Overview
The AD8221ARZ-R7 is a precision instrumentation amplifier manufactured by Analog Devices Inc. It is distinguished by its high performance, programmable gain, and excellent common-mode rejection ratio (CMRR) over a wide frequency range. This amplifier is designed to deliver the industry’s highest CMRR in its class, maintaining a minimum CMRR of 80 dB up to 10 kHz for all gain settings. It is particularly useful in applications requiring high precision and accuracy, such as precision data acquisition, biomedical analysis, and aerospace instrumentation.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Supply Voltage | VS | ±2.3 | ±18 | V | |
| Quiescent Current | T = −40°C to +85°C | 0.9 | 1 | 1.2 | mA |
| Input Offset Voltage | 60 | µV | |||
| Common-Mode Rejection Ratio (CMRR) | G = 1, to 10 kHz | 80 | dB | ||
| Small Signal −3 dB Bandwidth | G = 1 | 825 | kHz | ||
| Slew Rate | 2 | V/µs | |||
| Operating Temperature Range | −40 | +85 | °C | ||
| Storage Temperature Range | −65 | +150 | °C |
Key Features
The AD8221ARZ-R7 boasts several key features that make it an excellent choice for various applications:
- Programmable Gain: The gain can be set with a single external resistor, allowing a gain range from 1 to 1000.
- High CMRR: Maintains a minimum CMRR of 80 dB up to 10 kHz, ensuring high precision and accuracy in signal processing.
- Wide Power Supply Range: Operates with a supply voltage range of ±2.3 V to ±18 V, making it versatile for different power environments.
- Compact Packaging: Available in 8-lead SOIC and 8-lead MSOP packages, with the MSOP requiring half the board space of the SOIC, ideal for space-constrained applications.
- High Bandwidth and Slew Rate: Features a −3 dB bandwidth of 825 kHz and a slew rate of 2 V/µs at a gain of 1.
- Low Offset and Drift: Low input offset voltage and drift, ensuring high gain accuracy and stability.
Applications
The AD8221ARZ-R7 is suitable for a diverse range of applications, including:
- Precision Data Acquisition: Ideal for systems requiring precise measurement and signal conditioning.
- Biomedical Analysis: Used in medical instrumentation and non-invasive diagnostic tools where accurate signal processing is critical.
- Aerospace Instrumentation: Meets the high performance and reliability requirements of aerospace applications.
- Industrial Automation: Integrates into control systems for manufacturing processes, providing accurate feedback and control signals.
- Environmental Monitoring: Used in sensor systems for measuring atmospheric or water quality parameters.
- Agriculture Technology: Useful in precision farming equipment such as soil nutrient analyzers or crop health monitoring systems.
- Education and Research: Utilized in laboratory equipment and experimental setups requiring precise measurement and signal conditioning.
Q & A
- What is the typical bandwidth of the AD8221ARZ-R7 at a gain of 1?
The typical bandwidth of the AD8221ARZ-R7 at a gain of 1 is 825 kHz.
- How is the gain of the AD8221ARZ-R7 set?
The gain of the AD8221ARZ-R7 is set using a single external resistor across the RG pins, allowing a gain range from 1 to 1000.
- What is the minimum CMRR of the AD8221ARZ-R7 up to 10 kHz?
The minimum CMRR of the AD8221ARZ-R7 up to 10 kHz is 80 dB.
- What are the operating and storage temperature ranges for the AD8221ARZ-R7?
The operating temperature range is −40°C to +85°C, and the storage temperature range is −65°C to +150°C.
- What are the typical package options for the AD8221ARZ-R7?
The AD8221ARZ-R7 is available in 8-lead SOIC and 8-lead MSOP packages.
- What is the slew rate of the AD8221ARZ-R7?
The slew rate of the AD8221ARZ-R7 is 2 V/µs.
- What are some common applications for the AD8221ARZ-R7?
Common applications include precision data acquisition, biomedical analysis, aerospace instrumentation, industrial automation, environmental monitoring, and agriculture technology.
- What is the maximum supply current of the AD8221ARZ-R7?
The maximum supply current of the AD8221ARZ-R7 is 1.2 mA over the operating temperature range.
- Is the AD8221ARZ-R7 RoHS compliant?
- Where can I find the AD8221ARZ-R7 for purchase?
The AD8221ARZ-R7 can be sourced from distributors such as Mouser Electronics, DigiKey, Farnell, and LCSC. You can also use resources like findchips.com to compare stock levels and pricing.
