Overview
The µA741CDRG4, 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 part of the µA741 family and is characterized for operation from 0°C to 70°C. It features offset-voltage null capability, short-circuit protection, and internal frequency compensation, ensuring stability without the need for external components. The µA741 is ideal for various applications due to its high common-mode input voltage range and the absence of latch-up, making it suitable for voltage-follower applications.
Key Specifications
| Parameter | Test Conditions | MIN | TYP | 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 | 20 | 200 | 500 | nA |
| Common-Mode Input Voltage Range (VICR) | ±12 | ±13 | V | ||
| Maximum Peak Output Voltage Swing (VOM) | RL = 10 kΩ | ±12 | ±14 | V | |
| Large-Signal Differential Voltage Amplification (AVD) | RL ≥ 2 kΩ | 20 | 200 | V/mV | |
| Input Resistance (ri) | 0.3 | 2 | MΩ | ||
| Output Resistance (ro) | VO = 0 | 75 | Ω | ||
| Input Capacitance (Ci) | 1.4 | pF | |||
| Common-Mode Rejection Ratio (CMRR) | VIC = VICRmin | 70 | 90 | dB | |
| Supply Voltage Sensitivity (ΔVIO/ΔVCC) | VCC = ±9 V to ±15 V | 30 | 150 | µV/V | |
| Short-Circuit Output Current (IOS) | ±25 | ±40 | mA | ||
| Supply Current (ICC) | VO = 0, no load | 1.7 | 2.8 | mA | |
| Total Power Dissipation (PD) | VO = 0, no load | 50 | 85 | mW |
Key Features
- Offset-Voltage Null Capability: Allows for the adjustment of input offset voltage using external pins.
- Short-Circuit Protection: The output is protected against short circuits to ground or either power supply.
- Large Common-Mode and Differential Voltage Ranges: Supports a wide range of input voltages.
- No Frequency Compensation Required: Internal frequency compensation ensures stability without external components.
- No Latch-Up: Prevents the device from entering an unintended state.
- Unity-Gain Stability: Stable operation in unity-gain configurations.
Applications
- DVD Recorders and Players: Used in audio and video signal processing.
- Pro Audio Mixers: Utilized for audio signal amplification and processing.
- Voltage-Follower Applications: Ideal due to its high common-mode input voltage range and absence of latch-up.
Q & A
- What is the operating temperature range of the µA741CDRG4?
The µA741CDRG4 is characterized for operation from 0°C to 70°C.
- What is the input offset voltage range of the µA741CDRG4?
The input offset voltage range is typically 6 mV at 25°C, with a maximum of 7.5 mV over the full temperature range.
- Does the µA741CDRG4 require external frequency compensation?
No, the µA741CDRG4 has internal frequency compensation and does not require external components for stability.
- What is the common-mode input voltage range of the µA741CDRG4?
The common-mode input voltage range is ±12 V to ±13 V.
- What is the maximum peak output voltage swing of the µA741CDRG4?
The maximum peak output voltage swing is ±12 V for a 10 kΩ load and ±10 V for a 2 kΩ load.
- Is the µA741CDRG4 protected against short circuits?
- What is the supply current of the µA741CDRG4?
The supply current is typically 1.7 mA to 2.8 mA with no load.
- What is the total power dissipation of the µA741CDRG4?
The total power dissipation is typically 50 mW to 85 mW with no load.
- Can the input offset voltage be adjusted?
- What are some common applications of the µA741CDRG4?
