Overview
The OPA4227UA/2K5G4 is a quad 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 that require both AC and precision DC performance. They are available in SOIC (D) packages with 14 pins and operate over a temperature range of -40°C to 85°C.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOIC (D) with 14 pins |
| Operating Temperature Range | -40°C to 85°C |
| Noise | 3 nV/√Hz |
| Bandwidth (OPA227) | 8 MHz |
| Slew Rate (OPA227) | 2.3 V/µs |
| Bandwidth (OPA228) | 33 MHz |
| Slew Rate (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: 8 MHz for OPA227 and 33 MHz for OPA228
- High slew rates: 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 range: ±2.5 V to ±18 V
- Available in single, dual, and quad versions
Applications
The OPA4227UA/2K5G4 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, thanks to its low quiescent current and cost-effectiveness.
- Pin-for-pin replacements for industry-standard OP27 and OP37 operational amplifiers, offering substantial improvements.
Q & A
- What is the package type of the OPA4227UA/2K5G4?
The OPA4227UA/2K5G4 is available in a SOIC (D) package with 14 pins.
- What is the operating temperature range of the OPA4227UA/2K5G4?
The operating temperature range is -40°C to 85°C.
- What is the noise level of the OPA4227UA/2K5G4?
The noise level is 3 nV/√Hz.
- What are the bandwidth and slew rate for the OPA227 and OPA228?
The OPA227 has a bandwidth of 8 MHz and a slew rate of 2.3 V/µs. The OPA228 has a bandwidth of 33 MHz and a slew rate of 10 V/µs.
- What is the settling time of the OPA4227UA/2K5G4?
The settling time is 5 µs.
- What is the common-mode rejection ratio (CMRR) of the OPA4227UA/2K5G4?
The CMRR is 138 dB.
- What is the open-loop gain of the OPA4227UA/2K5G4?
The open-loop gain is 160 dB.
- What is the input bias current of the OPA4227UA/2K5G4?
The input bias current is 10 nA maximum.
- What is the offset voltage of the OPA4227UA/2K5G4?
The offset voltage is 75 µV maximum.
- What is the supply range of the OPA4227UA/2K5G4?
The supply range is ±2.5 V to ±18 V.
