Overview
The AD8228BRZ-R7, produced by Analog Devices Inc., is a high-performance instrumentation amplifier known for its low gain drift and high precision. This device is designed to operate with very high gain accuracy, thanks to its internal and laser-trimmed gain setting resistors. It is suitable for a wide range of applications requiring precise signal conditioning, including those involving high common-mode input voltages. The AD8228BRZ-R7 can operate on both single and dual supplies, with a power supply range of ±2.3 V to ±18 V, and is available in 8-lead MSOP and SOIC packages. It performs optimally over the industrial temperature range of −40°C to +85°C and is operational up to +125°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Gain Drift (B Grade, G = 10) | 2 ppm/°C | |||
| Gain Error (B Grade, G = 10) | 0.02% | |||
| Input Offset Voltage | 50 μV | |||
| Input Offset Drift | 0.8 μV/°C | |||
| Input Bias Current | 0.6 nA | |||
| CMRR | 100 dB | |||
| Bandwidth (G = 10) | 650 kHz, –3 dB | |||
| Slew Rate | 2 V/μs | |||
| Noise (G = 100, @ 1 kHz) | 8 nV/√Hz | |||
| Power Supply Range | ±2.3 V | ±18 V | V | |
| Operating Temperature Range | −40°C | +85°C | °C | |
| Extended Operating Temperature Range | −40°C | +125°C | °C |
Key Features
- High Gain Accuracy: Internal and laser-trimmed gain setting resistors ensure high gain accuracy and low gain drift.
- Low Noise: 8 nV/√Hz at 1 kHz (G = 100) and 0.3 μV p-p from 0.1 Hz to 10 Hz (G = 100).
- Wide Power Supply Range: Operates on supplies from ±2.3 V to ±18 V, making it suitable for applications with high common-mode input voltages.
- High CMRR: 100 dB common-mode rejection ratio.
- Flexible Packaging: Available in 8-lead MSOP and SOIC packages.
- Temperature Stability: Specified performance over the industrial temperature range of −40°C to +85°C and operational up to +125°C.
Applications
- Weigh Scales: Precision signal conditioning for weight measurement systems.
- Industrial Process Controls: Accurate signal amplification in industrial process monitoring and control systems.
- Bridge Amplifiers: Ideal for bridge signal conditioning due to its high gain accuracy and low drift.
- Precision Data Acquisition Systems: Ensures high precision in data acquisition applications.
- Medical Instrumentation: Used in medical devices requiring precise signal conditioning.
- Strain Gages and Transducer Interfaces: Suitable for applications involving strain gages and transducer interfaces.
Q & A
- What is the gain drift of the AD8228BRZ-R7?
The gain drift of the AD8228BRZ-R7 is 2 ppm/°C for the B Grade with a gain of 10.
- What is the input offset voltage of the AD8228BRZ-R7?
The maximum input offset voltage is 50 μV).
- What is the common-mode rejection ratio (CMRR) of the AD8228BRZ-R7?
The CMRR is 100 dB).
- What is the bandwidth of the AD8228BRZ-R7 at a gain of 10?
The bandwidth is 650 kHz at a gain of 10).
- What is the slew rate of the AD8228BRZ-R7?
The slew rate is 2 V/μs).
- What are the available package types for the AD8228BRZ-R7?
The AD8228BRZ-R7 is available in 8-lead MSOP and SOIC packages).
- What is the operating temperature range of the AD8228BRZ-R7?
The specified performance temperature range is −40°C to +85°C, and it is operational up to +125°C).
- What are some typical applications of the AD8228BRZ-R7?
Typical applications include weigh scales, industrial process controls, bridge amplifiers, precision data acquisition systems, medical instrumentation, strain gages, and transducer interfaces).
- What is the power supply range of the AD8228BRZ-R7?
The power supply range is from ±2.3 V to ±18 V).
- How does the AD8228BRZ-R7 handle noise?
The AD8228BRZ-R7 has a low noise specification of 8 nV/√Hz at 1 kHz (G = 100) and 0.3 μV p-p from 0.1 Hz to 10 Hz (G = 100)).
