Overview
The OPA2277UA/2K5 is a high-precision operational amplifier produced by Texas Instruments. It is part of the OPAx277 series, which replaces industry-standard op-amps like the OP-177. This device is known for its ultra-low offset voltage, low drift, and high performance across a wide range of supply voltages. The OPA2277UA/2K5 is available in a SOIC (D) package with 8 pins and operates over a temperature range of -40°C to 85°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Offset Voltage (VOS) | ±10 | ±20 | ±25 | µV |
| Input Offset Voltage Drift (dVOS/dT) | ±0.1 | ±0.15 | ±0.25 | µV/°C |
| Open-Loop Gain | 134 | dB | ||
| Common-Mode Rejection Ratio (CMRR) | 140 | dB | ||
| Power-Supply Rejection Ratio (PSRR) | 130 | dB | ||
| Input Bias Current (IB) | ±0.5 | ±1 | ±2.8 | nA |
| Supply Voltage Range | ±2 V | ±18 V | ||
| Quiescent Current per Amplifier | 800 | µA | ||
| Operating Temperature Range | -40°C | 85°C |
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
- Completely independent circuitry in dual and quad versions for minimal crosstalk
- Unity-gain stable with excellent dynamic behavior over a wide range of load conditions
Applications
The OPA2277UA/2K5 is suitable for a variety of precision analog applications, including:
- Precision instrumentation and measurement systems
- Medical equipment and diagnostic devices
- Aerospace and defense systems requiring high reliability and precision
- Industrial control and automation systems
- High-performance audio and video equipment
Q & A
- What is the input offset voltage of the OPA2277UA/2K5?
The input offset voltage is typically ±10 µV, with a maximum of ±25 µV.
- What is the input offset voltage drift of the OPA2277UA/2K5?
The input offset voltage drift is typically ±0.1 µV/°C, with a maximum of ±0.25 µV/°C.
- What is the open-loop gain of the OPA2277UA/2K5?
The open-loop gain is 134 dB.
- What is the common-mode rejection ratio (CMRR) of the OPA2277UA/2K5?
The CMRR is 140 dB.
- What is the power-supply rejection ratio (PSRR) of the OPA2277UA/2K5?
The PSRR is 130 dB.
- What is the input bias current of the OPA2277UA/2K5?
The input bias current is typically ±1 nA, with a maximum of ±2.8 nA.
- What is the supply voltage range for the OPA2277UA/2K5?
The supply voltage range is ±2 V to ±18 V.
- What is the quiescent current per amplifier for the OPA2277UA/2K5?
The quiescent current per amplifier is 800 µA.
- Is the OPA2277UA/2K5 unity-gain stable?
Yes, the OPA2277UA/2K5 is unity-gain stable.
- What are the available package options for the OPA2277UA/2K5?
The OPA2277UA/2K5 is available in a SOIC (D) package with 8 pins.
