Overview
The OPA4277UA/2K5G4 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 enhanced speed with reduced quiescent current. The OPA4277UA/2K5G4 is particularly noted for its ultra-low offset voltage and drift, making it suitable for applications requiring high precision and stability.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOIC-14 (0.154", 3.90mm Width) |
| Pins | 14 |
| Operating Temperature Range (°C) | -40 to 85 |
| Offset Voltage | 10 µV |
| Offset Drift | ±0.1 µV/°C |
| Open-Loop Gain | 134 dB |
| Common-Mode Rejection | 140 dB |
| Power-Supply Rejection | 130 dB |
| Bias Current | 1 nA (maximum) |
| Supply 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
- Analog input modules
- Weigh scales
- Temperature transmitters
- Pressure transmitters
- Data acquisition (DAQ) systems
- Lab and field instrumentation
- Battery testing
Q & A
- What is the offset voltage of the OPA4277UA/2K5G4?
The offset voltage is 10 µV. - What is the operating temperature range of the OPA4277UA/2K5G4?
The operating temperature range is -40°C to 85°C. - What are the key features of the OPA4277UA/2K5G4?
Key features include ultra-low offset voltage, ultra-low drift, high open-loop gain, high common-mode rejection, and low bias current. - What supply range does the OPA4277UA/2K5G4 operate within?
The device operates within a supply range of ±2 V to ±18 V. - Is the OPA4277UA/2K5G4 unity-gain stable?
Yes, the OPA4277UA/2K5G4 is unity-gain stable. - What are some common applications of the OPA4277UA/2K5G4?
Common applications include analog input modules, weigh scales, temperature transmitters, pressure transmitters, and data acquisition systems. - Does the OPA4277UA/2K5G4 replace any other operational amplifiers?
Yes, it replaces the OP-07, OP-77, and OP-177. - What is the quiescent current of the OPA4277UA/2K5G4?
The quiescent current is 800 µA per amplifier. - Is the OPA4277UA/2K5G4 free from phase inversion and overload problems?
Yes, it is free from phase inversion and overload problems. - What package options are available for the OPA4277UA/2K5G4?
The device is available in SOIC-14 and PDIP-14 packages.
