Overview
The OP97FSZ-REEL is a low power, high precision operational amplifier produced by Analog Devices Inc. It is designed as a low power alternative to the industry-standard OP07 precision amplifier, offering significant improvements in several key areas. The OP97 maintains the high performance standards set by the OP07 while utilizing only 600 μA of supply current, which is less than one-sixth of the OP07's supply current. This makes it an ideal choice for portable and battery-powered instruments. The amplifier features an ultralow offset voltage and drift, high common-mode rejection, and excellent power supply rejection, making it suitable for precision applications over a wide temperature range.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS | - | 25 | 60 | 200 | μV |
| Average Temperature Coefficient of VOS | TCVOS | - | 0.2 | 0.6 | 2.0 | μV/°C |
| Input Offset Current | IOS | - | 60 | 250 | 750 | pA |
| Average Temperature Coefficient of IOS | TCIOS | - | 0.4 | 2.5 | 7.5 | pA/°C |
| Input Bias Current | IB | - | ±60 | ±250 | ±750 | pA |
| Average Temperature Coefficient of IB | TCIB | - | 0.4 | 2.5 | 7.5 | pA/°C |
| Large Signal Voltage Gain | AVO | VO = 10 V; RL = 2 kΩ | 200 | 1000 | - | V/mV |
| Common-Mode Rejection | CMR | VCM = ±13.5 V | 108 | 128 | - | dB |
| Power Supply Rejection | PSR | VS = ±2.5 V to ±20 V | 108 | 126 | - | dB |
| Input Voltage Range | IVR | - | ±13.5 | - | ±14.0 | V |
| Output Voltage Swing | VO | RL = 10 kΩ | ±13 | - | ±14 | V |
| Slew Rate | SR | - | 0.05 | 0.15 | - | V/μs |
| Supply Current | ISY | - | 400 | 800 | - | μA |
| Supply Voltage | VS | - | ±2.5 | - | ±20 | V |
Key Features
- Low Power Consumption: The OP97FSZ-REEL operates with a supply current of only 600 μA, making it suitable for battery-powered and portable instruments.
- High Precision: It features an ultralow input offset voltage of 25 μV maximum and a low drift of 0.6 μV/°C, ensuring high precision over a wide temperature range.
- Low Bias Current: The input bias current is very low, typically 100 pA at 25°C and 250 pA over the full military temperature range.
- High Common-Mode Rejection and Power Supply Rejection: The OP97FSZ-REEL offers high CMR and PSR of 108 dB minimum, ensuring robust performance against common-mode and supply voltage variations.
- Extended Industrial Temperature Range: It operates over a temperature range of −40°C to +85°C, making it suitable for a variety of environmental conditions.
- Input Protection: The input pins are protected against large differential voltages by back-to-back diodes.
- Low Operating Headroom: The amplifier can operate with supplies as low as ±2 V and typically swings to within 1 V of the rails when using a 10 kΩ load.
Applications
- Precision Long-Term Integrators and Sample-and-Hold Circuits: The OP97FSZ-REEL is ideal for applications requiring high precision and low drift over time and temperature.
- Portable and Battery-Powered Instruments: Its low power consumption makes it a preferred choice for devices that need to operate on battery power for extended periods.
- Peak Detectors and Log Amplifiers: The low bias current and high precision make it suitable for applications where minimal input current is crucial.
- Industrial and Automotive Systems: The extended industrial temperature range and robust performance against common-mode and supply voltage variations make it suitable for various industrial and automotive applications.
Q & A
- What is the typical supply current of the OP97FSZ-REEL?
The typical supply current of the OP97FSZ-REEL is 600 μA.
- What is the input offset voltage of the OP97FSZ-REEL?
The input offset voltage is 25 μV maximum.
- What is the temperature range for the OP97FSZ-REEL?
The OP97FSZ-REEL operates over a temperature range of −40°C to +85°C.
- What is the common-mode rejection ratio (CMR) of the OP97FSZ-REEL?
The CMR is 108 dB minimum.
- What is the power supply rejection ratio (PSR) of the OP97FSZ-REEL?
The PSR is 108 dB minimum over a supply voltage range of ±2.5 V to ±20 V.
- Does the OP97FSZ-REEL require external offset trimming?
No, external offset trimming is generally not required due to the extremely low offset voltage.
- What is the slew rate of the OP97FSZ-REEL?
The slew rate is 0.05 V/μs to 0.15 V/μs.
- How is the input protection implemented in the OP97FSZ-REEL?
The input pins are protected against large differential voltages by back-to-back diodes.
- What is the typical output voltage swing of the OP97FSZ-REEL?
The output voltage swing is typically ±13 V with a 10 kΩ load.
- Can the OP97FSZ-REEL be used in sample-and-hold circuits?
Yes, it is highly suitable for sample-and-hold circuits due to its low bias current and high precision.
