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UA741CN
+BOMIC OPAMP GP 1 CIRCUIT 8DIP
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ManufacturerSTMicroelectronics
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Mfr. Part #UA741CN
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Datasheet UA741CN DataSheet
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In Stock5779
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Specifications
| Attribute | Value |
| Part Status | Obsolete |
| Base Product Number | UA741 |
| Amplifier Type | Standard (General Purpose) |
| Number of Circuits | 1 |
| Slew Rate | 0.5V/µs |
| Gain Bandwidth Product | 1 MHz |
| Current - Input Bias | 10 nA |
| Voltage - Input Offset | 1 mV |
| Current - Supply | 1.7mA |
| Current - Output / Channel | 25 mA |
| Voltage - Supply Span (Min) | 10 V |
| Voltage - Supply Span (Max) | 44 V |
| Operating Temperature | 0°C ~ 70°C |
| Mounting Type | Through Hole |
| Package | 8-DIP (0.300", 7.62mm) |
| Supplier Device Package | 8-DIP |
| Packaging | Tube |
Overview
Description
Key characteristics of the UA741CN include a large input voltage range, moderate bandwidth, and internal frequency compensation, which simplifies its use by requiring no external components for stabilization. It operates on dual power supplies, typically ±15V, but can function with single or asymmetrical supply voltages.
The UA741CN's input offset voltage is relatively low, and it provides short-circuit protection, ensuring durability in various circuit configurations. While it may not offer the high-speed or precision of more advanced op-amps, its ease of use and robustness make it popular in educational settings and prototyping.
Overall, the UA741CN’s balance of performance and simplicity makes it a staple component for hobbyists and professionals designing analog circuits.
Equivalent
Features
1. High Input Impedance: Offers high input impedance, which minimizes the loading effect on the preceding stage.
2. Low Output Impedance: Ensures better coupling with the next stage in the circuit.
3. Wide Supply Voltage Range: Operates over a wide range of supply voltages, typically from ±5V to ±18V.
4. Offset Voltage: Features low offset voltage, enhancing accuracy in DC applications.
5. Frequency Compensation: Internally frequency-compensated, simplifying circuit design by eliminating the need for external components.
6. Slew Rate: Provides a moderate slew rate, suitable for many audio and signal processing applications.
7. Short Circuit Protection: Built-in short-circuit protection to prevent damage under fault conditions.
8. Temperature Stability: Exhibits good performance over a range of operating temperatures.
9. Package Type: Comes in an 8-pin dual in-line package (DIP), making it easy to handle and integrate into standard circuit boards.
Overall, the UA741CN is popular for its reliability and versatility in various analog applications such as signal conditioning, filtering, and amplification.
Pinout
1. Pin 1 (Offset Null): Used to adjust the input offset voltage to zero using a potentiometer connected between pins 1 and 5.
2. Pin 2 (Inverting Input): The input terminal where the signal is applied with a phase opposite to the output.
3. Pin 3 (Non-Inverting Input): The input terminal where the signal is applied with the same phase as the output.
4. Pin 4 (V- or VCC-): The negative power supply voltage.
5. Pin 5 (Offset Null): Used in conjunction with pin 1 to nullify the offset voltage.
6. Pin 6 (Output): The output terminal of the op-amp.
7. Pin 7 (V+ or VCC+): The positive power supply voltage.
8. Pin 8 (No Connection): Typically not connected to any internal circuitry.
The UA741CN is widely used for a variety of applications including signal amplification, filtering, and mathematical operations due to its versatility and ease of use.
Manufacturer
Application
1. Signal Amplification: Used in audio amplifiers and sensor signal conditioning.
2. Active Filters: Implementing filter circuits like low-pass, high-pass, band-pass, and band-stop filters.
3. Oscillators: Essential in generating waveforms for various electronic applications.
4. Voltage Followers: Used to buffer signals and prevent loading effects in circuits.
5. Comparators: Employed for comparing voltages in voltage level detection systems.
6. Analog Mathematical Operations: Performing operations such as addition, subtraction, integration, and differentiation in analog computers and controllers.
These features make the UA741CN suitable for educational, industrial, and consumer electronics.
Package
Frequently Asked Questions
Q: What is the typical supply voltage range for the UA741CN?
A: The UA741CN operates with a supply span from 10V to 44V, suitable for dual or single supply designs.
Q: What is the slew rate of the UA741CN op-amp?
A: The slew rate is 0.5V/μs, limiting its use to low-frequency signals below 1 MHz.
Q: Can the UA741CN drive a 25 mA load directly?
A: Yes, the output channel can source or sink up to 25 mA, adequate for driving LEDs or low-power loads.
Q: What is the input bias current for this amplifier?
A: The input bias current is 10 nA, which may require careful impedance matching in high-impedance circuits.
Q: Is the UA741CN suitable for precision DC applications?
A: With an input offset voltage of 1 mV, it offers moderate precision but may need nulling for critical DC circuits.
Q: What package type does the UA741CN come in?
A: It uses an 8-pin DIP (0.300", 7.62mm) through-hole package, ideal for prototyping and breadboards.
Q: What is the operating temperature range of the UA741CN?
A: The operating temperature range is 0°C to 70°C, suitable for commercial environments only.