Overview
The AD8228ARMZ, produced by Analog Devices Inc., is a high-performance instrumentation amplifier known for its very high gain accuracy. This amplifier features internal and laser-trimmed gain setting resistors, which enhance its gain accuracy and reduce gain drift. It 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 involving high common-mode input voltages. The AD8228ARMZ is available in 8-lead MSOP and SOIC packages and is specified over the entire industrial temperature range of −40°C to +85°C, with operational capabilities extending to −40°C to +125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Gain | 10, 100 | - |
| Gain Drift | 2 ppm/°C | - |
| Gain Error | 0.02% | - |
| Input Offset Voltage | 50 μV | μV |
| Input Offset Drift | 0.8 μV/°C | μV/°C |
| Input Bias Current | 0.6 nA | nA |
| Common-Mode Rejection Ratio (CMRR) | 100 dB | dB |
| Bandwidth (G = 10) | 650 kHz | kHz |
| Slew Rate | 2 V/μs | V/μs |
| Noise (G = 100, @ 1 kHz) | 8 nV/√Hz | nV/√Hz |
| Power Supply Range | ±2.3 V to ±18 V | V |
| Operating Temperature Range | −40°C to +85°C | °C |
| Maximum Junction Temperature | 140°C | °C |
Key Features
- High gain accuracy due to internal and laser-trimmed gain setting resistors.
- Low gain drift of 2 ppm/°C.
- Low input offset voltage and drift.
- High common-mode rejection ratio (CMRR) of 100 dB.
- Wide power supply range: ±2.3 V to ±18 V.
- Pin strappable gains of 10 and 100.
- Low noise: 8 nV/√Hz at 1 kHz (G = 100).
- Operates on both single and dual supplies.
- 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 are the available gain settings for the AD8228ARMZ?
The AD8228ARMZ has pin strappable gains of 10 and 100.
- What is the power supply range for the AD8228ARMZ?
The power supply range is ±2.3 V to ±18 V.
- What is the common-mode rejection ratio (CMRR) of the AD8228ARMZ?
The CMRR is 100 dB.
- What are the typical noise specifications for the AD8228ARMZ?
The noise is 8 nV/√Hz at 1 kHz (G = 100).
- What are the operating temperature ranges for the AD8228ARMZ?
The specified performance temperature range is −40°C to +85°C, and it is operational from −40°C to +125°C.
- What types of packages are available for the AD8228ARMZ?
The AD8228ARMZ is available in 8-lead MSOP and SOIC packages.
- What is the maximum junction temperature for the AD8228ARMZ?
The maximum junction temperature is 140°C.
- What are some common applications for the AD8228ARMZ?
Common applications include weigh scales, industrial process controls, bridge amplifiers, precision data acquisition systems, medical instrumentation, strain gages, and transducer interfaces.
- How does the AD8228ARMZ handle high common-mode input voltages?
The AD8228ARMZ is well suited for applications where high common-mode input voltages are encountered due to its ability to operate on supplies up to ±18 V.
- What is the slew rate of the AD8228ARMZ?
The slew rate is 2 V/μs.
