Overview
The OP2177ARM-R2 is a high-precision, low-noise operational amplifier produced by Analog Devices Inc. It is part of the OPx177 family, which includes single, dual, and quad amplifiers known for their extremely low offset voltage and drift, low input bias current, and low noise. This amplifier is particularly suited for applications requiring high precision and stability over a wide temperature range.
The OP2177ARM-R2 is available in an 8-lead MSOP package, making it suitable for space-constrained designs while maintaining superior performance characteristics. It operates over a wide supply voltage range of ±2.5 V to ±15 V and is stable with capacitive loads, ensuring reliability in various operational conditions.
Key Specifications
| Parameter | Symbol | Min | Typical | Max | Unit |
|---|---|---|---|---|---|
| Offset Voltage | VOS | 15 | 60 | 75 | μV |
| Input Bias Current | IB | -2 | 0.5 | 2 | nA |
| Input Offset Current | IOS | -1 | 0.2 | 1 | nA |
| Input Voltage Range | -3.5 | 3.5 | V | ||
| Common-Mode Rejection Ratio | CMRR | 120 | 126 | dB | |
| Large Signal Voltage Gain | AVO | 1000 | 2000 | V/mV | |
| Offset Voltage Drift | ΔVOS/ΔT | 0.2 | 0.7 | μV/°C | |
| Output Voltage High | VOH | 4 | 4.1 | V | |
| Output Voltage Low | VOL | -4.1 | -4 | V | |
| Output Current | IOUT | ±10 | mA | ||
| Power Supply Rejection Ratio | PSRR | 118 | 121 | dB | |
| Supply Current per Amplifier | ISY | 400 | 500 | μA | |
| Slew Rate | SR | 0.7 | V/μs | ||
| Gain Bandwidth Product | GBP | 1.3 | MHz | ||
| Voltage Noise Density | en | 7.9-8.5 | nV/√Hz |
Key Features
- Low Offset Voltage and Drift: The OP2177ARM-R2 features very low offset voltage (15 μV to 75 μV) and drift (0.2 μV/°C to 0.7 μV/°C), making it ideal for precision applications.
- Low Input Bias Current: With an input bias current of -2 nA to 2 nA, this amplifier minimizes errors in high-impedance circuits.
- Low Noise: It offers low noise performance with a voltage noise density of 7.9-8.5 nV/√Hz and a peak-to-peak noise of 0.4 μV from 0.1 Hz to 10 Hz.
- High CMRR and PSRR: The amplifier has a high common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR), both exceeding 120 dB, ensuring stability against common-mode and power supply noise.
- Wide Supply Voltage Range: It operates over a wide supply voltage range of ±2.5 V to ±15 V, making it versatile for various power supply conditions.
- Unity Gain Stable and No Phase Reversal: The OP2177ARM-R2 is stable with capacitive loads and does not exhibit phase reversal, ensuring reliable operation in feedback configurations.
Applications
- Thermocouple, RTD, and Strain-Bridge Circuits: Ideal for signal conditioning in temperature and strain measurement applications due to its low offset voltage and drift.
- Instrumentation and Controls: Suitable for line-powered and portable instrumentation, including precision filters and level detection circuits.
- Wireless and Optical Transmission Systems: Used in control circuits for wireless base stations and optical networks due to its low noise and high stability.
- Shunt Current Measurements: Applicable in current measurement circuits requiring high precision and low noise.
Q & A
- What is the typical offset voltage of the OP2177ARM-R2?
The typical offset voltage of the OP2177ARM-R2 is 60 μV, with a maximum of 75 μV.
- What is the input bias current range of the OP2177ARM-R2?
The input bias current ranges from -2 nA to 2 nA.
- What is the common-mode rejection ratio (CMRR) of the OP2177ARM-R2?
The CMRR is typically 126 dB, with a minimum of 120 dB.
- What is the power supply rejection ratio (PSRR) of the OP2177ARM-R2?
The PSRR is typically 121 dB, with a minimum of 118 dB.
- What is the slew rate of the OP2177ARM-R2?
The slew rate is 0.7 V/μs.
- What is the gain bandwidth product (GBP) of the OP2177ARM-R2?
The GBP is 1.3 MHz.
- What is the typical supply current per amplifier for the OP2177ARM-R2?
The typical supply current per amplifier is 500 μA.
- What are the operating temperature ranges for the OP2177ARM-R2?
The operating temperature range is from -40°C to +125°C.
- What package types are available for the OP2177ARM-R2?
The OP2177ARM-R2 is available in 8-lead MSOP and 8-lead SOIC packages.
- What are some common applications of the OP2177ARM-R2?
Common applications include thermocouple and RTD circuits, instrumentation, wireless and optical transmission systems, and shunt current measurements.
