Overview
The AD8223ARM-RL, produced by Analog Devices Inc., is an integrated single-supply instrumentation amplifier designed to deliver high performance in a compact package. It operates on a single supply voltage ranging from 3 V to 24 V and can also function with dual supplies from ±2 V to ±12 V. This amplifier is notable for its rail-to-rail output swing, low power consumption, and wide input common-mode range, making it ideal for battery-powered applications and replacing discrete instrumentation amplifier designs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage Range | 3 | - | 24 | V |
| Dual Supply Voltage Range | ±2 | - | ±12 | V |
| Quiescent Current | 350 | - | 500 | μA |
| Input Bias Current | - | 25 | 20 | nA |
| Gain Range | 5 | - | 1000 | V/V |
| Common-Mode Rejection Ratio (CMRR) | 80 | 86 | 96 | dB |
| Slew Rate | 0.2 | - | 0.3 | V/μs |
| Settling Time to 0.01% | 18 | - | 150 | μs |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package Type | - | - | 8-Lead MSOP | - |
Key Features
- Rail-to-Rail Output Swing: The AD8223 provides a rail-to-rail output swing, maximizing the dynamic range when operating from low supply voltages.
- Wide Input Common-Mode Range: The amplifier can amplify signals with a common-mode voltage up to 150 mV below the negative supply rail.
- Low Power Consumption: With a quiescent current of 350 μA to 500 μA, it is suitable for battery-powered applications.
- Single Resistor Gain Setting: The gain can be set with a single external resistor, allowing gains from 5 to 1000.
- High CMRR and Linearity: Offers high common-mode rejection ratio and excellent linearity, ensuring reliable performance.
- Compact Package: Available in an 8-lead MSOP package, making it ideal for space-constrained designs.
Applications
The AD8223 is versatile and can be used in a variety of applications, including:
- Battery-Powered Devices: Its low power consumption makes it ideal for battery-powered instruments and portable equipment.
- Medical Devices: Suitable for medical instrumentation due to its high CMRR and low noise characteristics.
- Industrial Automation: Used in industrial control systems and sensors where high accuracy and reliability are required.
- Aerospace and Defense: Its robust performance and compact size make it suitable for aerospace and defense applications.
Q & A
- What is the supply voltage range for the AD8223?
The AD8223 can operate on a single supply voltage from 3 V to 24 V and with dual supplies from ±2 V to ±12 V.
- How is the gain set on the AD8223?
The gain can be set using a single external resistor, allowing gains from 5 to 1000.
- What is the input bias current of the AD8223?
The input bias current is typically 25 nA.
- What is the common-mode rejection ratio (CMRR) of the AD8223?
The CMRR ranges from 80 dB to 96 dB depending on the gain setting.
- What is the slew rate of the AD8223?
The slew rate is typically 0.2 V/μs to 0.3 V/μs.
- What is the operating temperature range of the AD8223?
The operating temperature range is from -40°C to 85°C.
- What package types are available for the AD8223?
The AD8223 is available in an 8-lead MSOP package.
- Is the AD8223 suitable for battery-powered applications?
Yes, it is suitable due to its low power consumption of 1.5 mW at 3 V.
- What are some typical applications of the AD8223?
Typical applications include battery-powered devices, medical devices, industrial automation, and aerospace and defense.
- How does the AD8223 compare to discrete instrumentation amplifier designs?
The AD8223 offers superior linearity, temperature stability, and reliability in a more compact space compared to discrete designs.
