Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tube |
| ProductStatus | Active |
| AmplifierType | Instrumentation |
| NumberofCircuits | 1 |
| SlewRate | 2V/µs |
| -3dbBandwidth | 825 kHz |
| Current-InputBias | 200 pA |
| Voltage-InputOffset | 25 µV |
| Current-Supply | 900µA |
| Current-Output/Channel | 18 mA |
| Voltage-SupplySpan(Min) | 4.6 V |
| Voltage-SupplySpan(Max) | 36 V |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Tổng quan
Description
The AD8221BRZ is a high-performance, precision instrumentation amplifier manufactured by Analog Devices. It is designed for amplifying low-level signals in the presence of noise and is ideal for applications requiring high accuracy and stability. The amplifier offers a high common-mode rejection ratio (CMRR) and low offset voltage, which are essential for maintaining signal integrity in precision measurement systems.
Key features of the AD8221BRZ include a gain range of 1 to 1000, set by a single external resistor, low input bias current, and a wide supply voltage range from ±2.3V to ±18V. It also boasts a low input noise of 8 nV/√Hz, making it suitable for use in low-noise environments. The AD8221BRZ is available in a small, 8-lead SOIC package, making it easy to integrate into compact designs.
Its robust performance and ease of use make it suitable for a variety of applications, including medical instrumentation, sensor signal conditioning, and industrial process controls.
Key features of the AD8221BRZ include a gain range of 1 to 1000, set by a single external resistor, low input bias current, and a wide supply voltage range from ±2.3V to ±18V. It also boasts a low input noise of 8 nV/√Hz, making it suitable for use in low-noise environments. The AD8221BRZ is available in a small, 8-lead SOIC package, making it easy to integrate into compact designs.
Its robust performance and ease of use make it suitable for a variety of applications, including medical instrumentation, sensor signal conditioning, and industrial process controls.
Equivalent
The AD8221BRZ is an instrumentation amplifier by Analog Devices. Equivalent products include:
1. INA128/INA129 by Texas Instruments.
2. MAX4198/MAX4199 by Maxim Integrated.
3. LT1167 by Analog Devices (formerly Linear Technology).
4. AD620 by Analog Devices.
These alternatives offer similar functions but may differ in specifications like bandwidth, noise, and supply voltage, so it’s important to compare specific parameters for compatibility with your application.
1. INA128/INA129 by Texas Instruments.
2. MAX4198/MAX4199 by Maxim Integrated.
3. LT1167 by Analog Devices (formerly Linear Technology).
4. AD620 by Analog Devices.
These alternatives offer similar functions but may differ in specifications like bandwidth, noise, and supply voltage, so it’s important to compare specific parameters for compatibility with your application.
Features
The AD8221BRZ is a high-performance instrumentation amplifier known for its precision and versatility. It features low noise, low offset voltage, and high common-mode rejection ratio (CMRR). The device offers a gain range of 1 to 1000, set using a single external resistor. It operates with a wide supply voltage range from ±2.3V to ±18V, making it suitable for various applications. The AD8221BRZ provides a high input impedance and low output impedance, ensuring minimal signal distortion. It is designed with a rail-to-rail output, enhancing its dynamic range. The amplifier is housed in a small, 8-lead SOIC package, making it suitable for space-constrained designs. Additionally, the AD8221BRZ is temperature-stable and robust, performing well across a wide temperature range of -40°C to +85°C. It is commonly used in applications requiring precise amplification, such as sensor signal conditioning, data acquisition systems, and medical instrumentation.
Pinout
The AD8221BRZ is an instrumentation amplifier manufactured by Analog Devices. It comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here is a concise description of its pin functions:
1. Pin 1 (Ref): Reference pin. Used to set the output reference voltage. Typically connected to ground for single-supply applications.
2. Pin 2 (V- or -Vs): Negative power supply pin. Connects to the negative supply voltage.
3. Pin 3 (RG): Gain resistor pin. The gain of the amplifier is set by connecting a resistor between pins 1 and 8.
4. Pin 4 (IN- or -IN1): Negative input pin. Connects to the inverting input signal.
5. Pin 5 (IN+ or +IN2): Positive input pin. Connects to the non-inverting input signal.
6. Pin 6 (RG): Gain resistor pin. Works with pin 3 to set the gain.
7. Pin 7 (V+ or +Vs): Positive power supply pin. Connects to the positive supply voltage.
8. Pin 8 (Out): Output pin. Provides the amplified output signal.
These pins allow the AD8221BRZ to function as a precision instrumentation amplifier suitable for a wide range of signal conditioning applications.
1. Pin 1 (Ref): Reference pin. Used to set the output reference voltage. Typically connected to ground for single-supply applications.
2. Pin 2 (V- or -Vs): Negative power supply pin. Connects to the negative supply voltage.
3. Pin 3 (RG): Gain resistor pin. The gain of the amplifier is set by connecting a resistor between pins 1 and 8.
4. Pin 4 (IN- or -IN1): Negative input pin. Connects to the inverting input signal.
5. Pin 5 (IN+ or +IN2): Positive input pin. Connects to the non-inverting input signal.
6. Pin 6 (RG): Gain resistor pin. Works with pin 3 to set the gain.
7. Pin 7 (V+ or +Vs): Positive power supply pin. Connects to the positive supply voltage.
8. Pin 8 (Out): Output pin. Provides the amplified output signal.
These pins allow the AD8221BRZ to function as a precision instrumentation amplifier suitable for a wide range of signal conditioning applications.
Manufacturer
The AD8221BRZ is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in the design, manufacturing, and marketing of a broad range of integrated circuits. The company is known for its high-performance analog, mixed-signal, and digital signal processing (DSP) technologies, which are used in a wide variety of applications such as industrial, automotive, healthcare, communications, and consumer electronics. Analog Devices is recognized for its innovation in areas like data conversion, signal conditioning, RF, power management, and sensor technologies.
Application
The AD8221BRZ is an instrumentation amplifier known for its precision, low noise, and high CMRR (Common-Mode Rejection Ratio). Its application areas include:
1. Medical Instrumentation: For ECG, EEG, and other biosignal amplifications due to its low noise characteristics.
2. Industrial Process Controls: Used in sensor signal conditioning and data acquisition systems.
3. Weigh Scales: For precise weight measurement in load cells.
4. Strain Gauge Applications: Ideal for precision measurement in structural testing.
5. Audio Applications: In high-fidelity audio equipment requiring minimal signal distortion.
6. Bridge Transducer Interface: Effective in measuring pressure, force, or temperature changes.
These applications benefit from its high accuracy and stability across varying environmental conditions.
1. Medical Instrumentation: For ECG, EEG, and other biosignal amplifications due to its low noise characteristics.
2. Industrial Process Controls: Used in sensor signal conditioning and data acquisition systems.
3. Weigh Scales: For precise weight measurement in load cells.
4. Strain Gauge Applications: Ideal for precision measurement in structural testing.
5. Audio Applications: In high-fidelity audio equipment requiring minimal signal distortion.
6. Bridge Transducer Interface: Effective in measuring pressure, force, or temperature changes.
These applications benefit from its high accuracy and stability across varying environmental conditions.
Package
The AD8221BRZ is a precision instrumentation amplifier from Analog Devices. The "BRZ" suffix indicates that it comes in an 8-lead SOIC (Small Outline Integrated Circuit) package. This type of package is a surface-mount technology that is compact and suitable for automated assembly processes.