OP07 Operational Amplifier IC: Pinout, Datasheet & Its Application

Operational Amplifiers (Op-Amps) in Electronics:

In the realm of electronics, operational amplifiers (op-amps) stand as vital components, serving as versatile voltage amplifiers that work in conjunction with basic elements like resistors and capacitors. These chips play a fundamental role in analog devices, shaping their functionality through intricate interactions with key components. The electronics market boasts a diverse array of op-amp options, featuring well-known models such as TL082, LM358, LM741, and the precision-focused OP07 operational amplifier.

Role and Functionality of Op-Amps:

Operational amplifiers, commonly known as op-amps, are linear integrated circuits that excel in various tasks ranging from DC signal amplification to signal filtering, conditioning, and even performing mathematical operations. These highly adaptable chips are primarily categorized into two main types: inverting and non-inverting configurations. Each configuration offers distinct advantages and is selected based on specific application requirements.

Exploring the OP07 Operational Amplifier:

The OP07 Operational Amplifier emerges as a precision-focused component renowned for its exceptional performance in critical applications demanding high accuracy and stability. With its low offset voltage, high open-loop gain, and minimal input bias current, the OP07 serves as a go-to choice for precision instrumentation, data acquisition systems, strain gauge signal conditioning, and other applications necessitating precise signal processing.

What is an OP07 Operational Amplifier (Op-Amp)?

The OP07 is a high-precision operational amplifier (op-amp) known for its excellent DC performance and low offset voltage. Developed by Analog Devices, the OP07 is widely used in precision analog circuits where accuracy and stability are crucial. Here are some key points about the OP07 op-amp:

OP07 Operational Amplifier Overview:

• Manufacturer: Analog Devices
• Type: Precision Operational Amplifier
• Features: High accuracy, low offset voltage, low input bias current
• Package: Available in various package types (e.g., DIP, SOIC)
• Specialty: Known for its exceptional DC performance and stability

Key Features of the OP07:

1. Low Offset Voltage:

   • The OP07 is renowned for its low offset voltage, ensuring precise amplification of signals with minimal error.

2. High Open-Loop Gain:

   • The op-amp's high open-loop gain enables precise amplification and signal processing.

3. Low Input Bias Current:

   • With low input bias current, the OP07 minimizes input loading effects and enhances circuit performance.

4. Low Noise:

   • The OP07 is designed to maintain low noise levels, crucial for high-precision applications where signal clarity is paramount.

5. High CMRR and PSRR:

   • Excellent Common-Mode Rejection Ratio (CMRR) and Power Supply Rejection Ratio (PSRR) ensure stable operation in varying conditions.

Common Applications of the OP07 Op-Amp:

1. Precision Instrumentation Amplifiers:

   • Used in circuits requiring accurate signal amplification, such as sensor interfaces and measurement systems.

2. Data Acquisition Systems:

   • The OP07 is suitable for precision analog-to-digital converters (ADCs) and other data acquisition applications.

3. Strain Gauge Signal Conditioning:

   • Employed for precise signal conditioning in strain gauge measurement systems.

4. Temperature Measurement Circuits:

   • Utilized in high-accuracy temperature measurement circuits where stability and precision are crucial.

5. Voltage References:

   • Integrated into voltage reference circuits for generating stable reference voltages in precision applications.

6. Medical Instrumentation:

   • Found in medical devices requiring high precision and accuracy, such as patient monitoring systems.

7. Audio Signal Processing:

   • Used in high-fidelity audio applications demanding low noise and accurate signal processing.

OP07 Pinout

Pin configuration

OP07 Features

1. Low Offset Voltage:

   • The OP07 is known for its low offset voltage, ensuring accurate amplification of signals with minimal error.

2. High Open-Loop Gain:

   • Offers high open-loop gain for precise input signal amplification.

3. Low Input Bias Current:

   • Features low input bias current to minimize input loading effects, crucial for high-precision applications.

4. Low Noise:

   • Maintains low noise levels, providing clear signal processing in sensitive applications.

5. High Common-Mode Rejection Ratio (CMRR):

   • Good CMRR ensures effective rejection of common-mode noise for improved signal integrity.

6. High Power Supply Rejection Ratio (PSRR):

   • Provides high immunity to power supply variations, contributing to stable operation in varying conditions.

7. Excellent Linearity:

   • Ensures linearity in signal processing, essential for accurate representation of input signals.

8. Extended Temperature Range:

   • Operates reliably over a wide temperature range, typically from -40°C to +125°C.

9. Low Drift:

   • Minimal drift characteristics for stable performance over time and temperature variations.

10. Short-Circuit Protection:

    • Incorporates protection mechanisms against short circuits to safeguard the amplifier and connected components.

