Overview
The OP97FP, produced by Analog Devices Inc., is a low-power, high-precision operational amplifier designed as a low-power alternative to the industry-standard OP07 precision amplifier. It maintains the performance standards of the OP07 while significantly reducing the supply current to 600 μA, which is less than one-sixth of the OP07's supply current. The OP97FP is known for its ultralow offset voltage, minimal bias current, and high common-mode rejection, making it ideal for precision applications over a wide temperature range.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS | VS = ±15 V, VCM = 0 V, TA = 25°C | 10 | 25 | 30 | μV |
| Offset Voltage Drift | TCVOS | S suffix | 0.2 | 0.6 | 0.3 | μV/°C |
| Input Offset Current | IOS | VS = ±15 V, VCM = 0 V, TA = 25°C | 30 | 100 | 150 | pA |
| Input Bias Current | IB | VS = ±15 V, VCM = 0 V, TA = 25°C | ±30 | ±100 | ±150 | pA |
| Common-Mode Rejection Ratio | CMRR | VS = ±15 V, VCM = 0 V, TA = 25°C | 114 | dB | ||
| Operating Temperature Range | TA | –40°C | +85°C | °C | ||
| Supply Voltage Range | VS | ±2.25 V | ±20 V | V |
Key Features
- Low supply current: 600 μA maximum, significantly lower than the OP07.
- Ultralow offset voltage: 25 μV maximum and drift over temperature below 0.6 μV/°C.
- Very low bias current: 100 pA maximum at 25°C and 250 pA maximum over the full military temperature range.
- High common-mode rejection ratio: 114 dB minimum.
- Extended industrial temperature range: –40°C to +85°C.
- High power supply rejection ratio (PSR) with a supply range from ±2.25 V to ±20 V.
- No external offset trimming required in most circuits due to the extremely low offset voltage.
- Pin-compatible with the OP07, allowing easy upgrades in existing designs.
Applications
The OP97FP is ideal for use in precision long-term integrators, sample-and-hold circuits, peak detectors, and log amplifiers that must operate over a wide temperature range. It is also suitable for portable and battery-powered instruments due to its minimal power requirements and high PSR. Additionally, it can be used to upgrade circuit designs using AD725, OP05, OP07, OP12, and PM1012 type amplifiers, and can replace 741-type amplifiers in circuits without nulling or where the nulling circuitry has been removed.
Q & A
- What is the maximum supply current of the OP97FP?
The maximum supply current of the OP97FP is 600 μA. - What is the typical offset voltage of the OP97FP?
The typical offset voltage of the OP97FP is 25 μV. - What is the temperature drift of the offset voltage for the OP97FP?
The temperature drift of the offset voltage for the OP97FP is below 0.6 μV/°C. - What is the common-mode rejection ratio (CMRR) of the OP97FP?
The CMRR of the OP97FP is 114 dB minimum. - What is the operating temperature range of the OP97FP?
The operating temperature range of the OP97FP is –40°C to +85°C. - Can the OP97FP replace the OP07 in existing designs?
Yes, the OP97FP is pin-compatible with the OP07 and can be used to upgrade existing designs. - What is the input bias current of the OP97FP at 25°C?
The input bias current of the OP97FP at 25°C is 100 pA maximum. - Does the OP97FP require external offset trimming?
No, external offset trimming is not required in most circuits due to the extremely low offset voltage. - What is the supply voltage range for the OP97FP?
The supply voltage range for the OP97FP is from ±2.25 V to ±20 V. - Is the OP97FP suitable for battery-powered instruments?
Yes, the OP97FP is suitable for battery-powered instruments due to its minimal power requirements and high PSR.
