Overview
The OPA227U/2K5G4 is a high-precision, low-noise operational amplifier from Texas Instruments. It is part of the OPAx227 series, which combines low noise and wide bandwidth with high precision, making it an excellent choice for applications requiring both AC and precision DC performance. The OPA227 is unity-gain stable, featuring a high slew rate of 2.3 V/μs and a wide bandwidth of 8 MHz. This amplifier is designed to replace industry-standard op-amps like the OP27 and OP37, offering substantial improvements across various parameters.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Input Offset Voltage (VOS) | ±75 µV | µV |
| Input Offset Voltage Drift (dVOS/dT) | ±0.1 µV/°C | µV/°C |
| Open-Loop Gain (AOL) | 160 dB | dB |
| Common-Mode Rejection Ratio (CMRR) | 138 dB | dB |
| Input Bias Current | 10 nA | nA |
| Slew Rate | 2.3 V/μs | V/μs |
| Bandwidth | 8 MHz | MHz |
| Settling Time (G = 1, 10-V step, CL = 100 pF) | 5 µs | µs |
| Supply Range | ±2.5 V to ±18 V | V |
| Quiescent Current per Amplifier | ±3.8 mA | mA |
| Operating Temperature Range | –40°C to +85°C | °C |
| Package | SOIC-8 |
Key Features
- Low noise: 3 nV/√Hz
- Wide bandwidth: 8 MHz
- High slew rate: 2.3 V/μs
- High CMRR: 138 dB
- High open-loop gain: 160 dB
- Low input bias current: 10 nA maximum
- Low offset voltage: 75 µV maximum
- Wide supply range: ±2.5 V to ±18 V
- Single, dual, and quad versions available
- Low quiescent current and low cost, suitable for portable applications
- Pin-for-pin replacements for industry-standard OP27 and OP37 with substantial improvements
Applications
- Data acquisition (DAQ)
- Condition monitoring sensors
- Spectrum analyzers
- Professional audio equipment (rack mount)
- Industrial AC-DC applications
- Portable applications requiring high precision
Q & A
- What is the typical input offset voltage of the OPA227U/2K5G4?
The typical input offset voltage is ±75 µV.
- What is the slew rate of the OPA227U/2K5G4?
The slew rate is 2.3 V/μs.
- What is the bandwidth of the OPA227U/2K5G4?
The bandwidth is 8 MHz.
- What is the common-mode rejection ratio (CMRR) of the OPA227U/2K5G4?
The CMRR is 138 dB.
- What is the input bias current of the OPA227U/2K5G4?
The input bias current is 10 nA maximum.
- What is the supply range of the OPA227U/2K5G4?
The supply range is ±2.5 V to ±18 V.
- What are the available package options for the OPA227U/2K5G4?
The OPA227U/2K5G4 is available in SOIC-8 packages.
- What are some typical applications of the OPA227U/2K5G4?
Typical applications include data acquisition, condition monitoring sensors, spectrum analyzers, professional audio equipment, and industrial AC-DC applications.
- Is the OPA227U/2K5G4 suitable for portable applications?
Yes, it is suitable for portable applications due to its low quiescent current and low cost.
- Can the OPA227U/2K5G4 replace industry-standard op-amps like the OP27 and OP37?
Yes, it can replace these op-amps with substantial improvements across various parameters.
