Overview
The OP297FPZ, produced by Analog Devices Inc., is a dual low bias current precision operational amplifier. It is distinguished by its combination of precision performance, low power consumption, and extremely low input bias current. This makes the OP297FPZ ideal for a wide range of applications requiring high accuracy and low power usage. The device is packaged in an industry-standard 8-lead SOIC package, making it space-efficient while maintaining high performance.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS | VS = ±15 V, −40°C ≤ TA ≤ +85°C | 35 | 100 | 400 | μV |
| Average Input Offset Voltage Drift | TCVOS | −40°C ≤ TA ≤ +85°C | 0.2 | 0.6 | 2.0 | μV/°C |
| Input Offset Current | IOS | VCM = 0 V | 50 | 450 | 750 | pA |
| Input Bias Current | IB | VCM = 0 V | +50 | ±450 | ±750 | pA |
| Large Signal Voltage Gain | AVO | VOUT = ±10 V, RL = 2 kΩ | 1200 | 3200 | 2500 | V/mV |
| Input Voltage Range | VCM | VS = ±15 V | ±13 | ±13.5 | V | |
| Supply Current (per amplifier) | VS = ±15 V | 625 | 625 | μA | ||
| Operating Temperature Range | −40°C | +85°C | °C |
Key Features
- Very low input bias current: 100 pA maximum, ensuring minimal current draw from the input signal.
- High open-loop gain: 2000 V/mV minimum, providing high linearity in applications.
- Low supply current: 625 μA maximum per amplifier, suitable for battery-powered systems.
- High common-mode rejection: 120 dB minimum, reducing errors due to common-mode signals.
- Low offset voltage and drift: Less than 50 μV and 0.6 μV/°C, respectively, for high precision.
- Operates from ±2 V to ±20 V supplies, offering flexibility in power supply configurations.
Applications
- Strain gage and bridge amplifiers.
- High stability thermocouple amplifiers.
- Instrumentation amplifiers.
- Photocurrent monitors.
- High gain linearity amplifiers.
- Long-term integrators/filters.
- Sample-and-hold amplifiers.
- Peak detectors.
- Logarithmic amplifiers.
- Battery-powered systems.
Q & A
- What is the maximum input bias current of the OP297FPZ?
The maximum input bias current of the OP297FPZ is 100 pA. - What is the typical supply current per amplifier for the OP297FPZ?
The typical supply current per amplifier is 625 μA. - What is the operating temperature range of the OP297FPZ?
The operating temperature range is −40°C to +85°C. - What is the common-mode rejection ratio (CMRR) of the OP297FPZ?
The CMRR is 120 dB minimum. - What are the typical applications of the OP297FPZ?
The OP297FPZ is used in strain gage and bridge amplifiers, thermocouple amplifiers, instrumentation amplifiers, and other precision applications. - What is the maximum input offset voltage of the OP297FPZ?
The maximum input offset voltage is 400 μV. - How does the OP297FPZ handle high temperatures in terms of bias current?
The OP297FPZ maintains picoamp bias currents at all temperatures due to its super-beta input stage with bias current cancellation. - What is the package type of the OP297FPZ?
The OP297FPZ is packaged in an 8-lead SOIC package. - What is the large signal voltage gain of the OP297FPZ?
The large signal voltage gain is 1200 V/mV minimum. - Is the OP297FPZ suitable for battery-powered systems?
Yes, the OP297FPZ is suitable for battery-powered systems due to its low supply current and high common-mode rejection.
