Спецификации
| Атрибут | Ценность |
| Package | Tube |
| ProductStatus | Active |
| AmplifierType | Instrumentation |
| NumberofCircuits | 1 |
| SlewRate | 35V/µs |
| -3dbBandwidth | 10 MHz |
| Current-InputBias | 100 pA |
| Voltage-InputOffset | 25 µV |
| Current-Supply | 2mA |
| Current-Output/Channel | 65 mA |
| Voltage-SupplySpan(Min) | 5 V |
| Voltage-SupplySpan(Max) | 36 V |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Обзор
Description
The AD8421BRZ is a high-performance instrumentation amplifier produced by Analog Devices. It is designed for precision signal conditioning and offers a balance of low noise, high speed, and low power consumption. The amplifier features a wide gain range, typically from 1 to 1000, which can be easily set with an external resistor. It operates over a wide supply voltage range, typically ±2.3 V to ±18 V, making it suitable for a variety of applications.
The AD8421BRZ offers excellent common-mode rejection ratio (CMRR), making it ideal for applications requiring high precision, such as medical instrumentation, data acquisition systems, and industrial process controls. Its low harmonic distortion and low DC errors further enhance its performance. The device is available in a compact SOIC-8 package, making it easy to integrate into space-constrained designs. Additionally, the AD8421BRZ is designed to operate over a wide temperature range, ensuring reliable performance in various environmental conditions. Overall, the AD8421BRZ is a versatile and robust choice for applications requiring high precision and reliability.
The AD8421BRZ offers excellent common-mode rejection ratio (CMRR), making it ideal for applications requiring high precision, such as medical instrumentation, data acquisition systems, and industrial process controls. Its low harmonic distortion and low DC errors further enhance its performance. The device is available in a compact SOIC-8 package, making it easy to integrate into space-constrained designs. Additionally, the AD8421BRZ is designed to operate over a wide temperature range, ensuring reliable performance in various environmental conditions. Overall, the AD8421BRZ is a versatile and robust choice for applications requiring high precision and reliability.
Equivalent
The AD8421BRZ is a high-performance instrumentation amplifier. Equivalent products from other manufacturers include the INA128 from Texas Instruments, LT1167 from Analog Devices (formerly Linear Technology), and MAX4209 from Maxim Integrated. These alternatives offer similar functionality, but it is important to compare specifications such as bandwidth, gain accuracy, input noise, and supply voltage to ensure compatibility with your specific application.
Features
The AD8421BRZ is a high-performance instrumentation amplifier featuring low noise, high precision, and low power consumption. Key features include:
1. Low Noise: It offers a low input voltage noise of 3 nV/√Hz, suitable for precision applications.
2. High Accuracy: The device provides low offset voltage (35 µV max) and low offset voltage drift (0.4 µV/°C max).
3. Wide Bandwidth: With a 10 MHz bandwidth and a 15 V/µs slew rate, it supports fast signal processing.
4. High Common-Mode Rejection Ratio (CMRR): Up to 126 dB at DC, ensuring better differential signal accuracy.
5. Low Power: Operates with a low supply current of 2 mA, suitable for battery-powered applications.
6. Wide Supply Voltage Range: Works with dual supply voltages from ±2.3 V to ±18 V.
7. Gain Flexibility: Gain can be set with a single external resistor, allowing for easy configuration.
8. Temperature Range: Operates over an extended industrial temperature range of -40°C to +85°C.
9. Package: Available in an 8-lead SOIC package, providing a compact form factor for various applications.
These features make the AD8421BRZ ideal for medical, industrial, and instrumentation applications.
1. Low Noise: It offers a low input voltage noise of 3 nV/√Hz, suitable for precision applications.
2. High Accuracy: The device provides low offset voltage (35 µV max) and low offset voltage drift (0.4 µV/°C max).
3. Wide Bandwidth: With a 10 MHz bandwidth and a 15 V/µs slew rate, it supports fast signal processing.
4. High Common-Mode Rejection Ratio (CMRR): Up to 126 dB at DC, ensuring better differential signal accuracy.
5. Low Power: Operates with a low supply current of 2 mA, suitable for battery-powered applications.
6. Wide Supply Voltage Range: Works with dual supply voltages from ±2.3 V to ±18 V.
7. Gain Flexibility: Gain can be set with a single external resistor, allowing for easy configuration.
8. Temperature Range: Operates over an extended industrial temperature range of -40°C to +85°C.
9. Package: Available in an 8-lead SOIC package, providing a compact form factor for various applications.
These features make the AD8421BRZ ideal for medical, industrial, and instrumentation applications.
Pinout
The AD8421BRZ is a precision instrumentation amplifier manufactured by Analog Devices. It comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here’s a brief overview of the pin functions:
1. Pin 1 (REF): Reference pin. It sets the output reference voltage.
2. Pin 2 (RG-): Gain resistor negative input. Used to set the gain.
3. Pin 3 (RG+): Gain resistor positive input. Used to set the gain.
4. Pin 4 (-IN): Negative input.
5. Pin 5 (+IN): Positive input.
6. Pin 6 (-VS): Negative supply voltage.
7. Pin 7 (OUT): Output pin.
8. Pin 8 (+VS): Positive supply voltage.
The AD8421 is designed for high accuracy, low noise, and high-speed applications, providing a high common-mode rejection ratio (CMRR) and low distortion, making it suitable for various precision data acquisition systems. The gain can be set from 1 to 1000 using an external resistor between RG+ and RG-.
1. Pin 1 (REF): Reference pin. It sets the output reference voltage.
2. Pin 2 (RG-): Gain resistor negative input. Used to set the gain.
3. Pin 3 (RG+): Gain resistor positive input. Used to set the gain.
4. Pin 4 (-IN): Negative input.
5. Pin 5 (+IN): Positive input.
6. Pin 6 (-VS): Negative supply voltage.
7. Pin 7 (OUT): Output pin.
8. Pin 8 (+VS): Positive supply voltage.
The AD8421 is designed for high accuracy, low noise, and high-speed applications, providing a high common-mode rejection ratio (CMRR) and low distortion, making it suitable for various precision data acquisition systems. The gain can be set from 1 to 1000 using an external resistor between RG+ and RG-.
Manufacturer
The AD8421BRZ is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in the design and production of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company focuses on creating solutions for a wide range of industries, including communications, healthcare, automotive, and industrial automation. Analog Devices is known for its high-performance products such as amplifiers, data converters, sensors, and radio frequency (RF) components. The AD8421BRZ, specifically, is an instrumentation amplifier, which is used for precise low-level signal amplification in electronic applications.
Application
The AD8421BRZ is an instrumentation amplifier known for its high precision and low noise, making it ideal for a variety of applications. Key areas include medical instrumentation for ECG and EEG measurements, industrial process controls for accurate data acquisition, and sensor interfacing for strain gauges and thermocouples. Its high CMRR and low offset voltage are advantageous in precision data logging and test equipment. Additionally, the AD8421BRZ is used in signal conditioning for seismology and geophysical applications, as well as in audio equipment where high fidelity is necessary. Its robust performance in harsh environments also makes it suitable for aerospace and defense applications.
Package
The AD8421BRZ is an instrumentation amplifier from Analog Devices. It comes in a standard SOIC (Small Outline Integrated Circuit) package, specifically an 8-lead SOIC with a narrow body. This package type is suitable for surface-mount applications, providing a compact form while maintaining good electrical performance.