Overview
The OPA4277UA/2K5 is a high-precision operational amplifier produced by Texas Instruments. It is part of the OPAx277 series, which replaces the industry standard OP-177. These devices are known for their improved noise performance, wider output voltage swing, and faster operation with reduced quiescent current. The OPA4277UA/2K5 is particularly noted for its ultra-low offset voltage and drift, making it suitable for a wide range of precision applications.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOIC (D), 14 pins |
| Operating Temperature Range | -40°C to 85°C |
| Offset Voltage | 10 µV |
| Offset Voltage Drift | ±0.1 µV/°C |
| Open-Loop Gain | 134 dB |
| Common-Mode Rejection Ratio | 140 dB |
| Power-Supply Rejection Ratio | 130 dB |
| Bias Current | 1 nA maximum |
| Supply Voltage Range | ±2 V to ±18 V |
| Quiescent Current | 800 µA/amplifier |
Key Features
- Ultra-low offset voltage: 10 µV
- Ultra-low drift: ±0.1 µV/°C
- High open-loop gain: 134 dB
- High common-mode rejection: 140 dB
- High power-supply rejection: 130 dB
- Low bias current: 1-nA maximum
- Wide supply range: ±2 V to ±18 V
- Low quiescent current: 800 µA/amplifier
- Single, dual, and quad versions available
- Replaces OP-07, OP-77, and OP-177
- Unity-gain stable and free from phase inversion and overload problems
Applications
The OPA4277UA/2K5 is suitable for various precision applications, including but not limited to:
- Precision instrumentation
- Medical equipment
- Aerospace and defense systems
- High-performance audio equipment
- Industrial control systems
Q & A
- What is the offset voltage of the OPA4277UA/2K5?
The offset voltage is 10 µV. - What is the operating temperature range of the OPA4277UA/2K5?
The operating temperature range is -40°C to 85°C. - What are the supply voltage limits for the OPA4277UA/2K5?
The supply voltage range is ±2 V to ±18 V. - Is the OPA4277UA/2K5 unity-gain stable?
Yes, the OPA4277UA/2K5 is unity-gain stable. - What are the key features of the OPA4277UA/2K5?
The key features include ultra-low offset voltage, ultra-low drift, high open-loop gain, high common-mode rejection, and high power-supply rejection. - Can the OPA4277UA/2K5 replace other operational amplifiers?
Yes, it can replace OP-07, OP-77, and OP-177. - What is the quiescent current of the OPA4277UA/2K5?
The quiescent current is 800 µA per amplifier. - Is the OPA4277UA/2K5 available in different package configurations?
Yes, it is available in single, dual, and quad versions. - What are some common applications of the OPA4277UA/2K5?
Common applications include precision instrumentation, medical equipment, aerospace and defense systems, high-performance audio equipment, and industrial control systems. - Where can I find detailed specifications for the OPA4277UA/2K5?
Detailed specifications can be found in the datasheet available on Texas Instruments' official website or through distributors like Mouser Electronics.
