Overview
The OPA2228UA/2K5 is a dual, wide bandwidth, high precision, low noise operational amplifier produced by Texas Instruments. This component is part of the OPAx227 and OPAx228 series, which are known for their excellent ac and precision dc performance. The OPA2228 is specifically optimized for applications requiring high speed and precision, making it an excellent choice for professional audio equipment, data acquisition, and other high-performance applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (D) | - |
| Pins | 8 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Input Offset Voltage (VOS) | ±75 | µV |
| Input Bias Current (IB) | ±10 | nA |
| Common-Mode Rejection Ratio (CMRR) | 138 | dB |
| Open-Loop Gain (AOL) | 160 | dB |
| Bandwidth (GBW) | 33 MHz (OPA228) | - |
| Slew Rate (SR) | 10 V/µs (OPA228) | - |
| Settling Time | 5 µs | - |
| Supply Range | ±2.5 V to ±18 V | - |
| Quiescent Current per Amplifier (IQ) | ±3.7 mA | - |
Key Features
- Low noise: 3 nV/√Hz
- Wide bandwidth:
- OPA227: 8 MHz, 2.3 V/µs
- OPA228: 33 MHz, 10 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
- Single, dual, and quad versions available
- Settling time: 5 µs
Applications
- Professional audio equipment (rack mount)
- Data acquisition (DAQ)
- Condition monitoring sensors
- Spectrum analyzers
- Industrial AC-DC applications
- Portable applications requiring high precision
Q & A
- What is the operating temperature range of the OPA2228UA/2K5?
The operating temperature range is -40°C to 85°C.
- What is the typical input offset voltage of the OPA2228?
The typical input offset voltage is ±75 µV.
- What is the common-mode rejection ratio (CMRR) of the OPA2228?
The CMRR is 138 dB.
- What is the slew rate of the OPA228 version of this amplifier?
The slew rate is 10 V/µs.
- What is the bandwidth of the OPA228 version of this amplifier?
The bandwidth is 33 MHz.
- What is the settling time of the OPA2228?
The settling time is 5 µs.
- What is the supply voltage range for the OPA2228?
The supply voltage range is ±2.5 V to ±18 V.
- What are some typical applications for the OPA2228?
Typical applications include professional audio equipment, data acquisition, condition monitoring sensors, spectrum analyzers, and industrial AC-DC applications.
- Is the OPA2228 available in different package options?
- What is the quiescent current per amplifier for the OPA2228?
The quiescent current per amplifier is ±3.7 mA.
