Overview
The OP270GPZ 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 maximum at 1 kHz. This dual op-amp offers comparable performance to the industry-standard OP27, with an input offset voltage of less than 75 μV and an offset drift of less than 1 μV/°C, guaranteed over the full military temperature range. The OP270GPZ is unity-gain stable, features a gain bandwidth product of 5 MHz, and has a slew rate of 2.4 V/μs, making it suitable for a wide range of precision applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Voltage Noise Density | 5 nV/√Hz (max at 1 kHz) | nV/√Hz |
| Input Offset Voltage | 75 μV (max) | μV |
| Offset Voltage Drift | 1 μV/°C (max) | μV/°C |
| Open-Loop Gain | 1,500,000 (min into a 10 kΩ load) | V/mV |
| Input Bias Current | 20 nA (max) | nA |
| Common-Mode Rejection Ratio (CMRR) | 106 dB (min) | dB |
| Power Supply Rejection Ratio (PSRR) | 3.2 μV/V (max) | μV/V |
| Gain Bandwidth Product | 5 MHz (typical) | MHz |
| Slew Rate | 2.4 V/μs (typical) | V/μs |
Key Features
- Exceptionally low voltage noise density of 5 nV/√Hz at 1 kHz.
- Low input offset voltage and drift.
- High open-loop gain and common-mode rejection ratio.
- Low input bias current.
- Unity-gain stable with a gain bandwidth product of 5 MHz.
- Excellent amplifier matching, suitable for multiple gain blocks, low noise instrumentation amplifiers, dual buffers, and low noise active filters.
- Pin compatible with industry-standard 8-lead DIP pinout and other dual op-amps like MC1458, SE5532/A, RM4558, and HA5102.
Applications
- Low noise instrumentation amplifiers.
- Dual buffers.
- Low noise active filters.
- Multiple gain blocks.
- Voltage and current noise sensitive applications.
- Digital panning control and programmable gain amplifiers when combined with DACs like the DAC8221.
- Audio and audio processing systems due to its low noise and high signal-to-noise ratio.
Q & A
- What is the voltage noise density of the OP270GPZ? The voltage noise density of the OP270GPZ is 5 nV/√Hz maximum at 1 kHz.
- What is the input offset voltage of the OP270GPZ? The input offset voltage is less than 75 μV.
- What is the slew rate of the OP270GPZ? The slew rate is 2.4 V/μs typical.
- Is the OP270GPZ unity-gain stable? Yes, the OP270GPZ is unity-gain stable.
- What is the gain bandwidth product of the OP270GPZ? The gain bandwidth product is 5 MHz typical.
- What are some common applications of the OP270GPZ? Common applications include low noise instrumentation amplifiers, dual buffers, low noise active filters, and multiple gain blocks.
- Is the OP270GPZ pin compatible with other dual op-amps? Yes, it is pin compatible with industry-standard 8-lead DIP pinout and other dual op-amps like MC1458, SE5532/A, RM4558, and HA5102.
- How does the OP270GPZ perform in terms of power consumption? The OP270GPZ consumes one-third less power than two OP27 devices.
- What is the common-mode rejection ratio (CMRR) of the OP270GPZ? The CMRR is greater than 106 dB.
- Can the OP270GPZ be used in high-speed applications? For higher speed applications, the OP271 or ADA4004-2 are recommended.
