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LM139ADR

Name: LM139ADR
Rating: 4.7 (12 reviews)

IC VOLTAGE COMPARATR QUAD 14SOIC

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包 SOIC (D)-14
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規格

Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
Type	Differential
NumberofElements	4
OutputType	CMOS, MOS, Open-Collector, TTL
Voltage-SupplySingle/Dual(±)	2V ~ 30V, ±1V ~ 15V
Voltage-InputOffset(Max)	2mV @ 30V
Current-InputBias(Max)	0.1µA @ 5V
Current-Output(Typ)	20mA
Current-Quiescent(Max)	2mA
OperatingTemperature	-55°C ~ 125°C
Package/Case	14-SOIC (0.154, 3.90mm Width)
MountingType	Surface Mount

概述

Description

The LM139ADR is a quad comparator integrated circuit (IC) designed for various analog signal processing applications. It features four independent, high-speed voltage comparators with an open-collector output, allowing them to interface easily with different voltage levels. The IC operates over a wide supply voltage range from 2V to 36V, making it versatile for various electronic projects.
Key attributes include low input offset voltage, high common-mode rejection ratio, and fast response time, typically around 1.5 microseconds. The LM139ADR's open-collector configuration enables wired-AND logic, allowing multiple outputs to be connected together without interference.
Common applications include zero-crossing detectors, level shifters, and signal conditioning in sensors. Its small packaging (often in an 8-pin DIP or SOIC) facilitates integration into space-constrained designs. Overall, the LM139ADR is a reliable choice for developers and engineers requiring efficient signal comparison in their electronic systems.

Features

The LM139ADR is a quad comparator integrated circuit featuring four independent comparators with open-collector outputs. Key features include:
1. Wide Supply Voltage Range: Operates from a single +2 to +36 V or dual ±1 to ±18 V power supply.
2. Low Input Offset Voltage: Typically 2 mV, ensuring high accuracy.
3. High Speed: Fast response time with a typical propagation delay of 300 ns.
4. Low Input Current: Input bias current is typically 20 nA, suitable for high-impedance applications.
5. Thermal Shutdown: Built-in thermal protection for improved reliability.
6. Hysteresis: Can be configured for positive feedback, providing noise immunity.
7. Temperature Range: Operates over a temperature range of -40°C to +125°C.
8. Open-Collector Outputs: Allows for wired-AND configurations and interfacing with higher voltage levels.
These features make the LM139ADR ideal for various applications, including voltage level detection, signal conditioning, and comparator circuits in industrial and consumer electronics.

Package

The LM139ADR is typically packaged in an 8-pin SOIC (Small Outline Integrated Circuit) format. This surface-mount package is designed for efficient use of PCB space and improved thermal performance.

Pinout

The LM139ADR is a quad comparator integrated circuit with a total of 14 pins. Each of the four comparators has a non-inverting input (A), an inverting input (B), and an output (Y). The pin configuration is as follows:
1. Offset Null
2. Inverting Input (Comparator 1)
3. Non-Inverting Input (Comparator 1)
4. Output (Comparator 1)
5. Ground
6. Output (Comparator 2)
7. Non-Inverting Input (Comparator 2)
8. Inverting Input (Comparator 2)
9. Offset Null
10. Output (Comparator 3)
11. Non-Inverting Input (Comparator 3)
12. Inverting Input (Comparator 3)
13. Supply Voltage (Vcc)
14. Output (Comparator 4)
The LM139ADR operates with a wide supply voltage range and features an open-collector output configuration, making it suitable for various applications, including voltage level detection and signal conditioning.

Manufacturer

The LM139ADR is manufactured by Texas Instruments (TI), a leading semiconductor company. Texas Instruments specializes in designing and manufacturing analog, digital signal processing (DSP), and microcontroller technologies. The company is well-known for its integrated circuits (ICs) used in a wide range of applications, including automotive, industrial, communications, and consumer electronics. TI is recognized for its innovation and quality in the electronics industry and has a strong focus on research and development to create advanced technological solutions.

Application

The LM139ADR is a quad comparator commonly used in applications such as voltage level detection, voltage comparison, oscillators, and signal conditioning. It is often utilized in automotive systems, temperature monitoring, battery management, and analog-to-digital conversion systems. Its ability to provide low power consumption and wide operating voltage range makes it suitable for various electronic circuits requiring precise signal comparison.

Equivalent

Equivalent products to the LM139ADR (a quad comparator) include the LM2901, LM393, TLV3701, and MAX9014. These alternatives offer similar functionalities but may differ in specifications like supply voltage, output type, or temperature range. Always check the datasheet for specific requirements to ensure compatibility.