Overview
The ADR421AR-REEL7 is a high-precision voltage reference IC produced by Analog Devices Inc. This device is specifically designed for use in power management applications and is known for its high accuracy, stability, and low noise characteristics. The ADR421AR-REEL7 provides an output voltage of 2.5V with a tolerance of ±1% and features a low dropout voltage, making it suitable for systems with unregulated power supply voltages. It is packaged in a compact 8-SOIC package and uses surface mount technology, making it ideal for modern electronics designs. The device operates over an extended industrial temperature range of -40°C to 125°C, ensuring reliability in a wide range of applications.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Output Voltage | VOUT | A Grade | 2.497 | 2.500 | 2.503 | V |
| Output Voltage | VOUT | B Grade | 2.499 | 2.500 | 2.501 | V |
| Initial Accuracy | VOUTERR | A Grade | -3 | - | +3 | mV |
| Initial Accuracy | VOUTERR | B Grade | -1 | - | +1 | mV |
| Temperature Coefficient | TCVOUT | A Grade | 2 | - | 10 | ppm/°C |
| Temperature Coefficient | TCVOUT | B Grade | 1 | - | 3 | ppm/°C |
| Supply Voltage Headroom | VIN - VOUT | - | - | 2 | V | |
| Line Regulation | ΔVOUT/ΔVIN | VIN = 5 V to 18 V | 10 | - | 35 | ppm/V |
| Mounting Type | - | - | - | Surface Mount | - | |
| Package/Case | - | - | - | 8-SOIC | - | |
| Operating Temperature Range | - | - | - | -40°C to 125°C | - |
Key Features
- Output Voltage: 2.5V ±1%
- Low Dropout Voltage: Suitable for systems with unregulated power supply voltages
- High Accuracy and Stability: Ensures precise and stable output voltage
- Extremely Low Noise: Reduces the impact on system performance
- Compact 8-SOIC Package: Ideal for modern electronics designs using surface mount technology
- Wide Operating Temperature Range: -40°C to 125°C, suitable for various applications
- Adjustable Output Voltage: Trim terminal allows adjustment over a ±0.5% range without compromising performance
Applications
- Power Management Systems: Ideal for systems requiring stable and accurate voltage references
- Automotive Electronics: Suitable for the demanding temperature and reliability requirements of automotive applications
- Industrial Control Systems: Provides stable voltage references in industrial environments
- Medical Devices: Used in precision medical equipment requiring high accuracy and stability
- Telecommunications Equipment: Ensures reliable operation in telecommunications systems
Q & A
- What is the output voltage of the ADR421AR-REEL7?
The output voltage of the ADR421AR-REEL7 is 2.5V with a tolerance of ±1%.
- What is the package type of the ADR421AR-REEL7?
The ADR421AR-REEL7 is packaged in an 8-SOIC package.
- What is the operating temperature range of the ADR421AR-REEL7?
The operating temperature range is -40°C to 125°C.
- Does the ADR421AR-REEL7 have adjustable output voltage?
Yes, the output voltage can be adjusted over a ±0.5% range using the trim terminal.
- What are some typical applications of the ADR421AR-REEL7?
Typical applications include power management systems, automotive electronics, industrial control systems, medical devices, and telecommunications equipment.
- What is the noise characteristic of the ADR421AR-REEL7?
The ADR421AR-REEL7 is known for its extremely low noise, which reduces the impact on system performance).
- How does the ADR421AR-REEL7 handle temperature drift?
The device uses patented temperature drift curvature correction techniques and XFET technology to minimize nonlinearity of the voltage change with temperature).
- What is the supply voltage headroom for the ADR421AR-REEL7?
The supply voltage headroom is 2V).
- Is the ADR421AR-REEL7 suitable for battery-powered applications?
Yes, it is suitable for 5V battery-powered applications due to its low power consumption).
- What is the line regulation of the ADR421AR-REEL7?
The line regulation is 10 to 35 ppm/V over the supply voltage range of 5V to 18V).