11. Wide Bandwidth:

    • Offers a broad bandwidth for efficient signal processing across a wide range of frequencies.

12. High Slew Rate:

    • Provides a high slew rate for rapid response to input signal changes.

13. Precision Amplification:

    • Ideal for precision instrumentation circuits and applications where accuracy is paramount.

14. Stable and Reliable:

    • Designed to deliver stable and reliable performance, critical in precision analog circuits.

15. Versatile Utility:

    • Suitable for a wide range of applications, including data acquisition systems, instrumentation, temperature measurement, and more.

Where to Use OP07 Op-Amp?

The OP07 operational amplifier is a precision-oriented component with characteristics that make it particularly well-suited for a variety of applications where accuracy, stability, and low offset voltage are crucial. Here are some common areas where the OP07 op-amp finds application:

1. Precision Instrumentation:

• Usage: OP07 is popular in precision instrumentation circuits where accurate signal amplification and processing are essential, such as in sensor interfaces and measurement equipment.

2. Data Acquisition Systems:

• Usage: OP07 op-amps are employed in data acquisition systems to amplify and condition incoming signals for conversion by analog-to-digital converters (ADCs).

3. Temperature Measurement:

• Usage: Widely used in temperature measurement circuits due to its stability, low drift characteristics, and ability to provide precise temperature readings.

4. Strain Gauge Signal Conditioning:

• Usage: OP07 op-amps are used in circuits that involve precise signal conditioning for strain gauge measurements.

5. Medical Instrumentation:

• Usage: Found in medical devices and equipment, the OP07 ensures accurate and stable signal processing, critical for patient monitoring and diagnostic systems.

6. Voltage References:

• Usage: Integrated into voltage reference circuits to generate stable and accurate reference voltages for use in various precision applications.

7. Aerospace and Defense Systems:

• Usage: Due to its high precision and reliability, the OP07 is utilized in aerospace and defense applications where performance under extreme conditions is necessary.

8. Audio Processing:

• Usage: In high-fidelity audio applications, the OP07 provides low noise amplification required for audio signal processing and filtering.

9. Bridge Amplifiers:

• Usage: OP07 op-amps are used in bridge amplifiers to accurately amplify small differential signals in applications like pressure and load measurements.

10. Control Systems:

• Usage: In control systems requiring high precision and stability, the OP07 helps maintain accurate feedback loops and control signals.

The OP07 op-amp's precision characteristics, including low offset voltage, high open-loop gain, low noise, and excellent linearity, make it a versatile choice for applications demanding accurate signal processing, filtering, and amplification. Whether in industrial settings, scientific instruments, medical devices, or audio equipment, the OP07 proves to be a reliable component where precision and stability are paramount.

How to use OP07 Op-Amp?

Using the OP07 operational amplifier involves understanding its pin configuration, power supply requirements, and typical circuit configurations for various applications. Here is a basic guide on how to use the OP07 op-amp effectively:

Circuit Configuration:

Pin Configuration:

The OP07 typically has 8 pins in a Dual Inline Package (DIP) format. The pinout is as follows:

• Pin 1 (Offset Null): Used for offset nulling adjustments.
• Pin 2 (Inverting Input): Inverting input terminal.
• Pin 3 (Non-Inverting Input): Non-inverting input terminal.
• Pin 4 (V-): Negative power supply pin.
• Pin 5 (Offset Null): Offset nulling adjustments.
• Pin 6 (Output): Output terminal.
• Pin 7 (V+): Positive power supply pin.
• Pin 8 (NC): No connection (not internally connected).

Power Supply:

• The OP07 typically requires dual power supplies (+V and -V) for proper operation.
• Ensure that the power supply voltages are within the specified operating range of the OP07.

Input Configurations:

• Inverting Configuration: Connect the signal source to the inverting input (Pin 2) and provide feedback through a resistor connected between the output (Pin 6) and the inverting input (Pin 2).

• Non-Inverting Configuration: Connect the signal source to the non-inverting input (Pin 3) and provide feedback through a resistor connected between the output (Pin 6) and the non-inverting input (Pin 3).

Offset Nulling:

• The offset null pins (Pin 1 and Pin 5) can be used to nullify any offset voltage present in the op-amp's output. Adjust these pins to minimize offset errors.

