Overview
The OPA277UA/2K5 is a high-performance precision operational amplifier manufactured by Texas Instruments. This device is part of the OPAx277 series, which replaces the industry standard OP-177. The OPA277UA/2K5 offers improved noise performance, a wider output voltage swing, and is twice as fast with half the quiescent current compared to its predecessors. It is designed for precision operation and is suitable for a wide range of applications requiring high accuracy and stability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Offset Voltage | ±10 | µV |
| Input 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 | V |
| Quiescent Current per Amplifier | 800 | µA |
| Operating Temperature Range | -40 to 85 | °C |
| Package Type | SOIC (D) | |
| Pins | 8 |
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 ratio: 140 dB
- High power supply rejection ratio: 130 dB
- Low bias current: 1 nA maximum
- Wide supply range: ±2 V to ±18 V
- Low quiescent current: 800 µA per amplifier
- Single, dual, and quad versions available
- Replaces OP-07, OP-77, and OP-177
- Completely independent circuitry in dual and quad versions for minimal crosstalk and interaction
Applications
The OPA277UA/2K5 is ideal for various high-precision applications, including:
- Signal conditioning and high-precision instrumentation
- Transducer amplifiers
- Filtering and differencing circuits
- Video amplifiers and wideband applications
- Space-constrained systems due to its small SOIC-8 package
Q & A
- What is the input offset voltage of the OPA277UA/2K5?
The input offset voltage is ±10 µV.
- What is the input offset voltage drift of the OPA277UA/2K5?
The input offset voltage drift is ±0.1 µV/°C.
- What is the open-loop gain of the OPA277UA/2K5?
The open-loop gain is 134 dB.
- What is the common-mode rejection ratio of the OPA277UA/2K5?
The common-mode rejection ratio is 140 dB.
- What is the power supply rejection ratio of the OPA277UA/2K5?
The power supply rejection ratio is 130 dB.
- What is the bias current of the OPA277UA/2K5?
The bias current is 1 nA maximum.
- What is the supply voltage range of the OPA277UA/2K5?
The supply voltage range is ±2 V to ±18 V.
- What is the quiescent current per amplifier of the OPA277UA/2K5?
The quiescent current per amplifier is 800 µA.
- What are the available package types for the OPA277UA/2K5?
The OPA277UA/2K5 is available in SOIC (D) package with 8 pins.
- What are some typical applications of the OPA277UA/2K5?
Typical applications include signal conditioning, high-precision instrumentation, transducer amplifiers, filtering, and video amplifiers.
