Overview
The OP297EZ, produced by Analog Devices Inc., is a dual low bias current precision operational amplifier. It is the first dual op amp to integrate precision performance into the industry-standard 8-lead SOIC package. This amplifier combines low power consumption, extremely low input bias current, and high precision, making it versatile for various applications. The OP297EZ is ideal for use in battery-powered systems, instrumentation amplifiers, log amplifiers, and other precision analog circuits due to its low offset voltage, low drift, and high common-mode rejection ratio (CMRR).
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max |
|---|---|---|---|---|---|
| Input Offset Voltage | VOS | 25 μV | 50 μV | 100 μV | |
| Average Input Offset Voltage Drift | TCVOS | 0.2 μV/°C | 0.6 μV/°C | 2.0 μV/°C | |
| Input Offset Current | IOS | VCM = 0 V | 20 pA | 100 pA | 200 pA |
| Input Bias Current | IB | VCM = 0 V | 20 pA | 100 pA | 200 pA |
| Large Signal Voltage Gain | AVO | VOUT = ±10 V, RL = 2 kΩ | 1200 V/mV | 2500 V/mV | 3200 V/mV |
| Input Voltage Range | VCM | ±13 V | ±13.5 V | ||
| Supply Current (per amplifier) | ISY | 625 μA | |||
| Common-Mode Rejection Ratio | CMRR | 120 dB | |||
| Operating Temperature Range | TA | -40°C | +125°C |
Key Features
- Low Offset Voltage: Maximum of 50 μV, ensuring high precision in applications.
- Low Offset Voltage Drift: Maximum of 0.6 μV/°C, providing stability over temperature changes.
- Very Low Bias Current: Maximum of 100 pA, ideal for applications requiring minimal input current.
- High Open-Loop Gain: Minimum of 2000 V/mV, ensuring high linearity in every application.
- Low Supply Current: Maximum of 625 μA per amplifier, suitable for battery-powered systems.
- High Common-Mode Rejection Ratio (CMRR): Minimum of 120 dB, minimizing offset voltage changes.
- Wide Input Range: Operates from ±2 V to ±20 V supplies, with input voltage range extending to within 1 V of either rail.
- Low Noise Amplifier: Maximum noise voltage of 2.5 nV/√Hz, crucial for maintaining signal integrity.
- High-Speed Data Acquisition: Maximum rate of 100 kS/s, suitable for fast data transfer applications.
- Precision Timing and Voltage Reference: Precision timing and voltage reference with a drift of 1 ppm/°C, essential for precise applications.
- Fast Settling Time: Typical settling time of 10 µS, ensuring quick response times.
- Ultra-Low Distortion: Maximum distortion of 0.05%, suitable for audio and other applications requiring signal purity.
- Compact Package Size: 8-lead SOIC package, suitable for space-constrained applications..
Applications
- Strain Gage and Bridge Amplifiers: Ideal for high precision and stability in strain gage and bridge amplifier applications..
- High Stability Thermocouple Amplifiers: Suitable for thermocouple applications requiring high stability and low drift..
- Instrumentation Amplifiers: Used in various instrumentation applications such as data acquisition systems, medical equipment, and laboratory instruments.
- Photocurrent Monitors: Ideal for monitoring photocurrents due to its low bias current and high precision..
- High Gain Linearity Amplifiers: Ensures high linearity in applications requiring high gain amplification..
- Long-Term Integrators/Filters: Suitable for long-term integration and filtering applications due to its low drift and high precision..
- Sample-and-Hold Amplifiers: Ideal for sample-and-hold applications requiring low bias current and high precision..
- Peak Detectors and Logarithmic Amplifiers: Used in peak detection and logarithmic amplification due to its low bias current and high precision..
- Battery-Powered Systems: Suitable for battery-powered systems due to its low power consumption and low supply current.
- Medical Equipment: Used in various medical equipment applications such as patient monitoring systems, defibrillators, and ultrasound machines.
- Automotive Electronics: Suitable for automotive electronics applications such as anti-lock braking systems (ABS), traction control systems (TCS), and electronic stability programs (ESP).
- Industrial Automation: Used in various industrial automation applications such as process control systems, motor control systems, and power supplies..
Q & A
- Q: What is the maximum input offset voltage of the OP297EZ?
A: The maximum input offset voltage of the OP297EZ is 100 μV.
- Q: What is the typical input bias current of the OP297EZ?
A: The typical input bias current of the OP297EZ is 100 pA..
- Q: What is the common-mode rejection ratio (CMRR) of the OP297EZ?
A: The CMRR of the OP297EZ is a minimum of 120 dB..
- Q: What is the operating temperature range of the OP297EZ?
A: The operating temperature range of the OP297EZ is from -40°C to +125°C.
- Q: Can the OP297EZ handle high-speed data acquisition?
A: Yes, the OP297EZ can handle high-speed data acquisition with a maximum rate of 100 kS/s.
- Q: What is the typical settling time of the OP297EZ?
A: The typical settling time of the OP297EZ is 10 µS.
- Q: Is the OP297EZ suitable for precision instrumentation applications?
A: Yes, the OP297EZ is suitable for precision instrumentation applications such as data acquisition systems, medical equipment, and laboratory instruments..
- Q: What is the maximum supply voltage range for the OP297EZ?
A: The OP297EZ operates from ±2 V to ±20 V supplies..
- Q: Does the OP297EZ have low noise characteristics?
A: Yes, the OP297EZ has a maximum noise voltage of 2.5 nV/√Hz, ensuring low noise amplification.
- Q: Is the OP297EZ suitable for automotive electronics applications?
A: Yes, the OP297EZ is suitable for automotive electronics applications such as ABS, TCS, and ESP..
