Overview
The OP270GS is a high-performance, monolithic, dual operational amplifier produced by Analog Devices Inc. It is renowned for its exceptionally low voltage noise density of 5 nV/√Hz at 1 kHz, making it suitable for applications requiring high precision and low noise levels. The OP270GS offers comparable performance to the industry-standard OP27 but with several key improvements, including lower power consumption and excellent amplifier matching.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS | VS = ±15 V, TA = 25°C | 10 | 75 | 250 | μV |
| Average Input Offset Voltage Drift | TCVOS | -40°C ≤ TA ≤ 85°C | 0.2 | 1 | 3 | μV/°C |
| Input Offset Current | IOS | VCM = 0 V | 1 | 30 | 50 | nA |
| Input Bias Current | IB | VCM = 0 V | 5 | 60 | 80 | nA |
| Large-Signal Voltage Gain | AVO | VO = ±10 V, RL = 10 kΩ | 1000 | 1800 | 6000 | V/mV |
| Common-Mode Rejection Ratio (CMR) | 106 | dB | ||||
| Slew Rate | 2.4 | V/μs | ||||
| Gain-Bandwidth Product | 5 | MHz |
Key Features
- Very low voltage noise density of 5 nV/√Hz at 1 kHz maximum.
- Excellent input offset voltage of 75 μV maximum and low offset voltage drift of 1 μV/°C maximum.[
- Very high gain of 1500 V/mV minimum and outstanding CMR of 106 dB minimum.[
- Slew rate of 2.4 V/μs typical and gain-bandwidth product of 5 MHz typical.[
- Unity-gain stable and low power consumption, one-third less than two OP27 devices.[
- Excellent amplifier matching, suitable for multiple gain blocks, low noise instrumentation amplifiers, dual buffers, and low noise active filters.[
- Conforms to industry-standard 8-lead DIP pinouts and is pin-compatible with several other dual op amps.[
Applications
- Multiple gain blocks and low noise instrumentation amplifiers.[
- Dual buffers and low noise active filters.[
- Voltage and current noise measurements.[
- Unity-gain buffer applications and low phase error amplifiers.[
- Five-band, low noise, stereo graphic equalizers.[
- Power conscious applications due to its lower power consumption compared to two OP27 devices.[
Q & A
- What is the maximum voltage noise density of the OP270GS at 1 kHz?
The maximum voltage noise density of the OP270GS at 1 kHz is 5 nV/√Hz.
- What is the input offset voltage of the OP270GS?
The input offset voltage of the OP270GS is 75 μV maximum.[
- What is the slew rate of the OP270GS?
The slew rate of the OP270GS is 2.4 V/μs typical.[
- Is the OP270GS unity-gain stable?
Yes, the OP270GS is unity-gain stable with a gain-bandwidth product of 5 MHz.[
- What is the common-mode rejection ratio (CMR) of the OP270GS?
The CMR of the OP270GS is greater than 106 dB.[
- How does the power consumption of the OP270GS compare to two OP27 devices?
The power consumption of the OP270GS is one-third less than two OP27 devices.[
- What are some typical applications of the OP270GS?
The OP270GS is typically used in multiple gain blocks, low noise instrumentation amplifiers, dual buffers, and low noise active filters.[
- Is the OP270GS pin-compatible with other dual op amps?
Yes, the OP270GS is pin-compatible with several other dual op amps, including the MC1458, SE5532/A, RM4558, and HA5102.[
- What is the input bias current of the OP270GS?
The input bias current of the OP270GS is less than 20 nA.[
- What is the gain of the OP270GS into a 10 kΩ load?
The open-loop gain of the OP270GS into a 10 kΩ load is more than 1,500,000.[
