Overview
The OP27GSZ is a precision operational amplifier produced by Analog Devices Inc. It combines the low offset and drift characteristics of the OP07 with high speed and low noise performance. This amplifier is ideal for precision instrumentation applications, offering offsets down to 25 µV and a maximum drift of 0.6 µV/°C. The OP27GSZ features a low noise voltage density of 3.5 nV/√Hz at 10 Hz, a high gain bandwidth product of 8 MHz, and a slew rate of 2.8 V/µs, making it suitable for high-speed data-acquisition systems and professional audio applications.
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 | 0.2 | 1.0 | 0.4 | µV/MO | |
| 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 | fO = 10 Hz | 3.5 | 5.5 | 3.8 | nV/√Hz |
| Slew Rate | SR | RL ≥ 2 kΩ | 2.8 | V/µs | ||
| Gain Bandwidth Product | GBW | 8 | MHz | |||
| Supply Voltage | VS | ±15 | ±22 | V |
Key Features
- Low input offset voltage down to 25 µV and maximum drift of 0.6 µV/°C.
- High speed with a slew rate of 2.8 V/µs and a gain bandwidth product of 8 MHz.
- Low noise voltage density of 3.5 nV/√Hz at 10 Hz and a low 1/f noise corner frequency of 2.7 Hz.
- High open-loop gain of 1.8 million and excellent common-mode rejection ratio (CMRR) of 126 dB.
- Low input bias current of ±10 nA and input noise current density of 1.7 pA/√Hz at 10 Hz.
- Good load driving capability with a guaranteed swing of ±10 V into 600 Ω and low output distortion.
Applications
- Precision instrumentation applications such as stable integrators, precision summing amplifiers, and precision voltage threshold detectors.
- Professional audio circuits including tape heads and microphone preamplifiers due to its low noise and high gain accuracy.
- High-speed data-acquisition systems where dynamic accuracy is crucial.
- Comparators and other precision amplification needs where low drift and high accuracy are required.
Q & A
- What is the typical input offset voltage of the OP27GSZ?
The typical input offset voltage of the OP27GSZ is 25 µV.
- What is the slew rate of the OP27GSZ?
The slew rate of the OP27GSZ is 2.8 V/µs.
- What is the gain bandwidth product of the OP27GSZ?
The gain bandwidth product of the OP27GSZ is 8 MHz.
- What is the maximum supply voltage for the OP27GSZ?
The maximum supply voltage for the OP27GSZ is ±22 V.
- What are some typical applications of the OP27GSZ?
The OP27GSZ is typically used in precision instrumentation, professional audio circuits, and high-speed data-acquisition systems.
- What is the common-mode rejection ratio (CMRR) of the OP27GSZ?
The CMRR of the OP27GSZ is 126 dB at VCM of ±11 V.
- How does the OP27GSZ handle long-term stability?
The OP27GSZ has a long-term VOS stability of 0.2 µV/month.
- What is the input noise voltage density of the OP27GSZ at 10 Hz?
The input noise voltage density of the OP27GSZ at 10 Hz is 3.5 nV/√Hz.
- Is the OP27GSZ suitable for professional audio applications?
Yes, the OP27GSZ is suitable for professional audio applications due to its low noise and high gain accuracy, as well as its good load driving capability and low output distortion.
- What is the input bias current of the OP27GSZ?
The input bias current of the OP27GSZ is typically ±10 nA.
