Overview
The ADR421ARMZ-REEL7 is a high-precision voltage reference from Analog Devices Inc., part of the ADR42x series. This device is known for its ultraprecision, low noise, and excellent long-term stability, making it ideal for various precision applications. The ADR421ARMZ-REEL7 features Analog Devices' patented XFET (eXtra implanted junction FET) technology, which minimizes nonlinearity of the voltage change with temperature and offers superior accuracy and thermal hysteresis compared to traditional band gap references. It operates in an extended industrial temperature range of −40°C to +125°C and is available in an 8-lead MSOP package.
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 | |
| Load Regulation | ΔVOUT/ΔIL | IL = 0 mA to 10 mA | 70 | ppm/mA | ||
| Quiescent Current | IIN | No load | 390 | 500 | 600 | µA |
Key Features
- Ultraprecision and Low Noise: The ADR421ARMZ-REEL7 features high precision and low noise, making it suitable for applications requiring stable voltage references.
- XFET Technology: Utilizes Analog Devices' patented XFET technology, which offers superior accuracy and thermal hysteresis compared to traditional band gap references.
- Temperature Drift Curvature Correction: Minimizes nonlinearity of the voltage change with temperature, ensuring stable output across a wide temperature range.
- Adjustable Output Voltage: The trim terminal can be used to adjust the output voltage over a ±0.5% range without compromising other performance parameters.
- Low Power and Supply Headroom: Operates at lower power and lower supply headroom than buried Zener references.
- Compact Packaging: Available in 8-lead MSOP and SOIC packages, with the MSOP being 30% smaller than the SOIC package.
Applications
- Precision Conversion Applications: Ideal for applications such as analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and precision amplifiers.
- Optical Networks: Used in optical network equipment where stable and accurate voltage references are crucial.
- Medical Equipment: Suitable for medical devices that require high precision and low noise voltage references.
- Industrial Automation: Can be used in various industrial automation systems requiring stable voltage references.
Q & A
- What is the output voltage of the ADR421ARMZ-REEL7?
The output voltage of the ADR421ARMZ-REEL7 is 2.500 V, with an initial accuracy of ±3 mV for the A grade and ±1 mV for the B grade.
- What is the temperature range for the ADR421ARMZ-REEL7?
The device is specified over an extended industrial temperature range of −40°C to +125°C.
- What technology does the ADR421ARMZ-REEL7 use?
The ADR421ARMZ-REEL7 uses Analog Devices' patented XFET (eXtra implanted junction FET) technology.
- Can the output voltage of the ADR421ARMZ-REEL7 be adjusted?
Yes, the output voltage can be adjusted over a ±0.5% range using the trim terminal without compromising other performance parameters.
- What are the typical applications of the ADR421ARMZ-REEL7?
The device is ideal for precision conversion applications, optical networks, medical equipment, and industrial automation systems.
- What is the supply voltage headroom for the ADR421ARMZ-REEL7?
The supply voltage headroom is 2 V.
- What is the line regulation of the ADR421ARMZ-REEL7?
The line regulation is 10 ppm/V to 35 ppm/V for VIN = 5 V to 18 V.
- What is the load regulation of the ADR421ARMZ-REEL7?
The load regulation is 70 ppm/mA for IL = 0 mA to 10 mA.
- What is the quiescent current of the ADR421ARMZ-REEL7?
The quiescent current is 390 µA to 600 µA under no load conditions.
- In what packages is the ADR421ARMZ-REEL7 available?
The device is available in 8-lead MSOP and 8-lead SOIC packages.
