Overview
The OPA2227U/2K5E4 is a high-precision, low-noise operational amplifier from Texas Instruments. It belongs to 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.
This operational amplifier is particularly suited for professional audio equipment and portable applications due to its low quiescent current and cost-effectiveness. The OPAx227 series is also a pin-for-pin replacement for industry-standard OP27 and OP37 op amps, offering substantial improvements across various parameters.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOIC (D) - 8 Pins |
| Operating Temperature Range | -40°C to 85°C |
| Noise | 3 nV/√Hz |
| Bandwidth | 8 MHz (OPA227), 33 MHz (OPA228) |
| Slew Rate | 2.3 V/µs (OPA227), 10 V/µs (OPA228) |
| Settling Time | 5 µs |
| CMRR | 138 dB |
| Open-Loop Gain | 160 dB |
| Input Bias Current | 10 nA maximum |
| Offset Voltage | 75 µV maximum |
| Supply Voltage Range | ±2.5 V to ±18 V |
Key Features
- Low noise: 3 nV/√Hz
- Wide bandwidth: 8 MHz for OPA227 and 33 MHz for OPA228
- High slew rate: 2.3 V/µs for OPA227 and 10 V/µs for OPA228
- Fast settling time: 5 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
- Available in single, dual, and quad versions
Applications
The OPA2227U/2K5E4 is an excellent choice for various applications, including:
- Professional audio equipment due to its high precision and low noise characteristics.
- Portable applications requiring high precision, such as medical devices and battery-powered equipment, due to its low quiescent current and cost-effectiveness.
- General-purpose analog circuits where high accuracy and stability are required.
Q & A
- What is the noise level of the OPA2227U/2K5E4?
The noise level is 3 nV/√Hz.
- What are the bandwidth and slew rate of the OPA227?
The bandwidth is 8 MHz, and the slew rate is 2.3 V/µs.
- What is the settling time of the OPA2227U/2K5E4?
The settling time is 5 µs.
- What is the common-mode rejection ratio (CMRR) of the OPA2227U/2K5E4?
The CMRR is 138 dB.
- What is the open-loop gain of the OPA2227U/2K5E4?
The open-loop gain is 160 dB.
- What is the input bias current of the OPA2227U/2K5E4?
The input bias current is 10 nA maximum.
- What is the offset voltage of the OPA2227U/2K5E4?
The offset voltage is 75 µV maximum.
- What is the supply voltage range of the OPA2227U/2K5E4?
The supply voltage range is ±2.5 V to ±18 V.
- In what packages is the OPA2227U/2K5E4 available?
The OPA2227U/2K5E4 is available in DIP-8 and SO-8 packages.
- What are some common applications of the OPA2227U/2K5E4?
Common applications include professional audio equipment, portable applications, and general-purpose analog circuits.
