Overview
The OPA4277UA 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 ultra-low offset voltage, low drift, and high performance across a wide range of supply voltages. The OPA4277UA is particularly suited for demanding applications that require high accuracy and low parametric drift with time and temperature.
The OPA4277UA is available in a 14-pin SOIC (D) package and operates from ±2 V to ±18 V supplies, making it versatile for various real-world applications. It offers improved noise, wider output voltage swing, and is twice as fast with half the quiescent current compared to its predecessors.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | SOIC (D) |
| Pins | 14 |
| Operating Temperature Range (°C) | -40 to 85 |
| Number of Channels per Chip | 4 |
| Typical Gain Bandwidth Product | 1 MHz |
| Typical Dual Supply Voltage | ±2 V to ±18 V |
| Typical Slew Rate | 0.8 V/µs |
| 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 |
| Input Bias Current | 1 nA maximum |
| Quiescent Current per Amplifier | 800 µA |
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
- Transducer and strain gauge amplifiers
- Precision integrators and active filters
- High accuracy instrumentation
Q & A
- What is the typical gain bandwidth product of the OPA4277UA?
The typical gain bandwidth product of the OPA4277UA is 1 MHz.
- What is the operating temperature range of the OPA4277UA?
The operating temperature range of the OPA4277UA is -40°C to 85°C.
- How many channels does the OPA4277UA have?
The OPA4277UA has 4 channels.
- What is the offset voltage of the OPA4277UA?
The offset voltage of the OPA4277UA is 10 µV.
- What is the common-mode rejection ratio of the OPA4277UA?
The common-mode rejection ratio of the OPA4277UA is 140 dB.
- Is the OPA4277UA rail-to-rail?
No, the OPA4277UA is not rail-to-rail.
- What is the typical slew rate of the OPA4277UA?
The typical slew rate of the OPA4277UA is 0.8 V/µs.
- What is the quiescent current per amplifier for the OPA4277UA?
The quiescent current per amplifier for the OPA4277UA is 800 µA.
- What are some common applications of the OPA4277UA?
Common applications include analog input modules, weigh scales, temperature transmitters, pressure transmitters, and data acquisition systems.
- Does the OPA4277UA replace any other operational amplifiers?
Yes, the OPA4277UA replaces the OP-07, OP-77, and OP-177.
- Is the OPA4277UA unity-gain stable?
Yes, the OPA4277UA is unity-gain stable and free from phase inversion and overload problems.
