Overview
The OPA2228U is a high precision, low noise operational amplifier produced by Texas Instruments. This dual operational amplifier is designed to offer excellent performance in both AC and precision DC applications. It is available in an 8-pin SOIC (D) package and operates over a wide temperature range of -40°C to 85°C. The OPA2228U is part of the OPAx228 series, which is known for its low noise, wide bandwidth, and high precision characteristics, making it an excellent choice for various professional and portable applications.
Key Specifications
| Specification | Description |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | OPA2228U |
| Package Type | SOIC (D) |
| Number of Pins | 8 |
| Bandwidth | 33 MHz |
| Common Mode Rejection Ratio (CMRR) | 120 dB |
| Dual Supply Voltage | ±2.5 V to ±18 V |
| Gain Bandwidth Product | 8 MHz |
| Input Bias Current | 10 nA |
| Input Offset Voltage (Vos) | 75 µV |
| Max Operating Temperature | 85 °C |
| Min Operating Temperature | -40 °C |
| Output Current per Channel | 45 mA |
| Power Supply Rejection Ratio (PSRR) | 126.02 dB |
| Slew Rate | 10 V/µs |
| Voltage Gain | 160 dB |
Key Features
- Low noise: 3 nV/√Hz
- Wide bandwidth: 33 MHz
- High Common Mode Rejection Ratio (CMRR): 120 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
- Fast settling time: 5 µs
- High slew rate: 10 V/µs
Applications
The OPA2228U is suitable for a variety of applications that require high precision and low noise, including:
- Professional audio equipment: Due to its high slew rate and wide bandwidth, it is ideal for audio applications requiring high fidelity and precision.
- Portable applications: The low quiescent current and low cost make it an excellent choice for battery-powered devices.
- Precision DC and AC applications: Its high CMRR and low offset voltage make it suitable for applications requiring both AC and precision DC performance.
Q & A
- What is the operating temperature range of the OPA2228U?
The OPA2228U operates over a temperature range of -40°C to 85°C.
- What is the bandwidth of the OPA2228U?
The bandwidth of the OPA2228U is 33 MHz.
- What is the input offset voltage (Vos) of the OPA2228U?
The input offset voltage (Vos) is 75 µV.
- What is the slew rate of the OPA2228U?
The slew rate of the OPA2228U is 10 V/µs.
- What is the common mode rejection ratio (CMRR) of the OPA2228U?
The CMRR of the OPA2228U is 120 dB.
- What is the maximum output current per channel of the OPA2228U?
The maximum output current per channel is 45 mA.
- What is the power supply rejection ratio (PSRR) of the OPA2228U?
The PSRR of the OPA2228U is 126.02 dB.
- Is the OPA2228U suitable for professional audio equipment?
Yes, the OPA2228U is suitable for professional audio equipment due to its high slew rate and wide bandwidth.
- What package type is the OPA2228U available in?
The OPA2228U is available in an 8-pin SOIC (D) package.
- What is the gain bandwidth product of the OPA2228U?
The gain bandwidth product of the OPA2228U is 8 MHz.
