Overview
The OP747ARU is a precision quad rail-to-rail output single-supply operational amplifier produced by Analog Devices Inc. This amplifier features micropower operation and is designed for applications requiring high precision and low power consumption. It offers improved performance over industry-standard amplifiers like the OP07, particularly with its ability to operate on a single supply down to 3 V and its smaller package options. The OP747ARU is part of a family that includes single (OP777) and dual (OP727) versions, all of which are specified over the extended industrial temperature range of –40°C to +85°C.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | +25°C < T_A < +85°C | 30 | 160 | μV | |
| Offset Voltage | VOS | –40°C < T_A < +85°C | 50 | 300 | μV | |
| Input Bias Current | IB | –40°C < T_A < +85°C | 5 | 10 | nA | |
| Input Offset Current | IOS | –40°C < T_A < +85°C | 0.1 | 2 | nA | |
| Input Voltage Range | 0 | 4 V | ||||
| Common-Mode Rejection Ratio | CMRR | V_CM = 0 V to 4 V | 104 | 110 | dB | |
| Large Signal Voltage Gain | AVO | R_L = 10 kΩ, V_O = 0.5 V to 4.5 V | 300 | 500 | V/mV | |
| Output Voltage High | VOH | I_L = 1 mA, –40°C to +85°C | 4.88 | 4.91 | V | |
| Output Voltage Low | VOL | I_L = 1 mA, –40°C to +85°C | 126 | 140 | mV | |
| Supply Current/Amplifier | I_SY | V_O = 0 V | 220 | 320 | μA | |
| Supply Voltage Range | 2.7 | 30 V | ||||
| Operating Temperature | –40°C | +85°C | ||||
| Package/Case | 14-TSSOP |
Key Features
- Rail-to-Rail Output: The OP747ARU features rail-to-rail output ranges, ensuring that the output voltage can swing close to the supply rails.
- Micropower Operation: The amplifier operates with a supply current of less than 300 μA per amplifier at 5 V, making it suitable for low-power applications.
- High Precision: Low offset voltage and high common-mode rejection ratio (CMRR) ensure high precision in signal amplification.
- Stability with Capacitive Loads: Outputs are stable with capacitive loads of over 500 pF.
- Input Protection: 500 Ω series resistors protect the inputs, allowing input signal levels several volts above the positive supply without phase reversal.
- Extended Industrial Temperature Range: Specified over the temperature range of –40°C to +85°C.
Applications
- Line-Powered and Portable Instrumentation: Suitable for both line-powered and battery-powered instruments due to its low power consumption.
- Remote Sensor Signal Conditioning: Ideal for conditioning signals from remote sensors in various industrial and environmental monitoring applications.
- Precision Filters: Can be used in precision filter circuits where high accuracy and low noise are critical.
Q & A
- What is the OP747ARU?
The OP747ARU is a precision quad rail-to-rail output single-supply operational amplifier produced by Analog Devices Inc.
- What is the operating temperature range of the OP747ARU?
The OP747ARU is specified over the extended industrial temperature range of –40°C to +85°C.
- What is the supply voltage range for the OP747ARU?
The supply voltage range for the OP747ARU is from 2.7 V to 30 V.
- How many amplifiers are in the OP747ARU package?
The OP747ARU contains four amplifiers in a single package.
- What is the typical supply current per amplifier at 5 V?
The typical supply current per amplifier at 5 V is less than 300 μA.
- Is the OP747ARU stable with capacitive loads?
Yes, the OP747ARU is stable with capacitive loads of over 500 pF.
- What is the common-mode rejection ratio (CMRR) of the OP747ARU?
The CMRR of the OP747ARU is typically 110 dB.
- What are some common applications of the OP747ARU?
Common applications include line-powered and portable instrumentation, remote sensor signal conditioning, and precision filters.
- What package options are available for the OP747ARU?
The OP747ARU is available in 14-lead TSSOP and narrow 14-lead SO packages.
- Is the OP747ARU RoHS compliant?
Yes, the OP747ARU is RoHS compliant.
