Overview
The µA741CD, produced by Texas Instruments, is a general-purpose operational amplifier that has been a staple in electronic design for over four decades. This device features offset-voltage null capability, making it highly versatile for various applications. The µA741CD is characterized by its high common-mode input voltage range, absence of latch-up, and internal frequency compensation, ensuring stability without the need for external components. It is also short-circuit protected and can operate in both single-supply and dual-supply configurations. The device is available in an 8-pin SOIC package and is specified for operation from 0°C to 70°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Offset Voltage (VIO) | 1 | 6 | 7.5 | mV |
| Offset Voltage Adjust Range (ΔVIO(adj)) | ±15 | mV | ||
| Input Offset Current (IIO) | 20 | 200 | 300 | nA |
| Input Bias Current (IIB) | 80 | 500 | nA | |
| Common-Mode Input Voltage Range (VICR) | ±12 | ±13 | V | |
| Maximum Peak Output Voltage Swing (VOM) | ±10 | ±14 | V (RL = 2 kΩ) | |
| Large-Signal Differential Voltage Amplification (AVD) | 20 | 200 | V/mV (RL ≥ 2 kΩ) | |
| Input Resistance (ri) | 0.3 | 2 | MΩ | |
| Output Resistance (ro) | 75 | Ω | ||
| Input Capacitance (Ci) | 1.4 | pF | ||
| Common-Mode Rejection Ratio (CMRR) | 70 | 90 | dB | |
| Supply Voltage Sensitivity (ΔVIO/ΔVCC) | 30 | 150 | µV/V | |
| Short-Circuit Output Current (IOS) | ±25 | ±40 | mA | |
| Supply Current (ICC) | 1.7 | 2.8 | mA | |
| Total Power Dissipation (PD) | 50 | 85 | mW | |
| Rise Time (tr) | 0.3 | µs (VI = 20 mV, RL = 2 kΩ, CL = 100 pF) | ||
| Slew Rate (SR) | 0.5 | V/µs (VI = 10 V, RL = 2 kΩ, CL = 100 pF) | ||
| Supply Voltage (VCC±) | ±3.5 | ±18 | V | |
| Operating Temperature Range | 0 | 70 | °C | |
| Package Type | 8-SOIC |
Key Features
- Short-Circuit Protection: The device is protected against short circuits, ensuring reliability in various applications.
- Offset-Voltage Null Capability: Allows for the adjustment of input offset voltage using external potentiometers.
- Large Common-Mode and Differential Voltage Ranges: Supports a wide range of input voltages, making it versatile for different applications.
- No Frequency Compensation Required: Internal frequency compensation ensures stability without the need for external components.
- No Latch-Up: The absence of latch-up makes the amplifier ideal for voltage-follower applications.
- Unity-Gain Stability: Stable operation at unity gain without external components.
- Slew Rate of 0.5 V/μs: Fast response to input changes.
- Gain Bandwidth Product of 1 MHz: Suitable for applications requiring moderate bandwidth.
Applications
- DVD Recorders and Players: Used in audio and video signal processing.
- Pro Audio Mixers: Employed in professional audio equipment for signal amplification and processing.
- Voltage-Follower Applications: Ideal due to its high common-mode input voltage range and absence of latch-up.
- General-Purpose Amplification: Suitable for a wide range of electronic circuits requiring operational amplifiers.
Q & A
- What is the primary function of the µA741CD operational amplifier?
The primary function of the µA741CD is to amplify weak electrical signals, making it a general-purpose operational amplifier.
- What is the operating temperature range of the µA741CD?
The operating temperature range is from 0°C to 70°C.
- What is the significance of the offset-voltage null capability in the µA741CD?
The offset-voltage null capability allows for the adjustment of the input offset voltage, which is crucial for minimizing errors in the output signal.
- Does the µA741CD require external frequency compensation?
No, the µA741CD does not require external frequency compensation due to its internal frequency compensation.
- What is the slew rate of the µA741CD?
The slew rate of the µA741CD is 0.5 V/μs.
- What are the common applications of the µA741CD?
Common applications include DVD recorders and players, pro audio mixers, and general-purpose amplification.
- What is the package type of the µA741CD?
The µA741CD is available in an 8-pin SOIC package.
- Is the µA741CD short-circuit protected?
- What is the gain bandwidth product of the µA741CD?
The gain bandwidth product is 1 MHz.
- Is the µA741CD still in production?
No, the µA741CD is no longer in production, and new designs should consider alternative products.
