Overview
The OPA4277UAE4 is a high-precision operational amplifier produced by Burr Brown, which is now a part of Texas Instruments. This quad operational amplifier is designed to offer superior performance with ultralow offset voltage and drift, low bias current, high common-mode rejection, and high power supply rejection. It is part of the OPAx277 series, which replaces the industry standard OP-177 and provides improved noise, wider output voltage swing, and reduced quiescent current.
Key Specifications
| Parameter | Unit | Min | Typical | Max |
|---|---|---|---|---|
| Input Offset Voltage (V0S) | µV | ±10 | ±20 | ±50 |
| Input Offset Voltage Drift (dV0S/dT) | µV/°C | ±0.1 | ±0.15 | ±1 |
| Input Bias Current | nA | - | ±1.5 | - |
| Common-Mode Rejection Ratio (CMRR) | dB | - | 120 | - |
| Power Supply Rejection Ratio (PSRR) | µV/V | - | ±0.5 | - |
| Operating Voltage Range | V | ±2 | - | ±18 |
| Short-Circuit Current (ISC) | mA | - | ±35 | - |
| Open-Loop Output Impedance (ZO) | Ω | - | 40 | - |
Key Features
- Ultralow offset voltage and drift: Ensures high precision in various applications.
- Low bias current: Minimizes the impact of the amplifier on the input signal.
- High common-mode rejection ratio (CMRR): Reduces the effect of common-mode signals.
- High power supply rejection ratio (PSRR): Maintains performance across a wide range of power supply voltages.
- Wide output voltage swing: Allows for a broader range of output voltages.
- Low quiescent current: Reduces power consumption.
- Single, dual, and quad versions available: Offers flexibility in design.
Applications
- High-precision instrumentation: Suitable for applications requiring low noise and high accuracy.
- Medical devices: Ideal for medical equipment where precision and reliability are crucial.
- Aerospace and defense: Used in various military and aerospace applications due to its robust performance.
- Industrial control systems: Applied in control systems that demand high precision and stability.
- Audio equipment: Used in high-fidelity audio systems to ensure minimal distortion and high signal integrity.
Q & A
- What is the input offset voltage of the OPA4277UAE4?
The input offset voltage of the OPA4277UAE4 is typically ±20 µV, with a maximum of ±50 µV.
- What is the input bias current of the OPA4277UAE4?
The input bias current is typically ±1.5 nA.
- What is the common-mode rejection ratio (CMRR) of the OPA4277UAE4?
The CMRR is typically 120 dB.
- What is the power supply rejection ratio (PSRR) of the OPA4277UAE4?
The PSRR is typically ±0.5 µV/V.
- What are the operating voltage ranges for the OPA4277UAE4?
The operating voltage range is from ±2 V to ±18 V.
- What is the short-circuit current (ISC) of the OPA4277UAE4?
The short-circuit current is typically ±35 mA.
- What is the open-loop output impedance (ZO) of the OPA4277UAE4?
The open-loop output impedance is typically 40 Ω at 1 MHz.
- What are the package options available for the OPA4277UAE4?
The OPA4277UAE4 is available in SOIC (14-pin) packages.
- Is the OPA4277UAE4 suitable for high-precision instrumentation?
Yes, it is highly suitable due to its ultralow offset voltage and drift, low bias current, and high CMRR and PSRR.
- Can the OPA4277UAE4 be used in medical devices?
Yes, it is often used in medical devices due to its high precision and reliability.
