Overview
The OP747ARZ-REEL is a precision, low-power, rail-to-rail output operational amplifier produced by Analog Devices Inc. This quad operational amplifier is designed for single-supply operation and offers improved performance over traditional industry-standard amplifiers like the OP07. It features micropower operation, making it suitable for both line-powered and portable instrumentation applications. The OP747 is available in 14-lead SOIC and TSSOP packages, enhancing its versatility in various design scenarios.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Current/Amplifier | VO = 0 V, –40°C to +85°C | 235 | - | 320 | μA |
| Input Offset Voltage | +25°C to +85°C | 30 | - | 160 | μV |
| Input Offset Voltage Drift | –40°C to +85°C | 0.4 | - | 1.5 | μV/°C |
| Input Bias Current | –40°C to +85°C | 5 | - | 10 | nA |
| Input Offset Current | –40°C to +85°C | 0.1 | - | 2 | nA |
| Common-Mode Rejection Ratio | VCM = –15 V to +14 V | 110 | - | 120 | dB |
| Power Supply Rejection Ratio | VS = 3 V to 30 V | 120 | - | 130 | dB |
| Output Voltage High | IL = 1 mA, –40°C to +85°C | 4.88 | - | 4.91 | V |
| Output Voltage Low | IL = 1 mA, –40°C to +85°C | 126 | - | 140 | mV |
| Operating Temperature Range | - | -40 | - | 85 | °C |
Key Features
- Rail-to-Rail Output: The OP747 provides rail-to-rail output ranges, ensuring maximum signal swing and minimizing distortion.
- Low Power Consumption: With a supply current of less than 300 μA per amplifier at 5 V, it is ideal for power-sensitive applications.
- High Stability with Capacitive Loads: The amplifier is 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 Temperature Range: Specified over the extended industrial temperature range of –40°C to +85°C.
Applications
- Instrumentation: Suitable for both line-powered and portable instrumentation due to its low power consumption and high precision.
- Remote Sensor Signal Conditioning: Ideal for conditioning signals from remote sensors in various industrial and environmental monitoring applications.
- Precision Filters: Used in precision filter circuits where high accuracy and low noise are critical.
Q & A
- What is the typical supply current per amplifier for the OP747?
The typical supply current per amplifier for the OP747 is less than 300 μA at 5 V. - What is the operating temperature range of the OP747?
The OP747 is specified over the extended industrial temperature range of –40°C to +85°C. - What is the common-mode rejection ratio (CMRR) of the OP747?
The CMRR of the OP747 is 110 dB to 120 dB over the common-mode voltage range of –15 V to +14 V. - Can the OP747 handle capacitive loads?
Yes, the OP747 is stable with capacitive loads of over 500 pF. - What are the package options for the OP747?
The OP747 is available in 14-lead SOIC and TSSOP packages. - What is the input voltage range for the OP747?
The input voltage range for the OP747 is –15 V to +14 V. - How does the OP747 protect its inputs?
The OP747 has 500 Ω series resistors that protect the inputs, allowing input signal levels several volts above the positive supply without phase reversal. - What are some typical applications of the OP747?
The OP747 is used in instrumentation, remote sensor signal conditioning, and precision filter circuits. - What is the power supply rejection ratio (PSRR) of the OP747?
The PSRR of the OP747 is 120 dB to 130 dB over the supply voltage range of 3 V to 30 V. - What is the output voltage swing of the OP747?
The output voltage swing of the OP747 is approximately 4.88 V to 4.91 V for high output and 126 mV to 140 mV for low output at 1 mA load current.
