Overview
The OP777ARM-R2, produced by Analog Devices Inc., is a high-performance operational amplifier designed for precision and reliability in various applications. This device is part of the OP777 series, known for its low offset voltage, high common-mode rejection ratio (CMRR), and excellent power supply rejection ratio (PSRR). The OP777ARM-R2 is particularly suited for instrumentation, measurement, and other precision applications where accuracy and stability are crucial.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | +25°C < T_A < +85°C | 20 | 100 | 200 | μV |
| Offset Voltage | VOS | –40°C < T_A < +85°C | 50 | 200 | 300 | μV |
| Input Bias Current | IB | –40°C < T_A < +85°C | 5.5 | 11 | nA | |
| Input Offset Current | IOS | –40°C < T_A < +85°C | 0.1 | 2 | nA | |
| Input Voltage Range | –15 | +14 | V | |||
| Common-Mode Rejection Ratio | CMRR | V_CM = –15 V to +14 V | 110 | 120 | dB | |
| Large Signal Voltage Gain | AVO | RL = 10 kΩ, VO = –14.5 V to +14.5 V | 1000 | 2500 | V/mV | |
| Output Voltage High | VOH | IL = 1 mA, –40°C < T_A < +85°C | 14.9 | 14.94 | V | |
| Output Voltage Low | VOL | IL = 1 mA, –40°C < T_A < +85°C | 126 | 140 | mV | |
| Supply Current/Amplifier | ISY | VO = 0 V, –40°C < T_A < +85°C | 220 | 320 | μA | |
| Power Supply Rejection Ratio | PSRR | VS = 3 V to 30 V | 120 | 130 | dB | |
| Supply Voltage | 36 | V |
Key Features
- Low Offset Voltage: The OP777ARM-R2 features a low offset voltage, typically 100 μV at +25°C, ensuring high precision in signal processing.
- High CMRR and PSRR: With a common-mode rejection ratio (CMRR) of 110 dB to 120 dB and a power supply rejection ratio (PSRR) of 120 dB to 130 dB, this amplifier provides excellent rejection of common-mode and power supply noise.
- Wide Supply Voltage Range: The device operates over a supply voltage range of 2.7 V to 30 V, making it versatile for various applications.
- High Large Signal Voltage Gain: It offers a large signal voltage gain of 1000 V/mV to 2500 V/mV, ensuring robust signal amplification.
- Low Input Bias Current: The input bias current is typically 11 nA, which is beneficial for high-impedance sources.
- Compact Packaging: Available in 8-TSSOP and 8-MSOP packages, making it suitable for space-constrained designs.
Applications
- Instrumentation and Measurement: Ideal for precision instrumentation, such as thermocouple amplifiers, strain gauge amplifiers, and other measurement circuits.
- Medical Devices: Suitable for medical equipment where high accuracy and low noise are critical.
- Industrial Automation: Used in control systems, sensors, and other industrial automation applications requiring high precision.
- Aerospace and Defense: Applicable in various aerospace and defense systems where reliability and precision are paramount.
Q & A
- What is the typical offset voltage of the OP777ARM-R2?
The typical offset voltage is 100 μV at +25°C and 200 μV over the –40°C to +85°C temperature range.
- What is the common-mode rejection ratio (CMRR) of the OP777ARM-R2?
The CMRR is 110 dB to 120 dB over the specified temperature range.
- What is the power supply rejection ratio (PSRR) of the OP777ARM-R2?
The PSRR is 120 dB to 130 dB over the supply voltage range of 3 V to 30 V.
- What is the input bias current of the OP777ARM-R2?
The input bias current is typically 11 nA over the –40°C to +85°C temperature range.
- What is the large signal voltage gain of the OP777ARM-R2?
The large signal voltage gain is 1000 V/mV to 2500 V/mV.
- What are the output voltage high and low specifications of the OP777ARM-R2?
The output voltage high is 14.9 V to 14.94 V, and the output voltage low is 126 mV to 140 mV at 1 mA load current.
- What is the supply current per amplifier for the OP777ARM-R2?
The supply current per amplifier is typically 220 μA to 320 μA over the –40°C to +85°C temperature range.
- In what packages is the OP777ARM-R2 available?
The OP777ARM-R2 is available in 8-TSSOP and 8-MSOP packages.
- What are some typical applications of the OP777ARM-R2?
Typical applications include instrumentation, medical devices, industrial automation, and aerospace and defense systems.
- What is the operating supply voltage range of the OP777ARM-R2?
The operating supply voltage range is 2.7 V to 30 V.
