Overview
The OP497GSZ is a quad operational amplifier produced by Analog Devices Inc., known for its precision performance and low power consumption. This device is packaged in a 16-lead SOIC (Small Outline Integrated Circuit) package, making it space-efficient while maintaining high performance. The OP497 combines exceptional precision with extremely low input bias current, making it suitable for a wide range of applications. It features a superbeta input stage with bias current cancellation, ensuring picoampere bias currents across all temperatures.
Key Specifications
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | TA = 25°C, VS = ±15 V | 40 | 75 | 80 | μV |
| Average Input Offset Voltage Drift | TCVOS | TMIN − TMAX | 0.4 | 1.0 | 1.5 | μV/°C |
| Input Bias Current | IB | VCM = 0 V, −40°C ≤ TA ≤ +85°C | 60 | 150 | 200 | pA |
| Open-Loop Gain | TA = 25°C, VS = ±15 V | 2000 | V/mV | |||
| Supply Current (per amplifier) | TA = 25°C, VS = ±15 V | 625 | μA | |||
| Common-Mode Rejection Ratio | TA = 25°C, VS = ±15 V | 114 | dB | |||
| Power Supply Rejection Ratio | TA = 25°C, VS = ±15 V | 120 | dB |
Key Features
- Low Offset Voltage: Maximum of 75 μV and low drift of 1.0 μV/°C.
- Low Input Bias Current: 150 pA maximum at 25°C and 300 pA maximum over the temperature range of −40°C to +85°C.
- High Open-Loop Gain: Minimum of 2000 V/mV, ensuring high linearity in applications.
- Low Supply Current: Maximum of 625 μA per amplifier.
- High Common-Mode Rejection Ratio (CMRR): Minimum of 114 dB.
- High Power Supply Rejection Ratio (PSRR): Greater than 120 dB.
- Superbeta Input Stage with Bias Current Cancellation: Maintains picoampere bias currents at all temperatures.
- Operational Range: Operates from ±2 V to ±20 V supplies.
Applications
- Strain Gage and Bridge Amplifiers: High precision and stability make it ideal for these applications.
- High Stability Thermocouple Amplifiers: Ensures accurate temperature measurements.
- Instrumentation Amplifiers: Suitable for precision measurement and signal conditioning.
- Photocurrent Monitors: Low bias current is beneficial for photodiode preamplifiers.
- High Gain Linearity Amplifiers: High open-loop gain ensures high linearity in closed-loop applications.
- Long-Term Integrators/Filters: Precision and stability are crucial for these applications.
- Sample-and-Hold Amplifiers: Low offset and drift are essential for accurate sampling.
- Peak Detectors and Logarithmic Amplifiers: High precision and low bias current are advantageous.
- Battery-Powered Systems: Low power consumption makes it suitable for battery-powered devices.
Q & A
- What is the maximum offset voltage of the OP497GSZ?
The maximum offset voltage is 75 μV.
- What is the typical input bias current of the OP497GSZ at 25°C?
The typical input bias current is 150 pA.
- What is the minimum open-loop gain of the OP497GSZ?
The minimum open-loop gain is 2000 V/mV.
- What is the common-mode rejection ratio (CMRR) of the OP497GSZ?
The CMRR is greater than 114 dB.
- What is the power supply rejection ratio (PSRR) of the OP497GSZ?
The PSRR is greater than 120 dB.
- What is the operational voltage range of the OP497GSZ?
The OP497GSZ operates from ±2 V to ±20 V supplies.
- What package type is the OP497GSZ available in?
The OP497GSZ is available in a 16-lead SOIC package.
- What are some common applications of the OP497GSZ?
Common applications include strain gage and bridge amplifiers, high stability thermocouple amplifiers, instrumentation amplifiers, and more.
- Is the OP497GSZ suitable for battery-powered systems?
Yes, it is suitable due to its low power consumption.
- What is the typical supply current per amplifier for the OP497GSZ?
The typical supply current per amplifier is 625 μA.
