Overview
The OP2177ARMZ-R2, produced by Analog Devices Inc., is a high-precision, dual operational amplifier known for its extremely low offset voltage, low input bias current, and excellent power supply rejection ratio (PSRR) and common-mode rejection ratio (CMRR). This amplifier is part of the OPx177 family, which includes single, dual, and quad configurations. The OP2177 is particularly suited for applications requiring high accuracy and stability over a wide temperature range, from −40°C to +125°C. It is available in compact 8-lead narrow SOIC and MSOP packages, making it ideal for space-constrained designs.
Key Specifications
| Parameter | Symbol | Min | Typ | 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 | 118 | 126 | 125 | 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 | 4.1 | V | ||
| Output Voltage Low | VOL | −4.1 | V | ||
| Output Current | IOUT | ±10 | mA | ||
| Power Supply Rejection Ratio | PSRR | 114 | 121 | 120 | dB |
| Supply Current per Amplifier | ISY | 400 | 500 | 600 | 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 | ||
| Current Noise Density | in | 0.2 | pA/√Hz |
Key Features
- High Precision: Extremely low offset voltage (15 μV to 75 μV) and low offset voltage drift (0.2 μV/°C to 0.7 μV/°C).
- Low Input Bias Current: Input bias current as low as ±2 nA and input offset current as low as ±1 nA.
- Excellent Rejection Ratios: High common-mode rejection ratio (CMRR) of 118 dB to 126 dB and power supply rejection ratio (PSRR) of 114 dB to 121 dB.
- Wide Operating Temperature Range: Fully specified for operation from −40°C to +125°C, making it suitable for demanding operating environments.
- Compact Packaging: Available in 8-lead narrow SOIC and MSOP packages, ideal for space-constrained designs.
- Low Noise Performance: Low voltage noise density (7.9 nV/√Hz to 8.5 nV/√Hz) and low current noise density (0.2 pA/√Hz).
Applications
- Thermocouple Circuits: Ideal for thermocouple signal conditioning due to its low offset voltage and drift.
- Sensor Signal Conditioning: Suitable for conditioning signals from RTD, strain-bridge, and other sensors.
- Precision Diode Power Measurement: Used in precision diode power measurement and voltage and current level setting.
- Optical and Wireless Transmission Systems: Applied in level detection in optical and wireless transmission systems.
- Line-Powered and Portable Instrumentation: Used in line-powered and portable instrumentation and controls.
- Precision Filters: Employed in precision filter applications.
Q & A
- What is the typical offset voltage of the OP2177?
The typical offset voltage of the OP2177 is 60 μV, with a maximum of 75 μV.
- What is the input bias current range of the OP2177?
The input bias current range is from −2 nA to +2 nA.
- What is the common-mode rejection ratio (CMRR) of the OP2177?
The CMRR is between 118 dB and 126 dB.
- What is the operating temperature range of the OP2177?
The OP2177 operates from −40°C to +125°C.
- In what packages is the OP2177 available?
The OP2177 is available in 8-lead narrow SOIC and MSOP packages.
- What is the slew rate of the OP2177?
The slew rate is 0.7 V/μs.
- What are some typical applications of the OP2177?
Typical applications include thermocouple circuits, sensor signal conditioning, precision diode power measurement, and optical and wireless transmission systems.
- How much output current can the OP2177 provide?
The OP2177 can provide an output current of ±10 mA.
- What is the gain bandwidth product of the OP2177?
The gain bandwidth product is 1.3 MHz.
- What is the voltage noise density of the OP2177?
The voltage noise density is between 7.9 nV/√Hz and 8.5 nV/√Hz.
