Overview
The AD8223ARM, produced by Analog Devices Inc., is an integrated single-supply instrumentation amplifier designed to deliver high performance and versatility in various applications. This amplifier is optimized for operation from a single supply voltage ranging from 3 V to 24 V, but it also performs well with dual supply voltages from ±2 V to ±12 V. The AD8223ARM features a rail-to-rail output swing, which maximizes the dynamic range, especially when operating from low supply voltages. Its low power consumption of 1.5 mW at 3 V makes it ideal for battery-powered applications. The amplifier replaces discrete instrumentation amplifier designs, offering superior linearity, temperature stability, and reliability in a compact 8-lead MSOP or SOIC package.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Gain Range | 5 | - | 1000 | V/V |
| Input Voltage Range | - | - | 150 mV below negative rail | V |
| Input Bias Current | - | - | 25 nA | A |
| Input Voltage Noise @ 1 kHz | - | 30 | - | nV/√Hz |
| Supply Voltage Range (Single Supply) | 3 | - | 24 | V |
| Supply Voltage Range (Dual Supply) | ±2 | - | ±12 | V |
| Quiescent Current | 350 | 500 | - | μA |
| Operating Temperature Range | -40 | - | 85 | °C |
| Common-Mode Rejection Ratio (CMRR) @ G=5 | 80 | 86 | - | dB |
| Slew Rate | 0.2 | - | - | V/μs |
Key Features
- Gain Setting: The gain can be set with a single external resistor, allowing gains from 5 to 1000.
- Rail-to-Rail Output Swing: Provides maximum dynamic range when operating from low supply voltages.
- Low Power Consumption: 1.5 mW at 3 V, making it suitable for battery-powered applications.
- Wide Input Common-Mode Range: Can amplify signals with a common-mode voltage up to 150 mV below ground.
- Compact Packaging: Available in 8-lead MSOP and SOIC packages.
- High Linearity and Temperature Stability: Offers superior performance and reliability compared to discrete designs.
Applications
- Battery-Powered Devices: Ideal due to its low power consumption and wide supply voltage range.
- Medical Devices: Suitable for medical instrumentation where high accuracy and low noise are critical.
- Industrial Automation: Used in various industrial applications requiring precise signal amplification.
- Data Acquisition Systems: Part of single-supply data acquisition systems where rail-to-rail output is beneficial.
- Portable Equipment: Fits well in portable equipment due to its compact size and low power requirements.
Q & A
- What is the gain range of the AD8223ARM?
The gain range of the AD8223ARM is from 5 to 1000, settable with a single external resistor.
- What are the supply voltage ranges for the AD8223ARM?
The AD8223ARM can operate from a single supply voltage of 3 V to 24 V or from a dual supply voltage of ±2 V to ±12 V.
- What is the input bias current of the AD8223ARM?
The input bias current of the AD8223ARM is typically 25 nA.
- What is the input voltage noise of the AD8223ARM at 1 kHz?
The input voltage noise of the AD8223ARM at 1 kHz is 30 nV/√Hz.
- What is the quiescent current of the AD8223ARM?
The quiescent current of the AD8223ARM is typically 500 μA.
- What is the operating temperature range of the AD8223ARM?
The operating temperature range of the AD8223ARM is from -40°C to 85°C.
- What is the common-mode rejection ratio (CMRR) of the AD8223ARM at a gain of 5?
The CMRR of the AD8223ARM at a gain of 5 is typically 86 dB.
- What is the slew rate of the AD8223ARM?
The slew rate of the AD8223ARM is 0.2 V/μs.
- Why is the AD8223ARM suitable for battery-powered applications?
The AD8223ARM is suitable for battery-powered applications due to its low power consumption of 1.5 mW at 3 V.
- What are some common applications of the AD8223ARM?
The AD8223ARM is commonly used in battery-powered devices, medical devices, industrial automation, data acquisition systems, and portable equipment.
