Overview
The OP27GPZ, produced by Analog Devices Inc., is a precision operational amplifier known for its exceptional low noise, high speed, and precision characteristics. This amplifier combines the low offset and drift of the OP07 with high speed and low noise, making it ideal for precision instrumentation applications. It features a low input offset voltage, high gain-bandwidth product, and excellent dynamic accuracy, which are crucial for accurate high-gain amplification of low-level signals.
Key Specifications
| Parameter | Symbol | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS | VS = ±15 V, TA = 25°C | 10 | 25 | 30 | µV |
| Long-term VOS Stability | VOS/Time | TA = 25°C | 0.2 | 1.0 | 0.4 | µV/Month |
| Input Offset Current | IOS | VS = ±15 V, TA = 25°C | 7 | 35 | 12 | nA |
| Input Bias Current | IB | VS = ±15 V, TA = 25°C | ±10 | ±40 | ±15 | nA |
| Input Noise Voltage | en | f = 10 Hz, RS = 20 Ω | 3.5 | 5.5 | nV/√Hz | |
| Slew Rate | SR | RL ≥ 2 kΩ | 2.8 | V/µs | ||
| Gain Bandwidth Product | GBW | f = 100 kHz | 8 | MHz | ||
| Common Mode Rejection Ratio | CMRR | VCM = ±11 V | 126 | dB | ||
| Supply Voltage | VCC | ±22 | V | |||
| Operating Temperature Range | TA | −55 | 125 | °C |
Key Features
- Low Noise: The OP27 features a low equivalent input noise voltage of 3.5 nV/√Hz at 10 Hz, with a low 1/f noise corner frequency of 2.7 Hz, making it suitable for low-frequency applications.
- High Speed: It has a high slew rate of 2.8 V/µs and a gain bandwidth product of 8 MHz, providing excellent dynamic accuracy in high-speed data-acquisition systems.
- Precision: The amplifier offers low input offset voltage down to 25 µV and maximum drift of 0.6 µV/°C, ensuring high precision in instrumentation applications.
- Low Input Bias Current: The OP27 has a low input bias current of ±10 nA, achieved through a bias current cancellation circuit.
- High Gain and CMRR: It features high open-loop gain of 1.8 million and a common-mode rejection ratio of 126 dB at VCM of ±11 V.
Applications
- Precision Instrumentation: Ideal for applications requiring high precision and low noise, such as stable integrators, precision summing amplifiers, and precision voltage threshold detectors.
- Professional Audio: Suitable for professional audio circuits, including tape heads and microphone preamplifiers, due to its low output distortion and good load driving capability.
- Comparators and Detectors: Used in comparator and detector circuits where high accuracy and low noise are critical.
Q & A
- What is the typical input offset voltage of the OP27GPZ?
The typical input offset voltage of the OP27GPZ is 25 µV.
- What is the slew rate of the OP27GPZ?
The slew rate of the OP27GPZ is 2.8 V/µs.
- What is the gain bandwidth product of the OP27GPZ?
The gain bandwidth product of the OP27GPZ is 8 MHz.
- What is the common-mode rejection ratio (CMRR) of the OP27GPZ?
The CMRR of the OP27GPZ is 126 dB at VCM of ±11 V.
- What is the operating temperature range of the OP27GPZ?
The operating temperature range of the OP27GPZ is −55°C to 125°C.
- What are the typical applications of the OP27GPZ?
The OP27GPZ is typically used in precision instrumentation, professional audio circuits, comparators, and detectors.
- What is the input noise voltage of the OP27GPZ at 10 Hz?
The input noise voltage of the OP27GPZ at 10 Hz is 3.5 nV/√Hz.
- Does the OP27GPZ have a low input bias current?
Yes, the OP27GPZ has a low input bias current of ±10 nA.
- Is the OP27GPZ suitable for high-speed data-acquisition systems?
Yes, the OP27GPZ is suitable for high-speed data-acquisition systems due to its high slew rate and gain bandwidth product.
- What is the maximum supply voltage for the OP27GPZ?
The maximum supply voltage for the OP27GPZ is ±22 V.
