HMC974LC3CTR-R5

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Window
Number of Elements:	1
Output Type:	--
Voltage - Supply, Single/Dual (±):	3.3V
Voltage - Input Offset (Max):	10mV @ 3.3V
Current - Input Bias (Max):	30µA @ 3.3V
Current - Output (Typ):	40mA
Current - Quiescent (Max):	79.6mA
CMRR, PSRR (Typ):	--
Propagation Delay (Max):	0.088ns
Hysteresis:	--
Operating Temperature:	-40°C ~ 85°C
Package / Case:	16-LFQFN Exposed Pad
Mounting Type:	Surface Mount
Supplier Device Package:	16-SMT (3x3)
Base Part Number:	HMC974

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Linear ComparatorsThe HMC974LC3CTR-R5 is a linear-comparator which is used in various field appl ications. A comparator is a type of linear analog electrical circuit that functions as a “switch” when the input signals exceed the pre-configured threshold value. Comparators are typically used in applications such as analog voltage control and monitoring, closed-loop current-sensing, and other pulse-width modulation (PWM) techniques.The HMC974LC3CTR-R5 linear-comparator features an open-collector output with a maximum of 360 mV drive voltage. It operates with a typical supply current of 2.5mA, a maximum operating voltage of 6V and a power-on reset (POR) for better power management. It has a propagation delay time of 5.2us, and operates from -40 to +85 Celsius. This linear device can be used in portable or distributed applications due to its high flexibility and superior performance compared to other comparators in the market. The working principle of the linear-comparator is simple yet effective. The input voltage is converted to a digital signal by an adjustable threshold comparator based on the user-defined reference threshold value. The comparator outputs a high voltage when the input voltage is greater than the reference threshold and it will output a low voltage when the input voltage is below the reference threshold. The comparator has two additional output modes: hysteresis, which allows the comparator’s comparator output to go high when the input voltage is above the reference threshold, and a latch mode, which allows the output to remain at its current state when the input voltage is below the reference threshold. An example application of the HMC974LC3CTR-R5 linear-comparator is in an automotive voltage regulator. The constant-voltage regulator is designed to maintain a constant regulated output regardless of the input voltage or current draw. The HMC974LC3CTR-R5 is used to detect the change in input voltage and the comparator\'s output switches the regulator on and off to maintain the desired regulated output. This same comparison technique can be used for overvoltage protection, undervoltage protection, and current control in automotive, industrial, and consumer electronics. Furthermore, the HMC974LC3CTR-R5 can also be used in a variety of medical applications. For example, the HMC974LC3CTR-R5 can be used to detect the presence of an abnormal electrical signal in an electrocardiogram waveform. The comparator can detect the sudden change in the waveform when a waveform deflection occurs and alert the user to the presence of an abnormal waveform, notifying the user to intervene as necessary. It can also be used to detect the occurrence of a certain frequency of ECG waveforms, allowing the system to identify the various stages of a normal ECG. In conclusion, the HMC974LC3CTR-R5 is a versatile and highly-effective linear-comparator which offers superior performance and accuracy compared to conventional comparators. Its open-collector output and adjustable output modes make it an ideal choice for applications such as automotive voltage regulation, medical waveform detection, and a variety of other pulse-width modulation. By using the HMC974LC3CTR-R5 linear-comparator, design engineers can have added freedom to choose the most suitable comparator for their applications.

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