Overview
The ADR443ARZ is a precision voltage reference from Analog Devices Inc., part of the ADR440/ADR441/ADR443/ADR444/ADR445 family. This device features ultralow noise, high accuracy, and low temperature drift performance, making it ideal for precision signal conversion applications. The ADR443ARZ utilizes Analog Devices' patented temperature drift curvature correction and XFET (eXtra implanted junction FET) technology to minimize voltage change vs. temperature nonlinearity.
The device is capable of sourcing up to 10 mA of output current and sinking up to −5 mA, and it includes a trim terminal to adjust the output voltage over a 0.5% range without compromising performance. It is available in 8-lead MSOP and narrow SOIC packages and is specified over the extended industrial temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Output Voltage | VOUT | A Grade | 2.996 | 3.000 | 3.004 | V |
| B Grade | 2.9988 | 3.000 | 3.0012 | V | ||
| Initial Accuracy | VOERR | A Grade | ±4 mV | 0.13 % | ||
| B Grade | ±1.2 mV | 0.04 % | ||||
| Temperature Drift | TCVOUT | A Grade | 2 | 10 ppm/°C | ||
| B Grade | 1 | 3 ppm/°C | ||||
| Line Regulation | ΔVOUT/ΔVIN | 10 | 20 ppm/V | |||
| Load Regulation | ΔVOUT/ΔILOAD | ILOAD = 0 mA to 10 mA, VIN = 5 V | −50 | 50 ppm/mA | ||
| Input Voltage Range | VIN | 3.5 V | 20 V | |||
| Output Current | IOUT | 10 mA | ||||
| Package Type | 8-lead MSOP, 8-lead SOIC | |||||
| Operating Temperature Range | TA | −40°C | +125°C |
Key Features
- Ultralow Noise: The ADR443ARZ features ultralow noise performance, making it suitable for high-precision applications.
- High Accuracy: Offers high accuracy with initial accuracy as low as ±1.2 mV for the B grade and ±4 mV for the A grade.
- Low Temperature Drift: Utilizes patented temperature drift curvature correction and XFET technology to minimize temperature drift.
- Current Source and Sink Capability: Capable of sourcing up to 10 mA and sinking up to −5 mA of output current.
- Trim Terminal: Includes a trim terminal to adjust the output voltage over a 0.5% range without compromising performance.
- Low Supply Voltage Headroom: Operates with a low supply voltage headroom of 500 mV.
- Extended Industrial Temperature Range: Specified over the temperature range of −40°C to +125°C.
Applications
- Precision Signal Conversion: Ideal for high-end data acquisition systems, optical networks, and medical applications.
- High-End Data Acquisition Systems: Suitable for applications requiring high precision and low noise.
- Optical Networks: Used in optical communication systems where stable and accurate voltage references are crucial.
- Medical Applications: Applicable in medical devices that require precise voltage references for accurate measurements.
Q & A
- What is the output voltage of the ADR443ARZ?
The output voltage of the ADR443ARZ is 3.0 V, with an initial accuracy of ±4 mV for the A grade and ±1.2 mV for the B grade.
- What is the temperature drift of the ADR443ARZ?
The temperature drift of the ADR443ARZ is 2 to 10 ppm/°C for the A grade and 1 to 3 ppm/°C for the B grade over the temperature range of −40°C to +125°C.
- What is the maximum output current of the ADR443ARZ?
The ADR443ARZ can source up to 10 mA of output current and sink up to −5 mA.
- What packages are available for the ADR443ARZ?
The ADR443ARZ is available in 8-lead MSOP and narrow SOIC packages.
- What is the operating temperature range of the ADR443ARZ?
The operating temperature range of the ADR443ARZ is −40°C to +125°C.
- Does the ADR443ARZ have a trim terminal?
Yes, the ADR443ARZ includes a trim terminal to adjust the output voltage over a 0.5% range without compromising performance.
- What are the typical applications of the ADR443ARZ?
The ADR443ARZ is typically used in high-end data acquisition systems, optical networks, and medical applications.
- What is the input voltage range of the ADR443ARZ?
The input voltage range of the ADR443ARZ is from 3.5 V to 20 V.
- How does the ADR443ARZ minimize temperature drift?
The ADR443ARZ uses Analog Devices' patented temperature drift curvature correction and XFET technology to minimize temperature drift.
- What is the line regulation of the ADR443ARZ?
The line regulation of the ADR443ARZ is 10 to 20 ppm/V.
