Overview
The AD8221BR-REEL is a precision instrumentation amplifier produced by Analog Devices Inc. This high-performance IC is designed for reliable and consistent amplification of electronic signals, making it ideal for precise measurements in various applications. It features a high common-mode rejection ratio (CMRR), low offset voltage, and a small noise floor, which are crucial for noise-prone environments. The amplifier is fully isolated, eliminating potential noise and interference issues, and requires zero adjustment, ensuring minimal maintenance. It operates over a wide power supply range and maintains excellent stability under varying temperature conditions, making it reliable in harsh environments.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | AD8221BR-REEL |
| Number of Channels | 1 Channel |
| Package Type | 8-Lead Standard Small Outline Package (SOIC) |
| Power Supply Range | ±2.3 V to ±18 V |
| Common Mode Rejection Ratio (CMRR) | 130 dB (typical), 90 dB minimum at G = 1 |
| Input Offset Voltage | 25 µV maximum |
| Input Bias Current | 0.5 nA to 2 nA |
| -3 dB Bandwidth | 825 kHz at G = 1 |
| Slew Rate | 2 V/µs |
| Operating Temperature Range | -40°C to +85°C |
| Output Current per Channel | 18 mA |
| Power Dissipation | 200 mW |
Key Features
- Precision instrumentation amplifier with low noise floor and high CMRR 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 programmable with an external resistor (gain range 1 to 1000).
- Excellent stability under varying temperature conditions.
Applications
- Weigh scales and industrial process controls.
- Bridge amplifiers and precision data acquisition systems.
- Medical instrumentation and strain gage interfaces.
- Transducer interfaces and control power systems.
- Aerospace instrumentation and biomedical analysis.
- Industrial automation and process control.
Q & A
- What is the primary function of the AD8221BR-REEL?
The AD8221BR-REEL is a precision instrumentation amplifier designed for precise measurements and reliable amplification of electronic signals. - What is the common-mode rejection ratio (CMRR) of the AD8221BR-REEL?
The CMRR is typically 130 dB, with a minimum of 90 dB at a gain of 1. - What is the input offset voltage of the AD8221BR-REEL?
The input offset voltage is 25 µV maximum. - What is the power supply range for the AD8221BR-REEL?
The power supply range is ±2.3 V to ±18 V. - What is the -3 dB bandwidth of the AD8221BR-REEL at a gain of 1?
The -3 dB bandwidth is 825 kHz at a gain of 1. - Is the AD8221BR-REEL RoHS compliant?
No, the AD8221BR-REEL contains lead and is not RoHS compliant. - What is the operating temperature range for the AD8221BR-REEL?
The operating temperature range is -40°C to +85°C. - Can the gain of the AD8221BR-REEL be adjusted?
Yes, the gain can be programmed with an external resistor, offering a gain range from 1 to 1000. - What are some common applications of the AD8221BR-REEL?
Common applications include weigh scales, industrial process controls, medical instrumentation, and aerospace instrumentation. - What is the slew rate of the AD8221BR-REEL?
The slew rate is 2 V/µs.
