Overview
The AD8221BR is a precision instrumentation amplifier produced by Analog Devices Inc. It is designed for precise measurements in various applications, offering high common-mode rejection ratio (CMRR), low offset voltage, and a small noise floor. This amplifier is fully isolated, eliminating potential noise and interference issues, and requires minimal maintenance with zero adjustment needed. The AD8221BR features a wide power supply tolerance and excellent stability under varying temperature conditions, making it reliable in harsh environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 1 Channel | |
| 3 dB Bandwidth | 825 kHz | |
| CMRR - Common Mode Rejection Ratio | 130 dB | |
| Input Bias Current | 200 pA | |
| Input Offset Voltage | 60 µV | |
| Supply Voltage - Max | 18 V | |
| Supply Voltage - Min | 2.3 V | |
| Operating Supply Current | 1 mA | |
| Minimum Operating Temperature | -40°C | |
| Maximum Operating Temperature | +85°C | |
| Mounting Style | SMD/SMT | |
| Amplifier Type | Instrumentation Amplifier | |
| Slew Rate | 2 V/µs | |
| Package/Case | SOIC-8 |
Key Features
- Precision instrumentation amplifier with low noise floor
- High common-mode rejection ratio for precise measurements
- Fully isolated to prevent noise and interference
- Maintenance-free, zero adjustment required
- Wide power supply tolerance for flexibility
- Low distortion and high dynamic range ensured
- Gain set with 1 external resistor (gain range 1 to 1000)
- Operates on both single and dual supplies
Applications
- Precision data acquisition systems
- Bridge amplifiers
- Strain gages and transducer interfaces
- Medical instrumentation
- Industrial automation and process control
- Biomedical analysis and aerospace instrumentation
- Weigh scales and industrial process controls
Q & A
- What is the AD8221BR used for?
The AD8221BR is a precision instrumentation amplifier used for precise measurements in various applications, including precision data acquisition, medical instrumentation, and industrial automation.
- What is the common-mode rejection ratio (CMRR) of the AD8221BR?
The CMRR of the AD8221BR is 130 dB.
- What is the input offset voltage of the AD8221BR?
The input offset voltage of the AD8221BR is 60 µV.
- What is the operating temperature range of the AD8221BR?
The operating temperature range of the AD8221BR is -40°C to +85°C.
- How is the gain of the AD8221BR set?
The gain of the AD8221BR is set with 1 external resistor, allowing a gain range from 1 to 1000.
- What type of package does the AD8221BR come in?
The AD8221BR comes in an 8-pin Small Outline Package (SOIC).
- Does the AD8221BR require any adjustments?
No, the AD8221BR is maintenance-free and requires zero adjustment.
- What is the slew rate of the AD8221BR?
The slew rate of the AD8221BR is 2 V/µs.
- Can the AD8221BR operate on both single and dual supplies?
- What are some typical applications of the AD8221BR?
Typical applications include precision data acquisition systems, medical instrumentation, industrial automation, and aerospace instrumentation.
