Overview
The OPA2227UAE4 is a high-precision, low-noise operational amplifier produced by Texas Instruments. This device 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 OPA2227 is unity-gain stable, featuring a high slew rate of 2.3 V/μs and a wide bandwidth of 8 MHz. It is designed to replace industry-standard OP27 amplifiers with substantial improvements across various parameters.
The OPA2227UAE4 is available in an SOIC-8 package and operates over a temperature range of –40°C to +85°C, with extended temperature ranges available for certain models. Its low quiescent current and low cost make it suitable for portable applications requiring high precision.
Key Specifications
| Parameter | Typical Value | Maximum Value | Unit |
|---|---|---|---|
| Input Offset Voltage (VOS) | ±75 µV | ±100 µV | µV |
| Input Offset Voltage Drift (dVOS/dT) | ±0.1 µV/°C | ±0.6 µV/°C | µV/°C |
| Common-Mode Rejection Ratio (CMRR) | 138 dB | - | dB |
| Open-Loop Gain (AOL) | 160 dB | - | dB |
| Input Bias Current (IB) | ±10 nA | ±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 (to 0.1%) | - | µs |
| Quiescent Current per Amplifier (IQ) | ±3.7 mA | ±4.2 mA | mA |
| Supply Voltage Range | ±2.5 V to ±18 V | - | V |
Key Features
- Low noise: 3 nV/√Hz
- Wide bandwidth: 8 MHz, slew rate of 2.3 V/μs
- High common-mode rejection ratio (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
- Available in single, dual, and quad versions
- Low quiescent current and low cost, suitable for portable applications
- Pin-for-pin replacement for industry-standard OP27 with substantial improvements
Applications
- Data acquisition (DAQ)
- Condition monitoring sensors
- Spectrum analyzers
- Professional audio equipment (rack mount)
- Industrial AC-DC applications
- Telecom equipment
- Geophysical and vibration analysis
- Spectral analysis
- Active filters
- Power supply control
Q & A
- What is the typical input offset voltage of the OPA2227UAE4?
The typical input offset voltage is ±75 µV.
- What is the common-mode rejection ratio (CMRR) of the OPA2227UAE4?
The CMRR is 138 dB.
- What is the slew rate of the OPA2227UAE4?
The slew rate is 2.3 V/μs.
- What is the bandwidth of the OPA2227UAE4?
The bandwidth is 8 MHz.
- What is the settling time for a 10-V step with a 100 pF load?
The settling time is 5 µs to 0.1%.
- What is the quiescent current per amplifier for the OPA2227UAE4?
The quiescent current per amplifier is ±3.7 mA.
- What is the supply voltage range for the OPA2227UAE4?
The supply voltage range is ±2.5 V to ±18 V.
- In what package is the OPA2227UAE4 available?
The OPA2227UAE4 is available in an SOIC-8 package.
- What are some common applications for the OPA2227UAE4?
Common applications include data acquisition, condition monitoring sensors, spectrum analyzers, professional audio equipment, and industrial AC-DC applications.
- Is the OPA2227UAE4 a replacement for any industry-standard operational amplifiers?
Yes, it is a pin-for-pin replacement for the industry-standard OP27 with substantial improvements.