Steps to Use OP07 Op-Amp:

1. Connect Power Supplies:
   • Connect the positive power supply (V+) to Pin 7 and the negative power supply (V-) to Pin 4.
2. Input Configuration:
   • Choose between inverting or non-inverting configuration based on your circuit requirements.
3. Provide Feedback:
   • Add appropriate feedback components (resistors) to configure the desired gain and stability for your circuit.
4. Signal Input:
   • Connect your signal source to the selected input terminal (inverting or non-inverting).
5. Output Connection:
   • Route the output signal from Pin 6 to the next stage of your circuit or the load.
6. Offset Nulling (if needed):
   • Adjust the offset null pins (Pin 1 and Pin 5) if offset voltage needs to be minimized.
7. Testing:
   • Power up the circuit and test its functionality using appropriate test equipment to verify amplification, linearity, and stability.

Precautions:

• Bypass capacitors: Use decoupling capacitors to stabilize the power supply.
• Avoid overloading: Ensure the op-amp is not subject to excessive loads that could compromise its performance.
• Follow datasheet: Refer to the OP07 datasheet for specific details on operating conditions, maximum ratings, and application guidelines.

By following these steps and precautions, you can effectively utilize the OP07 operational amplifier in your circuits, ensuring optimal performance and accuracy as per your application requirements.

OP07 Circuit

Differential Amplifier Circuit using OP07 Operational Amplifier

A differential amplifier using the OP07 operational amplifier can be configured to amplify the voltage difference between two input signals. This circuit is commonly used in applications where the amplifier needs to reject common-mode signals while amplifying the differential input signal. Below is a basic schematic for a non-inverting differential amplifier using the OP07 op-amp:

Differential Amplifier Circuit using OP07:

Circuit Diagram:

            +Vcc                       +Vcc
             │                          │
             │                          │
             R1     R2        R3     R4
VIN1 ────────┼───□───/\/\───┼───────┼───── Output
             │   │     Op07    │       │
             │   │             │       │
             R1   R2            R3      R4
VIN2 ────────┼───□───/\/\───┼───────┼
             │                 │       
             ┴                 ┴          
            -Vcc              -Vcc 

Circuit Description:

• Op-Amp: OP07 configured as a non-inverting amplifier.
• VIN1 and VIN2: Differential input signals.
• R1, R2, R3, R4: Feedback resistors to set the gain of the amplifier.

Operation:

1. The circuit amplifies the voltage difference between VIN1 and VIN2 while rejecting any common-mode signals that are present on both inputs.
2. The gain of this non-inverting differential amplifier can be calculated as: ( \text{Gain} = 1 + \frac{R2}{R1} ) for both input signals.

Design Considerations:

• Choose resistor values for R1, R2, R3, and R4 to set the desired gain for the amplifier.
• Ensure that the resistor values match the input voltage range and output requirements of your specific application.
• Include bypass capacitors for stability and filtering if necessary.
• Review the OP07 datasheet for operating conditions and recommendations.

Example Calculation:

If you want a gain of 10 for your differential amplifier, you can set R2 = 90kΩ, R1 = 10kΩ, R3 = 90kΩ, and R4 = 10kΩ.

This basic differential amplifier circuit using the OP07 op-amp can be further customized based on specific gain requirements and input signal characteristics for your application. It is also essential to consider noise rejection, common-mode rejection ratio, and stability when designing differential amplifiers for precise signal processing.

What are the Advantages of OP07 IC?

1. High Precision:

   • The OP07 is renowned for its high precision, featuring low offset voltage and low input bias current that contribute to accurate signal processing and amplification.

2. Low Offset Voltage:

   • The OP07 exhibits extremely low offset voltage characteristics, minimizing errors in signal amplification and ensuring precise output representation of the input signal.

3. High Open-Loop Gain:

   • With a high open-loop gain, the OP07 can provide accurate and stable amplification of signals across a wide range of frequencies.

4. Low Input Bias Current:

   • Its low input bias current reduces input loading effects, making the OP07 suitable for applications where signal integrity and accuracy are paramount.

5. Low Noise:

   • The IC maintains low noise levels, contributing to clear signal processing and quality output in sensitive applications requiring noise minimization.

6. High Common-Mode Rejection Ratio (CMRR):

   • Effective CMRR ensures better rejection of common-mode noise, enhancing the accuracy and stability of the amplified output signal.

7. High Power Supply Rejection Ratio (PSRR):

   • The OP07's high PSRR capability helps maintain stable operation in the presence of power supply variations, ensuring consistent performance under varying conditions.

8. Stability and Reliability:

   • Known for its stability and reliability, the OP07 is designed to deliver consistent performance over time and under changing environmental conditions.

9. Wide Temperature Range Operation:

   • The OP07 can operate reliably across a broad temperature range, making it suitable for applications in various environments and industries.

10. Versatility:

    • The OP07 is versatile and can be applied in a wide range of precision analog circuits, including instrumentation, data acquisition systems, audio processing, and medical instrumentation, among others.

