Overview
The UA747CNG4 is a dual general-purpose operational amplifier produced by Texas Instruments. It features offset-voltage null capability and is electrically similar to the uA741 operational amplifier. This device is designed for a wide range of applications, including voltage-follower circuits, due to its high common-mode input voltage range and absence of latch-up. The UA747CNG4 is available in various package options, including PDIP, SOIC, and others, making it versatile for different design needs.
Key Specifications
| Parameter | Unit | uA747C | uA747M |
|---|---|---|---|
| Supply Voltage (VCC+ and VCC-) | V | ±18 | ±22 |
| Differential Input Voltage | V | ±30 | ±30 |
| Input Voltage (any input) | V | ±15 | ±15 |
| Input Offset Voltage (VO = 0, at 25°C) | mV | 1 - 6 | 1 - 5 |
| Input Offset Current (at 25°C) | nA | 20 - 200 | 20 - 200 |
| Input Bias Current (at 25°C) | nA | 80 - 500 | 80 - 500 |
| Common-Mode Input Voltage Range (at 25°C) | V | ±12 | ±12 |
| Maximum Peak-to-Peak Output Voltage (RL ≥ 10 kΩ, at 25°C) | V | 24 - 28 | 24 - 28 |
| Operating Free-Air Temperature Range | °C | 0 to 70 | -55 to 125 |
| Storage Temperature Range | °C | -65 to 150 | -65 to 150 |
Key Features
- No frequency compensation required
- Low power consumption
- Short-circuit protection
- Offset-voltage null capability
- Wide common-mode and differential voltage ranges
- No latch-up
- Designed to be interchangeable with Fairchild µA747C and µA747M
- Internal frequency compensation ensures stability without external components
Applications
The UA747CNG4 is suitable for a variety of applications, including:
- Voltage-follower circuits
- Audio and video amplifiers
- Active filters
- Integrators and differentiators
- Comparators and Schmitt triggers
- General-purpose analog circuits requiring high input impedance and low offset voltage
Q & A
- What is the UA747CNG4 operational amplifier?
The UA747CNG4 is a dual general-purpose operational amplifier with offset-voltage null capability, similar to the uA741. - What are the key features of the UA747CNG4?
Key features include no frequency compensation required, low power consumption, short-circuit protection, offset-voltage null capability, and wide common-mode and differential voltage ranges. - What are the operating temperature ranges for the UA747C and UA747M?
The UA747C operates from 0°C to 70°C, while the UA747M operates from -55°C to 125°C. - What is the maximum peak-to-peak output voltage for the UA747CNG4?
The maximum peak-to-peak output voltage is 24-28 V for a load resistance of 10 kΩ at 25°C. - Does the UA747CNG4 have short-circuit protection?
Yes, the UA747CNG4 has short-circuit protection, allowing the output to be shorted to ground or either power supply. - Can the UA747CNG4 be used in voltage-follower applications?
Yes, it is ideal for voltage-follower applications due to its high common-mode input voltage range and absence of latch-up. - What are the common package options for the UA747CNG4?
The device is available in PDIP, SOIC, and other package options. - How do I adjust the offset voltage on the UA747CNG4?
The offset voltage can be adjusted using a low-value potentiometer connected between the offset null inputs. - What is the input bias current of the UA747CNG4 at 25°C?
The input bias current at 25°C is 80-500 nA. - Is the UA747CNG4 interchangeable with other operational amplifiers?
Yes, it is designed to be interchangeable with Fairchild µA747C and µA747M.
