2pcs lm741 op amp dip Ic

🔹 2PCS LM741 – General-Purpose Operational Amplifier (DIP-8)

A classic, industry-standard operational amplifier in the ubiquitous 8-pin DIP package. The LM741 is a versatile, easy-to-use analog building block for amplification, filtering, signal conditioning, and countless other linear circuit applications. It’s a fundamental component for learning analog electronics.

✅ Specifications:

• Part Number: LM741CN (common DIP-8 commercial grade)

• Type: General-Purpose Operational Amplifier

• Supply Voltage Range: ±5V to ±18V (Dual Supply) or +10V to +36V (Single Supply)

• Input Offset Voltage: 2 mV (Typical, up to 6 mV max)

• Input Bias Current: 80 nA (Typical)

• Gain Bandwidth Product: 1.0 MHz (Typical)

• Slew Rate: 0.5 V/µs (Typical)

• Output Current: Up to 25 mA (Short-circuit protected)

• Input Voltage Range: Not Rail-to-Rail (Typically ~3V from supply rails)

• Output Voltage Swing: Not Rail-to-Rail (Typically ~1-2V from supply rails)

• Package: DIP-8 (Dual In-Line, 8-pin, through-hole)

• Pinout (DIP-8):

  1. Offset Null (Optional)

  2. Inverting Input (-)

  3. Non-Inverting Input (+)

  4. V- (Negative Supply / GND for single supply)

  5. Offset Null (Optional)

  6. Output

  7. V+ (Positive Supply)

  8. NC (No Connection)

• Quantity: 2 pieces

⚙️ Features:

• Short-Circuit Protection: Internally protected against output shorts.

• No Latch-Up: Designed to be free from oscillations and latch-up when common-mode range is exceeded.

• Offset Null Capability: Pins 1 & 5 allow trimming of input offset voltage to zero (for precision DC applications).

• Wide Supply Range: Flexible power supply options.

• High Gain: Large open-loop voltage gain (~200,000).

📦 Typical Applications:

• Basic Amplifiers: Inverting, non-inverting, and differential amplifier configurations.

• Active Filters: Low-pass, high-pass, and band-pass filters.

• Voltage Followers (Buffers): For impedance matching.

• Comparators & Schmitt Triggers: For simple digital switching (though dedicated comparators are better).

• Signal Generators: In oscillator circuits (Wien bridge, phase-shift).

• Summing & Integrating Amplifiers: For analog computation.

• Educational Labs: The quintessential op-amp for teaching analog circuit fundamentals.

🔧 Basic Dual Supply Configuration:

1. Power: For ±12V operation, connect Pin 7 (V+) to +12V, Pin 4 (V-) to -12V, and the circuit ground to the midpoint (0V).

2. Single Supply Option: Connect Pin 4 (V-) to GND and Pin 7 (V+) to a positive voltage (e.g., +12V). All input and output signals must then be biased to mid-supply (e.g., +6V) using a voltage divider, as the 741 cannot handle inputs near the negative rail (GND).

3. Basic Inverting Amp: Connect input via a resistor (R1) to Pin 2 (-). Connect a feedback resistor (Rf) between Pin 6 (Output) and Pin 2. Connect Pin 3 (+) to ground (in dual supply) or to a bias voltage (in single supply). Gain = -Rf/R1.

4. Decoupling: Always use 0.1µF ceramic capacitors from each supply pin (7 & 4) to ground, placed close to the IC.

⚠️ Important Limitations & Modern Context:

• Not Rail-to-Rail: Inputs and outputs cannot swing close to the supply voltages. This severely limits its usefulness in low-voltage, single-supply (e.g., 0-5V) systems. Modern op-amps (e.g., MCP6002, LM358) are better for this.

• Slow Slew Rate: The 0.5 V/µs slew rate limits its use to low-frequency signals (audio and below). It will distort fast square waves or high-frequency sine waves.

• High Power Consumption: Draws ~1.7 mA quiescent current, which is high compared to modern CMOS op-amps.

• Legacy Device: While historically important and perfectly usable for many basic, low-speed analog tasks, most new designs choose more modern op-amps with better specifications.