Overview
The OPA227U/2K5 is a high-precision, low-noise operational amplifier produced by Texas Instruments. This device is part of the OPAx227 series, known for its excellent combination of low noise, wide bandwidth, and high precision. It is particularly suited for applications requiring both AC and precision DC performance. The OPA227U/2K5 is available in an 8-pin SOIC package and is a pin-for-pin replacement for industry-standard OP27 and OP37 operational amplifiers, offering substantial improvements across various parameters.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Offset Voltage (VOS) | ±5 | ±75 | ±100 | µV |
| Input Offset Voltage Drift (dVOS/dT) | ±0.1 | µV/°C | ||
| Common-Mode Rejection Ratio (CMRR) | 120 | 138 | dB | |
| Open-Loop Gain (AOL) | 132 | 160 | dB | |
| Input Bias Current | 10 | nA | ||
| Slew Rate | 2.3 | V/µs | ||
| Bandwidth | 8 | MHz | ||
| Settling Time (to 0.1%) | 5 | µs | ||
| Supply Voltage Range | ±2.5 | ±18 | V | |
| Operating Temperature Range | -40 | 85 | °C | |
| Package Type | 8-pin SOIC |
Key Features
- Low noise: 3 nV/√Hz
- Wide bandwidth: 8 MHz
- High slew rate: 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 voltage range: ±2.5 V to ±18 V
- Low quiescent current
- Pin-for-pin replacement for industry-standard OP27 and OP37
Applications
- Data acquisition (DAQ)
- Condition monitoring sensors
- Spectrum analyzers
- Professional audio amplifiers (rack mount)
- Industrial AC-DC applications
- Portable applications requiring high precision
Q & A
- What is the input offset voltage of the OPA227U/2K5?
The input offset voltage of the OPA227U/2K5 is typically ±75 µV, with a maximum of ±100 µV.
- What is the common-mode rejection ratio (CMRR) of the OPA227U/2K5?
The CMRR of the OPA227U/2K5 is typically 138 dB.
- What is the slew rate of the OPA227U/2K5?
The slew rate of the OPA227U/2K5 is 2.3 V/µs.
- What is the bandwidth of the OPA227U/2K5?
The bandwidth of the OPA227U/2K5 is 8 MHz.
- What is the supply voltage range for the OPA227U/2K5?
The supply voltage range for the OPA227U/2K5 is ±2.5 V to ±18 V.
- What is the operating temperature range for the OPA227U/2K5?
The operating temperature range for the OPA227U/2K5 is -40°C to 85°C.
- In what package is the OPA227U/2K5 available?
The OPA227U/2K5 is available in an 8-pin SOIC package.
- What are some typical applications for the OPA227U/2K5?
Typical applications include data acquisition, condition monitoring sensors, spectrum analyzers, professional audio amplifiers, and industrial AC-DC applications.
- Is the OPA227U/2K5 a pin-for-pin replacement for any other operational amplifiers?
Yes, the OPA227U/2K5 is a pin-for-pin replacement for industry-standard OP27 and OP37 operational amplifiers.
- What are the key advantages of using the OPA227U/2K5?
The key advantages include low noise, wide bandwidth, high precision, low input bias current, and low offset voltage, making it suitable for applications requiring both AC and precision DC performance.
