Overview
The OP97FSZ 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 of the OP07 while utilizing only 600 μA of supply current, which is less than one-sixth of the OP07's current consumption. 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 OP97 operates with a supply current of only 600 μA, making it suitable for battery-powered and portable devices.
- High Precision: Features an ultralow input offset voltage of 25 μV maximum and a low drift of 0.6 μV/°C, eliminating the need for external offset trimming in most circuits.
- Low Bias Current: The input bias current is very low, remaining below 250 pA over the full military temperature range, which is beneficial for applications like sample-and-hold amplifiers and peak detectors.
- High Common-Mode Rejection and Power Supply Rejection: Offers a common-mode rejection ratio (CMR) and power supply rejection ratio (PSR) of up to 128 dB, ensuring high performance over a wide range of common-mode or supply voltages.
- Extended Temperature Range: Operates over an extended industrial temperature range of −40°C to +85°C, making it suitable for various environmental conditions.
- Low Operating Headroom: Requires minimal operating headroom about the supply rails and can operate with supplies as low as ±2 V.
Applications
- Precision Long-Term Integrators and Sample-and-Hold Circuits: The OP97 is ideal for use in precision long-term integrators and sample-and-hold circuits that must operate at elevated temperatures due to its low bias current and high precision.
- Portable and Battery-Powered Instruments: Its low power consumption makes it a preferred device for portable and battery-powered instruments.
- Peak Detectors and Log Amplifiers: The low bias current and high precision of the OP97 make it attractive for use in peak detectors and log amplifiers that must operate over a wide temperature range.
- General Purpose Amplification: Suitable for various general-purpose amplification tasks where high precision and low power consumption are required.
Q & A
- What is the maximum input offset voltage of the OP97FSZ?
The maximum input offset voltage of the OP97FSZ is 25 μV for the OP97E and 200 μV for the OP97F.
- What is the typical supply current of the OP97FSZ?
The typical supply current of the OP97FSZ is 600 μA.
- What is the common-mode rejection ratio (CMR) of the OP97FSZ?
The CMR of the OP97FSZ is up to 128 dB.
- What is the operating temperature range of the OP97FSZ?
The OP97FSZ operates over an extended industrial temperature range of −40°C to +85°C.
- Is external offset trimming required for the OP97FSZ?
No, external offset trimming is generally not required due to the extremely low offset voltage and drift of the OP97FSZ.
- What is the slew rate of the OP97FSZ?
The slew rate of the OP97FSZ is between 0.05 V/μs and 0.15 V/μs.
- Can the OP97FSZ be used in sample-and-hold circuits?
Yes, the OP97FSZ is suitable for use in sample-and-hold circuits due to its low bias current and high precision.
- What is the input bias current of the OP97FSZ?
The input bias current of the OP97FSZ is below 250 pA over the full military temperature range.
- Is the OP97FSZ RoHS compliant?
Yes, the OP97FSZ is RoHS compliant.
- What is the typical output voltage swing of the OP97FSZ?
The typical output voltage swing of the OP97FSZ is ±13 V to ±14 V when using a 10 kΩ load.
