Overview
The AD8223ARMZ, produced by Analog Devices Inc., is an integrated single-supply instrumentation amplifier. It is designed to deliver rail-to-rail output swing on a single supply ranging from 3V to 24V, and it also performs well with dual voltage supplies from ±2V to ±12V. This amplifier is notable for its simplicity, as the gain can be set with just one external resistor, allowing gains from 5 to 1000. The AD8223ARMZ features a wide input common-mode range, enabling it to amplify signals with a common-mode voltage up to 150 mV below ground. It is optimized for low power consumption, making it ideal for battery-powered applications, and it offers superior linearity, temperature stability, and reliability in a compact package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Gain Range | 5 to 1000 | V/V |
| Input Bias Current | 25 nA (max) | nA |
| Voltage Noise | 30 nV/√Hz (RTI noise at 1 kHz) | nV/√Hz |
| Supply Voltage Range | Single Supply: 3V to 24V, Dual Supply: ±2V to ±12V | V |
| Supply Current | 500 μA (max) | μA |
| Slew Rate | 0.2 V/μs (at TA = 25°C, −VS = 0V, +VS = +5V, and RL = 10 kΩ to 2.5V) | V/μs |
| Settling Time to 0.01% | 18 μs (G = 5, step size = 3.5V), 85 μs (G = 1000, step size = 3.5V) | μs |
| Operating Temperature Range | −40°C to +85°C | °C |
| Package Type | 8-Lead MSOP, 8-Lead SOIC |
Key Features
- Gain Setting: Gain can be set with a single external resistor, allowing gains from 5 to 1000.
- Input Characteristics: Wide input common-mode range, allowing amplification of signals with a common-mode voltage up to 150 mV below ground.
- Power Supply Flexibility: Operates on single supply (3V to 24V) or dual supply (±2V to ±12V).
- Low Power Consumption: 1.5 mW at 3V, making it suitable for battery-powered applications.
- Rail-to-Rail Output: Maximizes dynamic range when operating from low supply voltages.
- High Linearity and Temperature Stability: Offers superior linearity and temperature stability, replacing discrete instrumentation amplifier designs.
Applications
- Low Power Medical Instrumentation: Ideal for medical devices requiring low power consumption and high accuracy.
- Transducer Interface: Suitable for interfacing with various transducers due to its wide input common-mode range and high gain flexibility.
- Thermocouple Amplifiers: Used in thermocouple applications where precision and stability are crucial.
- Industrial Process Controls: Applied in industrial settings for precise signal amplification and control.
- Difference Amplifiers: Utilized in difference amplifier configurations where high accuracy and low noise are required).
- Low Power Data Acquisition: Suitable for data acquisition systems that need low power consumption and high signal integrity).
Q & A
- What is the gain range of the AD8223ARMZ?
The gain range of the AD8223ARMZ is from 5 to 1000, settable with a single external resistor.
- What is the input bias current of the AD8223ARMZ?
The input bias current of the AD8223ARMZ is 25 nA maximum.
- What is the voltage noise of the AD8223ARMZ?
The voltage noise of the AD8223ARMZ is 30 nV/√Hz at 1 kHz.
- What are the supply voltage ranges for the AD8223ARMZ?
The AD8223ARMZ can operate on a single supply from 3V to 24V or a dual supply from ±2V to ±12V.
- What is the maximum supply current of the AD8223ARMZ?
The maximum supply current of the AD8223ARMZ is 500 μA.
- What is the slew rate of the AD8223ARMZ?
The slew rate of the AD8223ARMZ is 0.2 V/μs under specified conditions.
- What is the settling time to 0.01% for the AD8223ARMZ?
The settling time to 0.01% for the AD8223ARMZ is 18 μs for G = 5 and 85 μs for G = 1000.
- What is the operating temperature range of the AD8223ARMZ?
The operating temperature range of the AD8223ARMZ is from −40°C to +85°C.
- In what packages is the AD8223ARMZ available?
The AD8223ARMZ is available in 8-Lead MSOP and 8-Lead SOIC packages.
- What are some common applications of the AD8223ARMZ?
The AD8223ARMZ is commonly used in low power medical instrumentation, transducer interfaces, thermocouple amplifiers, industrial process controls, difference amplifiers, and low power data acquisition systems.
