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Name: LMV7219M5X
Brand: Texas Instruments
SKU: LMV7219M5X
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments LMV7219M5X

Part No.:: LMV7219M5X

Manufacturer:: Texas Instruments

Package:: SC-74A, SOT-753

Datasheet:: LMV7219M5X.pdf

Description:: IC COMPARATOR 2.7V-5V RR SOT23-5

In Stock:: 208197

Quantity:: Add To Cart

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LMV7219M5X Specifications

Package/Case:
SC-74A, SOT-753
Packaging:
Tape & Reel (TR),Bulk
Series:
-
ProductStatus:
Active
Type:
General Purpose
NumberofElements:
1
OutputType:
Push-Pull, Rail-to-Rail
Voltage-SupplySingle/Dual(±):
2.7V ~ 5V
Voltage-InputOffset(Max):
6mV @ 5V
Current-InputBias(Max):
0.95µA @ 5V
Current-Output(Typ):
-
Current-Quiescent(Max):
1.8mA
CMRRPSRR(Typ):
85dB CMRR, 85dB PSRR
PropagationDelay(Max):
20ns
Hysteresis:
7.5mV
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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LMV7219M5X information

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LMV7219M5X Typical application Circuitry

LMV7219M5X

LMV7219M5X is a low-power, rail-to-rail input, high-speed comparator from Texas Instruments. It is designed for applications requiring fast response times with minimal power consumption. Operating from a 2.7V to 5V supply voltage, this comparator is an excellent choice for battery-operated devices, portable applications, and any system where power efficiency is crucial. The SOT-23-5 package of LMV7219M5X makes it suitable for space-constrained applications.

Application Scenario

A practical application for LMV7219M5X is in a pulse width modulation (PWM) signal generation circuit for motor control in portable electronic devices. In this scenario, LMV7219M5X can be used to compare a varying analog signal (like a sine wave) against a fixed threshold to generate a PWM signal for controlling the speed of a motor.

Parameter Features

- Supply Voltage Range: 2.7V to 5V, accommodating a variety of low-voltage power sources.

- Low Power Consumption: Ideal for extending battery life in portable applications.

- High Speed: Fast propagation delay, enabling quick response applications.

- Output Type: Push-pull output that eliminates the need for an external pull-up resistor, simplifying the design.

Circuit Design Considerations

Designing with LMV7219M5X involves ensuring the input signal levels are within the supply voltage range, providing a stable power supply, and considering the load connected to the output to ensure proper signal driving capability.

Detailed Circuit Connection

Power Supply Connection

Connect a stable power source within the 2.7V to 5V range to the VCC pin (pin 5) of LMV7219M5X. This connection ensures the comparator operates within its specified supply voltage range.

Reference Voltage Setup

To establish a threshold for PWM signal generation, apply a fixed reference voltage to the non-inverting input (IN+, pin 4). This reference voltage can be generated using a voltage divider or a precision reference source, depending on the required accuracy.

Analog Signal Input

Apply the analog signal, such as a sine wave from an oscillator or sensor, to the inverting input (IN-, pin 3). This signal will be compared against the reference voltage to generate the PWM signal.

Output PWM Signal

The OUT pin (pin 1) provides the PWM signal based on the comparison of the analog input signal and the reference voltage. This output can be directly connected to the control circuitry of the motor, given the push-pull configuration of LMV7219M5X.

Ground Connection

Ensure that the GND pin (pin 2) is connected to the system ground. A solid ground connection is crucial for the stable operation of the comparator.

When designing circuits with LMV7219M5X, it's important to minimize the length of the traces connecting to the inputs to reduce parasitic capacitance and ensure fast response times. Additionally, the power supply should be decoupled with capacitors placed close to the VCC and GND pins to maintain stability. Careful consideration of the load on the output is also essential to ensure that the comparator can drive it without distortion or loss of signal integrity.

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

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