Overview
The OP270EZ is a high-performance, monolithic, dual operational amplifier produced by Analog Devices Inc. It is known for its exceptionally low voltage noise density of 5 nV/√Hz at 1 kHz, making it suitable for applications requiring low noise and high precision. The OP270EZ offers comparable performance to the industry-standard OP27 but with several key improvements, including lower power consumption and excellent amplifier matching.
Key Specifications
| Parameter | Value |
|---|---|
| Voltage Noise Density | 5 nV/√Hz at 1 kHz (maximum) |
| Input Offset Voltage | 75 μV (maximum) |
| Offset Voltage Drift | 1 μV/°C (maximum) |
| Open-Loop Gain | 1,500,000 into a 10 kΩ load (minimum) |
| Input Bias Current | 20 nA (maximum) |
| Common-Mode Rejection Ratio (CMRR) | 106 dB (minimum) |
| Power Supply Rejection Ratio (PSRR) | 3.2 μV/V |
| Gain Bandwidth Product | 5 MHz (typical) |
| Slew Rate | 2.4 V/μs (typical) |
| Supply Voltage Range | ±4.5V to ±9V |
| Package Types | 8-Lead CERDIP, 8-Lead PDIP, 16-Lead SOIC |
Key Features
- Exceptionally low voltage noise density of 5 nV/√Hz at 1 kHz.
- Excellent input offset voltage and drift: 75 μV and 1 μV/°C, respectively.
- High open-loop gain of 1,500,000 into a 10 kΩ load.
- Low input bias current of less than 20 nA.
- High common-mode rejection ratio (CMRR) of greater than 106 dB.
- Unity-gain stable with a gain bandwidth product of 5 MHz and a slew rate of 2.4 V/μs.
- Lower power consumption compared to two OP27 devices.
- Excellent amplifier matching, suitable for multiple gain blocks, low noise instrumentation amplifiers, dual buffers, and low noise active filters.
Applications
The OP270EZ is versatile and can be used in various applications, including:
- Low noise instrumentation amplifiers.
- Dual buffers.
- Low noise active filters.
- Multiple gain blocks.
- Voltage and current noise measurements.
- Unity-gain buffer applications.
- Low phase error amplifiers.
- Audio equipment, such as five-band, low noise, stereo graphic equalizers.
Q & A
- What is the voltage noise density of the OP270EZ?
The voltage noise density of the OP270EZ is 5 nV/√Hz at 1 kHz. - What is the input offset voltage of the OP270EZ?
The input offset voltage of the OP270EZ is 75 μV (maximum). - What is the open-loop gain of the OP270EZ?
The open-loop gain of the OP270EZ is more than 1,500,000 into a 10 kΩ load. - What is the common-mode rejection ratio (CMRR) of the OP270EZ?
The CMRR of the OP270EZ is greater than 106 dB. - What is the gain bandwidth product of the OP270EZ?
The gain bandwidth product of the OP270EZ is 5 MHz (typical). - What are the typical package types for the OP270EZ?
The OP270EZ is available in 8-Lead CERDIP, 8-Lead PDIP, and 16-Lead SOIC packages. - Is the OP270EZ suitable for low noise applications?
Yes, the OP270EZ is highly suitable for low noise applications due to its exceptionally low voltage noise density and other low noise characteristics. - How does the power consumption of the OP270EZ compare to two OP27 devices?
The power consumption of the OP270EZ is one-third less than that of two OP27 devices. - What are some common applications of the OP270EZ?
The OP270EZ is commonly used in low noise instrumentation amplifiers, dual buffers, low noise active filters, and multiple gain blocks. - Is the OP270EZ unity-gain stable?
Yes, the OP270EZ is unity-gain stable with a slew rate of 2.4 V/μs.
