Overview
The OP27AZ is a low-noise, precision operational amplifier manufactured by Analog Devices Inc. This component combines the low offset and drift characteristics of the OP07 with high speed and low noise, making it ideal for precision instrumentation applications. The OP27AZ offers excellent performance in amplifying low-level signals, featuring low noise, high accuracy, and high speed.
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 | VS = ±15 V, TA = 25°C | 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 | 2.8 | V/µs | ||||
| Gain Bandwidth Product | 8 | MHz | ||||
| Supply Voltage | ±4 | ±18 | V | |||
| Operating Temperature | -55 | 125 | °C | |||
| Package | 8-CDIP (0.300", 7.62mm) |
Key Features
- Low noise: 80 nV p-p (0.1 Hz to 10 Hz), 3 nV/√Hz at 10 Hz
- Low drift: 0.2 µV/°C, long-term stability of 0.2 µV/month
- High speed: 2.8 V/µs slew rate, 8 MHz gain bandwidth product
- Low input bias current: ±10 nA
- High open-loop gain: 1.8 million
- Low input noise voltage density
- Good load driving capability: ±10 V into 600 Ω
- Available in various packages including 8-CDIP
Applications
- Precision instrumentation
- Stable integrators
- Precision summing amplifiers
- Precision voltage threshold detectors
- Comparators
- Professional audio circuits such as tape heads and microphone preamplifiers
Q & A
- What is the typical input offset voltage of the OP27AZ?
The typical input offset voltage of the OP27AZ is 25 µV.
- What is the slew rate of the OP27AZ?
The slew rate of the OP27AZ is 2.8 V/µs.
- What is the gain bandwidth product of the OP27AZ?
The gain bandwidth product of the OP27AZ is 8 MHz.
- What is the input bias current of the OP27AZ?
The input bias current of the OP27AZ is typically ±10 nA.
- What are the operating temperature ranges for the OP27AZ?
The operating temperature range for the OP27AZ is -55°C to 125°C.
- What package types are available for the OP27AZ?
The OP27AZ is available in an 8-CDIP (0.300", 7.62mm) package among others.
- What are some typical applications of the OP27AZ?
The OP27AZ is typically used in precision instrumentation, stable integrators, precision summing amplifiers, and professional audio circuits.
- How does the OP27AZ handle noise?
The OP27AZ has low noise characteristics with an input noise voltage density of 3.5 nV/√Hz at 10 Hz and a low 1/f noise corner frequency of 2.7 Hz.
- What is the supply voltage range for the OP27AZ?
The supply voltage range for the OP27AZ is ±4 V to ±18 V.
- Is the OP27AZ suitable for high-speed applications?
Yes, the OP27AZ is suitable for high-speed applications due to its high slew rate and gain bandwidth product.
