Overview
The AD8228ARMZ-RL, produced by Analog Devices Inc., is a high-performance instrumentation amplifier known for its very high gain accuracy and low gain drift. This amplifier is designed to operate on both single and dual supplies, with a wide power supply range of ±2.3 V to ±18 V, making it suitable for applications where high common-mode input voltages are encountered. The AD8228ARMZ-RL is available in an 8-lead MSOP package and is operational over the entire industrial temperature range of −40°C to +85°C, with extended operation up to +125°C.
Key Specifications
| Specification | Value |
|---|---|
| Gain Settings | Pin strappable gains of 10 and 100 |
| Power Supply Range | ±2.3 V to ±18 V |
| Gain Drift (B Grade, G = 10) | 2 ppm/°C |
| Gain Error (B Grade, G = 10) | 0.02% |
| Input Offset Voltage | 50 μV maximum |
| Input Offset Drift | 0.8 μV/°C maximum |
| Input Bias Current | 0.6 nA maximum |
| Common-Mode Rejection Ratio (CMRR) | 100 dB |
| Bandwidth (G = 10) | 650 kHz, –3 dB |
| Slew Rate | 2 V/μs |
| Noise (G = 100) | 8 nV/√Hz @ 1 kHz, 0.3 μV p-p from 0.1 Hz to 10 Hz |
| Package Type | 8-lead MSOP |
| Operating Temperature Range | −40°C to +85°C (industrial), up to +125°C |
Key Features
- High gain accuracy due to internal and laser-trimmed gain setting resistors.
- Low gain drift and low offset drift, ensuring stable performance over temperature changes.
- Wide power supply range, making it versatile for various applications.
- High CMRR of 100 dB, providing excellent common-mode rejection.
- Low noise characteristics, with 8 nV/√Hz at 1 kHz and 0.3 μV p-p from 0.1 Hz to 10 Hz (G = 100).
- Easy to use with pin strappable gains of 10 and 100.
- Available in 8-lead MSOP and SOIC packages.
Applications
- Weigh scales
- Industrial process controls
- Bridge amplifiers
- Precision data acquisition systems
- Medical instrumentation
- Strain gages
- Transducer interfaces
Q & A
- What is the AD8228ARMZ-RL used for? The AD8228ARMZ-RL is a high-performance instrumentation amplifier used in applications requiring high gain accuracy and low gain drift, such as weigh scales, industrial process controls, and medical instrumentation.
- What are the available gain settings for the AD8228ARMZ-RL? The AD8228ARMZ-RL has pin strappable gains of 10 and 100.
- What is the power supply range of the AD8228ARMZ-RL? The power supply range is ±2.3 V to ±18 V.
- What is the gain drift of the AD8228ARMZ-RL? The gain drift is 2 ppm/°C for the B Grade at a gain of 10.
- What is the input offset voltage of the AD8228ARMZ-RL? The maximum input offset voltage is 50 μV.
- What is the common-mode rejection ratio (CMRR) of the AD8228ARMZ-RL? The CMRR is 100 dB.
- What is the bandwidth of the AD8228ARMZ-RL at a gain of 10? The bandwidth is 650 kHz at –3 dB.
- What is the slew rate of the AD8228ARMZ-RL? The slew rate is 2 V/μs.
- What are the noise specifications of the AD8228ARMZ-RL at a gain of 100? The noise is 8 nV/√Hz at 1 kHz and 0.3 μV p-p from 0.1 Hz to 10 Hz.
- In what temperature range does the AD8228ARMZ-RL operate? The AD8228ARMZ-RL operates over the industrial temperature range of −40°C to +85°C and can extend up to +125°C.
