Overview
The µA741CPG4, produced by Texas Instruments, is a general-purpose operational amplifier that has been a staple in electronic design for over four decades. This device is known for its versatility, reliability, and ease of use. The µA741 features offset-voltage null capability, short-circuit protection, and internal frequency compensation, ensuring stability without the need for external components. It is characterized for operation from 0°C to 70°C, making it suitable for a wide range of applications.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Supply Voltage (VCC) | - | -18 | - | 18 | V |
| Input Offset Voltage (VIO) | VO = 0, 25°C | 1 | 6 | 7.5 | mV |
| Offset Voltage Adjust Range (ΔVIO(adj)) | VO = 0, 25°C | ±15 | - | - | mV |
| Input Offset Current (IIO) | VO = 0, 25°C | 20 | 200 | 300 | nA |
| Input Bias Current (IIB) | VO = 0, 25°C | 80 | 500 | - | nA |
| Common-Mode Input Voltage Range (VICR) | - | ±12 | - | ±13 | V |
| Slew Rate | - | - | 0.5 | - | V/μs |
Key Features
- Offset-Voltage Null Capability: Allows for the adjustment of input offset voltage using external potentiometers.
- Short-Circuit Protection: The device is protected against short circuits to ground or either power supply.
- No Frequency Compensation Required: Internal frequency compensation ensures stability without the need for external components.
- No Latch-Up: The device does not latch up, making it reliable in various applications.
- Large Common-Mode and Differential Voltage Ranges: Suitable for a wide range of input voltages.
- Unity-Gain Stability: Stable operation in unity-gain configurations.
- Slew Rate of 0.5 V/μs: Fast response to input changes.
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 Followers: Ideal for applications requiring high input impedance and low output impedance.
Q & A
- What is the operating temperature range of the µA741CPG4?
The device is characterized for operation from 0°C to 70°C.
- What is the typical slew rate of the µA741CPG4?
The slew rate is 0.5 V/μs.
- Does the µA741CPG4 require external frequency compensation?
No, the device has internal frequency compensation.
- How do I adjust the input offset voltage of the µA741CPG4?
You can adjust the input offset voltage using external potentiometers connected between the offset null inputs.
- What is the maximum supply voltage for the µA741CPG4?
The maximum supply voltage is ±18 V.
- Is the µA741CPG4 protected against short circuits?
- What is the common-mode input voltage range of the µA741CPG4?
The common-mode input voltage range is ±12 to ±13 V.
- Can the µA741CPG4 be used in single-supply configurations?
- What are some common applications of the µA741CPG4?
The device is commonly used in DVD recorders and players, pro audio mixers, and voltage followers.
- How should I layout the PCB to ensure best performance of the µA741CPG4?
Use good PCB layout practices, including bypass capacitors close to the power-supply pins to reduce noise.
