Overview
The OP177GSZ-REEL, produced by Analog Devices Inc., is a high-precision operational amplifier known for its exceptional performance characteristics. This device is part of the OP177 series, which features one of the highest precision performances among operational amplifiers. The OP177 is distinguished by its low offset voltage, excellent open-loop gain, and high common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR). It is designed to provide accurate performance in high closed-loop gain applications and serves as a cost-effective alternative to chopper-stabilized amplifiers, offering chopper-type performance without the associated drawbacks.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Offset Voltage | VOS | 10 | 25 | 20 | μV |
| Long-term Input Offset Voltage Stability | ΔVOS/time | 0.3 | 0.4 | - | μV/mo |
| Input Offset Current | IOS | 0.3 | 1.5 | 2.8 | nA |
| Input Bias Current | IB | -0.2 | +1.2 | +2.8 | nA |
| Input Noise Voltage | en | 118 | 150 | - | nV rms (1 Hz to 100 Hz) |
| Input Noise Current | in | 3 | 8 | - | pA rms (1 Hz to 100 Hz) |
| Common-Mode Rejection Ratio (CMRR) | - | - | - | 130 dB (min) | - |
| Power Supply Rejection Ratio (PSRR) | - | - | - | 120 dB (min) | - |
| Supply Voltage | - | - | - | ±3V to ±18V | - |
| Operating Temperature Range | - | - | - | -40°C to +85°C | - |
| Package / Case | - | - | - | 8-SOIC (0.154", 3.90mm Width) | - |
Key Features
- High Precision Performance: The OP177 features an extremely low offset voltage of 25 μV maximum at room temperature and a low offset voltage drift of 0.3 μV/°C maximum, ensuring high system accuracy over temperature.
- Excellent Open-Loop Gain: The device maintains an open-loop gain of 12 V/μV over the full ±10 V output range, ensuring high gain accuracy.
- High CMRR and PSRR: With a CMRR of 130 dB minimum and a PSRR of 120 dB minimum, the OP177 provides excellent rejection of common-mode and power supply noise.
- Low Noise and Low Supply Current: The OP177 has low input noise voltage and current, and it operates with a low supply current of 2 mA maximum, making it suitable for a variety of applications.
- Industry-Standard Package: The device is available in an 8-lead SOIC package, making it compatible with industry-standard precision operational amplifier sockets.
Applications
- Precision Instrumentation: The OP177 is ideal for use in precision instrumentation due to its high accuracy and stability over temperature.
- High Closed-Loop Gain Applications: Its exceptional open-loop gain and low offset voltage make it suitable for applications requiring high closed-loop gain.
- Medical and Scientific Equipment: The device's low noise and high precision characteristics are beneficial in medical and scientific equipment where accuracy is crucial.
- Aerospace and Defense: The OP177's robust performance and compliance with various standards make it a viable choice for aerospace and defense applications.
Q & A
- What is the maximum input offset voltage of the OP177?
The maximum input offset voltage of the OP177 is 25 μV at room temperature.
- What is the typical open-loop gain of the OP177?
The typical open-loop gain of the OP177 is 12 V/μV.
- What is the CMRR of the OP177?
The CMRR of the OP177 is 130 dB minimum.
- What is the maximum supply current of the OP177?
The maximum supply current of the OP177 is 2 mA.
- What is the operating temperature range of the OP177?
The operating temperature range of the OP177 is -40°C to +85°C.
- What package types are available for the OP177?
The OP177 is available in 8-lead PDIP and 8-lead SOIC packages.
- Is the OP177 RoHS compliant?
Yes, the OP177 is RoHS compliant.
- What are the typical applications of the OP177?
The OP177 is typically used in precision instrumentation, high closed-loop gain applications, medical and scientific equipment, and aerospace and defense applications.
- How does the OP177 compare to chopper-stabilized amplifiers?
The OP177 provides chopper-type performance without the usual problems of high noise, low frequency chopper spikes, and bulky external storage capacitors associated with chopper-stabilized amplifiers.
- What is the slew rate of the OP177?
The slew rate of the OP177 is 0.3 V/μs.
