Overview
The OP27GJ is a low-noise, 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, making it ideal for precision instrumentation applications. The OP27GJ is known for its exceptional performance in amplifying low-level signals with high accuracy and dynamic accuracy.
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/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 | fO = 10 Hz | 3.5 | 5.5 | 3.8 | nV/√Hz |
| Slew Rate | SR | RL ≥ 2 kΩ | 2.8 | 2.8 | 2.8 | V/µs |
| Gain Bandwidth Product | GBW | 8 | 8 | 8 | MHz | |
| Common-Mode Rejection Ratio | CMRR | VCM = ±10 V | 110 | 124 | 102 | dB |
Key Features
- Low noise: 3.5 nV/√Hz at 10 Hz, with a low 1/f noise corner frequency of 2.7 Hz.
- Low drift: 0.2 µV/°C, with long-term stability of 0.2 µV/month.
- High speed: 2.8 V/µs slew rate and 8 MHz gain bandwidth product.
- Low input bias current: ±10 nA, achieved through bias current cancellation circuit.
- High open-loop gain: 1.8 million.
- Excellent common-mode rejection ratio (CMRR): 126 dB at VCM of ±11 V.
- Good load driving capability with a guaranteed swing of ±10 V into 600 Ω.
- Available in various packages, including 8-Lead TO-99 (J-Suffix) and 8-Lead Hermetic DIP (Z-Suffix).
Applications
- Precision instrumentation applications.
- Stable integrators and precision summing amplifiers.
- Precision voltage threshold detectors and comparators.
- Professional audio circuits, such as tape heads and microphone preamplifiers.
- High-speed data-acquisition systems.
Q & A
- What is the typical input offset voltage of the OP27GJ?
The typical input offset voltage is 25 µV.
- What is the slew rate of the OP27GJ?
The slew rate is 2.8 V/µs.
- What is the gain bandwidth product of the OP27GJ?
The gain bandwidth product is 8 MHz.
- What is the common-mode rejection ratio (CMRR) of the OP27GJ?
The CMRR is 126 dB at VCM of ±11 V.
- What are the typical operating temperature ranges for the OP27GJ?
The operating temperature ranges are –40°C to +85°C for the OP27GJ.
- What is the input noise voltage of the OP27GJ at 10 Hz?
The input noise voltage is 3.5 nV/√Hz at 10 Hz.
- What is the input bias current of the OP27GJ?
The input bias current is ±10 nA.
- What are some common applications of the OP27GJ?
Common applications include precision instrumentation, stable integrators, precision summing amplifiers, and professional audio circuits.
- Is the OP27GJ available in different packages?
Yes, it is available in various packages, including 8-Lead TO-99 (J-Suffix) and 8-Lead Hermetic DIP (Z-Suffix).
- What is the long-term VOS stability of the OP27GJ?
The long-term VOS stability is 0.2 µV/month.