11. Ease of Use:

    • Its standard pinout and compatibility with various circuit configurations make the OP07 easy to integrate into different circuit designs and applications.

12. Short-Circuit Protection:

    • Some versions of the OP07 may include short-circuit protection features to safeguard the amplifier and connected components from damage.

OP07 Application

1. Precision Instrumentation:

• Used in precision instrumentation circuits for accurate signal amplification and processing in measurement and control systems.

2. Data Acquisition Systems:

• Found in data acquisition systems to condition and amplify signals from sensors before conversion by analog-to-digital converters.

3. Medical Devices:

• Employed in medical instruments and devices for monitoring, diagnostic equipment, and patient care systems requiring high precision and reliability.

4. Audio Equipment:

• Used in high-fidelity audio amplifiers and filters due to its low noise and high precision characteristics.

5. Bridge Amplifiers:

• Utilized in bridge amplifier circuits for applications like strain gauge measurements where accurate signal amplification is crucial.

6. Temperature Measurement:

• Integrated into temperature measurement circuits for precise and stable temperature sensing and control.

7. Control Systems:

• In control systems where stability, accuracy, and fast response times are required, the OP07 ensures precise signal processing for control applications.

8. Sensor Interfaces:

• Used in sensor interface circuits to amplify and condition signals from various types of sensors for processing.

9. Voltage References:

• Found in voltage reference circuits to generate stable and accurate reference voltage levels for use in precision applications.

10. Filters and Instrumentation Amplifiers:

• Integrated into active filters and instrumentation amplifier circuits where accurate signal processing and filtering are necessary.

11. Aerospace and Defense Systems:

• Applied in aerospace and defense systems for critical functions demanding high precision and reliability in extreme conditions.

12. Communication Systems:

• Used in communication equipment for amplification and signal conditioning in transmission and reception circuits.

13. Motor Control Systems:

• In motor control applications, the OP07 can aid in accurate signal processing and feedback for motor speed control and positioning systems.

14. Industrial Automation:

• Found in industrial automation systems where precise signal amplification and conditioning are needed for control and monitoring processes.

15. Audio Mixers and Preamplifiers:

• Integrated into audio mixers and preamplifiers for clean amplification of audio signals with low noise and high fidelity.

OP07 Equivalents & Alternatives

OP07 operational amplifier has several equivalent ICs, including CA3140, UA741, MC33171, TL081, LM339, LM4558, RC4558, NJM4560, and others. Additionally, alternative ICs to the OP07 op-amp include LM4871, IC6283, AD620, LF351, JRC45558, and more.

OP07 Datasheet

Download OP07 datasheet PDF.

Conclusion

The OP07 operational amplifier stands out for its exceptional precision, low offset voltage, high CMRR, and reliability, making it a favored choice in applications demanding accuracy and stability. Its versatile nature and wide range of applications underscore its significance in diverse industries where precision signal processing and amplification are essential. The OP07's reputation for reliability, accuracy, and ease of integration cements its position as a go-to component for engineers and designers seeking high-performance operational amplifiers for their projects.

FAQ

• What is OP07 used for?

• The OP07 operational amplifier is notably recognized for its minimal offset voltage. It delivers prolonged stability and reduced offset thanks to a low-noise, chopperless design based on bipolar transistors in its amplifier circuitry.

• What is the maximum voltage of OP07?

• 150µV.

• What is the minimum supply voltage for OP07?

• 6V.

• What is the offset voltage of the OP07?

• The minimal offset voltages typically obviate the necessity for external nulling procedures. Additionally, the OP07 boasts a low input bias current (±4 nA for the OP07E) and a substantial open-loop gain (200 V/mV for the OP07E). These characteristics of low offsets and high open-loop gain render the OP07 especially well-suited for applications demanding substantial amplification in instrumentation.

• What is the gain bandwidth product of OP07?

• The OP07 also exhibits a low input bias current (±4 nA for the OP07E) and a high open-loop gain (200 V/mV for the OP07E). This combination of minimal offset and substantial open-loop gain enhances the suitability of the OP07 for applications in high-gain instrumentation.

• How much voltage does an op amp need?

• Typically, general-purpose operational amplifiers operate within power supply voltage limits of ±15 V and deliver an output current of less than 40 milliamps. Consequently, directly connecting them to low-impedance loads like loudspeakers or motors is impractical.

• What is the difference between OP07 and OP27?

• The OP27 precision operational amplifier offers the winning combination of the low offset and drift characteristics found in the OP07, coupled with high-speed performance and minimal noise. With impressive features such as offsets as low as 25 mV and a maximum drift of 0.6 mV/°C, the OP27 is the perfect choice for precision instrumentation applications.