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LM2903M
+NomenclatureIC COMPARATOR 2 DIFF 8SOIC
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FabricantSemi - conducteurs
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Pièce fabricant #LM2903M
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Spécifications
| Attribut | Valeur |
| Part Status | Obsolete |
| Base Product Number | LM2903 |
| Type | Standard (General Purpose) |
| Number of Elements | 2 |
| Output Type | Open-Collector, Rail-to-Rail |
| Voltage - Supply, Single / Dual (±) | 2V ~ 36V, ±1V ~ 18V |
| Voltage - Input Offset (Max) | 7mV @ 5V |
| Current - Input Bias (Max) | 0.25µA @ 5V |
| Current - Output (Typ) | 16mA @ 5V |
| Current - Quiescent (Max) | 2.5mA |
| Operating Temperature | -40°C ~ 105°C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Supplier Device Package | 8-SOIC |
| Packaging | Tube |
Présentation
Description
Key features of the LM2903M include low input offset voltage, low power consumption, and the ability to function with single or dual power supplies. It typically operates at supply voltages ranging from 2V to 36V, which allows it to be used in both battery-powered and mains-powered devices. The open-collector output design permits the use of external pull-up resistors for interfacing with different logic levels. The LM2903M is commonly utilized in automotive, industrial, and consumer electronics where reliable and accurate voltage comparison is required. Its design flexibility and robustness make it a popular choice among engineers for both analog and digital circuit designs.
Equivalent
Features
1. Dual Comparator: Contains two independent voltage comparators in one package.
2. Wide Supply Voltage Range: Operates between 2V to 36V, or ±1V to ±18V for dual supplies.
3. Low Supply Current: Typically 0.8 mA per comparator, making it energy-efficient.
4. Offset Voltage: Low input offset voltage, typically around 2 mV, enhancing precision.
5. Common-Mode Range: Includes ground, allowing for operation with a single supply.
6. Output Compatibility: Open-collector output, suitable for a wide range of logic levels.
7. Temperature Range: Operates over a wide temperature range, typically from -40°C to +85°C.
8. Package Options: Available in SOIC, PDIP, and other packages for flexibility in design.
9. Versatile Applications: Ideal for applications in voltage level detection, oscillator circuits, and signal conditioning.
The LM2903M provides reliable performance in a compact form, making it suitable for both consumer and industrial applications.
Pinout
1. Pin 1 (OUT1): Output of comparator 1.
2. Pin 2 (IN1- or IN1-): Inverting input of comparator 1.
3. Pin 3 (IN1+ or IN1+): Non-inverting input of comparator 1.
4. Pin 4 (GND): Ground connection.
5. Pin 5 (IN2+ or IN2+): Non-inverting input of comparator 2.
6. Pin 6 (IN2- or IN2-): Inverting input of comparator 2.
7. Pin 7 (OUT2): Output of comparator 2.
8. Pin 8 (VCC): Positive power supply.
The LM2903M is designed to compare two voltages and provide a digital output indicating which input is higher. It is commonly used in applications like zero-crossing detectors, level shifters, and voltage monitoring circuits.
Manufacturer
Texas Instruments (TI): TI is a well-known American technology company that develops analog and embedded processing semiconductors. Founded in 1930, TI is a leader in the semiconductor sector and provides solutions for various applications, including industrial, automotive, personal electronics, and communications equipment.
ON Semiconductor: Now known as onsemi, this company is a leading provider of semiconductor-based solutions, offering a comprehensive portfolio of energy-efficient power and signal management, logic, discrete, and custom devices. onsemi focuses on automotive, industrial, cloud power, and IoT markets.
Both companies are integral parts of the global electronics supply chain, contributing to advancements in technology and innovation. They produce components like the LM2903M, a dual comparator used in various applications for comparing voltages and facilitating decision-making processes in electronic circuits.
Application
1. Voltage Monitoring: Detects voltage levels and provides alerts for under-voltage or over-voltage conditions.
2. Zero-Crossing Detection: Used in AC applications to detect zero-crossing points for phase control.
3. Pulse Width Modulation (PWM): Generates PWM signals for motor control and power regulation.
4. Analog Signal Processing: Compares analog signals in sensor interfacing and instrumentation.
5. Battery Management: Monitors battery voltage levels for charging and discharging cycles.
6. Oscillator Circuits: Used to produce square waves in timing and clock applications.
Its low power consumption and wide voltage range make it versatile in both consumer and industrial electronics.
Package
Frequently Asked Questions
Q: What is the supply voltage range for this comparator?
A: It operates from 2V to 36V single supply, or ±1V to ±18V dual supply.
Q: What is the output type of the LM2903M?
A: It features an open-collector output, which is rail-to-rail capable.
Q: Is this device suitable for high-temperature environments?
A: Yes, its operating temperature range is -40°C to 105°C, ideal for industrial use.
Q: How many comparators are in this package?
A: The device contains two independent standard comparators in a single 8-SOIC package.
Q: What is the typical output current capability?
A: It can sink up to 16mA at 5V supply voltage.
Q: What is the maximum input offset voltage for this part?
A: The input offset voltage is a maximum of 7mV at 5V supply.