Overview
The OP97FPZ, 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 power consumption, utilizing only 600 μA of supply current, which is less than 1/6 of the OP07's current. This amplifier is notable for its ultra-low offset voltage and drift, making it ideal for precision applications over a wide temperature range.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS | - | - | 25 | 60 | μV |
| Average Temperature Coefficient of VOS | TCVOS | - | 0.2 | 0.6 | μV/°C | |
| Input Offset Current | IOS | - | - | 60 | 250 | pA |
| Average Temperature Coefficient of IOS | TCIOS | - | 0.4 | 2.5 | pA/°C | |
| Input Bias Current | IB | - | - | ±60 | ±250 | pA |
| Common-Mode Rejection Ratio | CMRR | - | - | - | 114 dB | - |
| Supply Voltage Range | VS | - | ±2.25 V | - | ±20 V | - |
| Operating Temperature Range | TA | - | -40°C | - | +85°C | - |
Key Features
- Ultra-low input offset voltage of 25 μV and drift below 0.6 μV/°C, eliminating the need for external offset trimming in most circuits.
- Very low input bias current, below 250 pA over the full military temperature range, making it suitable for sample-and-hold amplifiers, peak detectors, and log amplifiers.
- High common-mode rejection ratio (CMRR) of 114 dB minimum.
- Extended industrial temperature range from -40°C to +85°C.
- Low power consumption with a supply current of 600 μA, significantly lower than the OP07.
- Supply voltage range from ±2.25 V to ±20 V, with minimal operating headroom required.
- Input pins protected against large differential voltages by back-to-back diodes.
Applications
- Precision long-term integrators and sample-and-hold circuits that must operate at elevated temperatures.
- Portable and battery-powered instruments due to its low power requirements and wide supply voltage range.
- Circuit designs that previously used AD725, OP05, OP07, OP12, and PM1012 type amplifiers, offering an upgrade in performance.
- Replacement for 741-type amplifiers in circuits where nulling circuitry is not required or has been removed.
Q & A
- What is the primary advantage of the OP97FPZ over the OP07?
The OP97FPZ offers significantly lower power consumption, utilizing only 600 μA of supply current, which is less than 1/6 of the OP07's current.
- What is the input offset voltage of the OP97FPZ?
The input offset voltage is an ultra-low 25 μV.
- What is the temperature drift of the input offset voltage?
The temperature drift is below 0.6 μV/°C.
- What is the common-mode rejection ratio (CMRR) of the OP97FPZ?
The CMRR is 114 dB minimum.
- What is the operating temperature range of the OP97FPZ?
The operating temperature range is from -40°C to +85°C.
- What is the supply voltage range for the OP97FPZ?
The supply voltage range is from ±2.25 V to ±20 V.
- Is external offset trimming required for the OP97FPZ?
No, external offset trimming is not required in the majority of circuits due to its ultra-low offset voltage.
- What types of amplifiers can the OP97FPZ replace?
The OP97FPZ can replace 741-type amplifiers in circuits where nulling circuitry is not required or has been removed.
- What are some typical applications of the OP97FPZ?
Typical applications include precision long-term integrators, sample-and-hold circuits, and portable battery-powered instruments.
- How is the input protection for the OP97FPZ?
The input pins are protected against large differential voltages by back-to-back diodes.
