Overview
The UA741CDR, 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 and reliability, making it suitable for a wide range of applications. The UA741CDR features offset-voltage null capability, short-circuit protection, and internal frequency compensation, ensuring stability without the need for external components. It operates within a temperature range of 0°C to 70°C, making it ideal for various environmental conditions.
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 | 80 | 500 | nA | |
| Common-Mode Input Voltage Range (VICR) | ±12 | ±13 | V | ||
| Maximum Peak Output Voltage Swing (VOM) | RL = 2 kΩ | ±10 | ±13 | 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 | |
| Rise Time (tr) | VI = 20 mV, RL = 2 kΩ, CL = 100 pF | 0.3 | µs | ||
| Slew Rate (SR) | VI = 10 V, RL = 2 kΩ, CL = 100 pF | 0.5 | V/µs |
Key Features
- Offset-Voltage Null Capability: Allows for the adjustment of input offset voltage using external pins, which is useful for compensating for mismatches in the differential input stage.
- Short-Circuit Protection: The device is protected against short circuits to ground or either power supply, enhancing its reliability and durability.
- 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.
- Large Common-Mode and Differential Voltage Ranges: Supports a wide range of input voltages, making it versatile for various applications.
- High Slew Rate: A slew rate of 0.5 V/μs allows for fast response times to input changes.
Applications
- DVD Recorders and Players: Used in audio and video processing circuits due to its high fidelity and stability.
- Pro Audio Mixers: Utilized in professional audio equipment for its reliable performance and low noise characteristics.
- Voltage-Follower Applications: Ideal for applications requiring a high input impedance and low output impedance.
Q & A
- What is the typical operating temperature range for the UA741CDR?
The UA741CDR operates within a temperature range of 0°C to 70°C.
- What is the input offset voltage range for the UA741CDR?
The input offset voltage range is typically between 1 mV and 6 mV at 25°C.
- Does the UA741CDR require external frequency compensation?
No, the UA741CDR has internal frequency compensation and does not require external components for stability.
- What is the slew rate of the UA741CDR?
The slew rate of the UA741CDR is 0.5 V/μs.
- Is the UA741CDR protected against short circuits?
Yes, the UA741CDR has short-circuit protection to ground or either power supply).
- What is the common-mode input voltage range for the UA741CDR?
The common-mode input voltage range is typically between ±12 V and ±13 V).
- What is the maximum peak output voltage swing for the UA741CDR?
The maximum peak output voltage swing is typically ±10 V to ±13 V with a 2 kΩ load).
- How does the UA741CDR handle input offset voltage adjustments?
The UA741CDR allows for input offset voltage adjustments using external pins (OFFSET N1 and OFFSET N2)).
- What are some common applications of the UA741CDR?
The UA741CDR is commonly used in DVD recorders and players, pro audio mixers, and voltage-follower applications).
- What is the supply current for the UA741CDR?
The supply current for the UA741CDR is typically between 1.7 mA and 2.8 mA with no load).
