (Typ):	20mA
Base Part Number:	LM2901
Supplier Device Package:	14-SOIC
Mounting Type:	Surface Mount
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 125°C
Hysteresis:	--
Propagation Delay (Max):	--
CMRR, PSRR (Typ):	--
Current - Quiescent (Max):	2.5mA
Series:	Automotive, AEC-Q100
Current - Input Bias (Max):	0.25µA @ 5V
Voltage - Input Offset (Max):	2mV @ 5V
Voltage - Supply, Single/Dual (±):	2 V ~ 36 V, ±1 V ~ 18 V
Output Type:	CMOS, MOS, Open-Collector, TTL
Number of Elements:	4
Type:	Differential
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The LM2901AVQDRG4Q1is a linear-comparator integrated circuit (IC) designed for use in low-power, digital, analog and mixed-signal circuits to compare two voltage levels and transmit the result to digital logic. This device consists of an op-amp and hysteresis amplifier circuitry, making it an ideal solution for precision voltage detection, such as in thermal control or audio systems. The following will discuss the LM2901AVQDRG4Q1 application field and working principle.

Application Field

The LM2901AVQDRG4Q1 is a versatile linear-comparator IC that can be used in many applications. It has low power consumption and extremely high accuracy, allowing it to replace analogue comparators in several applications, such as a temperature sensor, over/under voltage detection, audio detection and many others. Due to the low power consumption of the LM2901AVQDRG4Q1, it can also be used in portable devices where the power consumption needs to be kept low but accuracy is still important.In addition, the LM2901AVQDRG4Q1 also offers a wide range of features that make it ideal for many digital and mixed-signal circuits. It has an operating voltage range of 2V to 15V, an input voltage range of 0 to 16V, and an operating temperature range from -40°C to 85°C. It can also be used in applications with high noise or high input impedance, and it features hysteresis for noise rejection and false triggers.

Working Principle

The LM2901AVQDRG4Q1 consists of an op-amp and hysteresis amplifier circuitry to compare two voltage levels and transmit the result to digital logic. The voltage comparator is made up of two amplifiers, a differential amplifier and an output amplifier, which are connected in series.When two different input voltages are applied to the differential amplifier, an offset voltage is created between the op-amp outputs and the output amplifier. This offset voltage is compared to a reference voltage to determine whether the input voltages are equal or different.If the difference between the input voltages is greater than the reference voltage, then the offset voltage will be more positive than the reference voltage, and the output amplifier will assert a “1”. Similarly, if the difference between the input voltages is less than the reference voltage, then the offset voltage will be more negative than the reference voltage, and the output amplifier will output a “0”.

Conclusion

The LM2901AVQDRG4Q1 is an ideal device for precision voltage detection applications, due to its low power consumption, wide operating temperature range and noise rejection. It can be used for a wide range of applications, such as temperature sensing, over/under voltage detection, audio detection, and many others. In addition, the device’s working principle of comparing two voltages and transmitting the result to digital logic is also simple and easy to understand.

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