Overview
The OPA4228UA/2K5 is a high precision, low noise operational amplifier produced by Texas Instruments. This quad operational amplifier is part of the OPAx227 and OPAx228 series, which are known for their excellent ac and precision dc performance. The OPA4228 is available in a 14-pin SOIC (D) package and is designed to offer superior performance in various applications, including professional audio equipment and portable devices requiring high precision.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 14-pin SOIC (D) |
| Operating Temperature Range | -55°C to 125°C |
| Supply Voltage Range | ±2.5 V to ±18 V |
| 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 |
| Quiescent Current (per amplifier) | ±3.7 mA to ±4.2 mA |
| Thermal Resistance (SO-14) | 100 °C/W |
Key Features
- Low noise: 3 nV/√Hz
- Wide bandwidth and high slew rate
- 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 OPA4228UA/2K5 is an excellent choice for various applications, including professional audio equipment, portable devices, and any system requiring high precision and low noise. It is also suitable for use in systems that need high ac and precision dc performance. Additionally, the dual and quad versions offer space savings and cost reduction per channel.
Q & A
- What is the package type of the OPA4228UA/2K5? The OPA4228UA/2K5 is packaged in a 14-pin SOIC (D) package.
- What is the operating temperature range of the OPA4228UA/2K5? The operating temperature range is -55°C to 125°C.
- What are the bandwidth and slew rate specifications of the OPA4228UA/2K5? 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 common-mode rejection ratio (CMRR) of the OPA4228UA/2K5? The CMRR is 138 dB.
- What is the open-loop gain of the OPA4228UA/2K5? The open-loop gain is 160 dB.
- What is the input bias current of the OPA4228UA/2K5? The input bias current is 10 nA maximum.
- What is the offset voltage of the OPA4228UA/2K5? The offset voltage is 75 µV maximum.
- What is the supply voltage range of the OPA4228UA/2K5? The supply voltage range is ±2.5 V to ±18 V.
- What are some typical applications of the OPA4228UA/2K5? Typical applications include professional audio equipment, portable devices, and systems requiring high precision and low noise.
- Is the OPA4228UA/2K5 a pin-for-pin replacement for other operational amplifiers? Yes, it is a pin-for-pin replacement for industry-standard OP27 and OP37 with substantial improvements.
