Overview
The OPA2227U/2K5 is a dual high-precision, low-noise operational amplifier produced by Texas Instruments. This component is part of the OPAx227 and OPAx228 series, which are known for combining low noise and wide bandwidth with high precision. These operational amplifiers are designed to excel in applications requiring both AC and precision DC performance. They are unity-gain stable, feature high slew rates, and offer substantial improvements over industry-standard OP27 and OP37 op amps.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOIC (D) with 8 pins |
| Operating Temperature Range (°C) | -40 to 85 |
| Noise | 3 nV/√Hz |
| Bandwidth | OPA227: 8 MHz, OPA228: 33 MHz |
| Slew Rate | OPA227: 2.3 V/µs, OPA228: 10 V/µs |
| Settling Time | 5 µs |
| CMRR | 138 dB |
| Open-Loop Gain | 160 dB |
| Input Bias Current | 10 nA maximum |
| Offset Voltage | 75 µV maximum |
| Supply Range | ±2.5 V to ±18 V |
Key Features
- Low noise: 3 nV/√Hz
- Wide bandwidth: OPA227 - 8 MHz, OPA228 - 33 MHz
- High slew rate: OPA227 - 2.3 V/µs, OPA228 - 10 V/µs
- 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 range: ±2.5 V to ±18 V
- Available in single, dual, and quad versions
Applications
The OPA2227U/2K5 is an excellent choice for various applications, including:
- Professional audio equipment due to its low noise and high precision.
- Portable applications requiring high precision, thanks to its low quiescent current and cost-effectiveness.
- Pin-for-pin replacements for industry-standard OP27 and OP37 op amps, offering substantial improvements.
Q & A
- What is the package type of the OPA2227U/2K5?
The OPA2227U/2K5 comes in an SOIC (D) package with 8 pins.
- What is the operating temperature range of the OPA2227U/2K5?
The operating temperature range is from -40°C to 85°C.
- What is the noise level of the OPA2227U/2K5?
The noise level is 3 nV/√Hz.
- What are the bandwidth and slew rate of the OPA227 and OPA228?
The OPA227 has a bandwidth of 8 MHz and a slew rate of 2.3 V/µs, while the OPA228 has a bandwidth of 33 MHz and a slew rate of 10 V/µs.
- What is the settling time of the OPA2227U/2K5?
The settling time is 5 µs.
- What is the common-mode rejection ratio (CMRR) of the OPA2227U/2K5?
The CMRR is 138 dB.
- What is the open-loop gain of the OPA2227U/2K5?
The open-loop gain is 160 dB.
- What is the input bias current of the OPA2227U/2K5?
The input bias current is 10 nA maximum.
- What is the offset voltage of the OPA2227U/2K5?
The offset voltage is 75 µV maximum.
- What are the typical applications of the OPA2227U/2K5?
The OPA2227U/2K5 is typically used in professional audio equipment, portable applications, and as pin-for-pin replacements for OP27 and OP37 op amps.
