Overview
The ADR440BRZ, produced by Analog Devices Inc., is a member of the ADR440/ADR441/ADR443/ADR444/ADR445 series of XFET voltage references. These devices are renowned for their ultralow noise, high accuracy, and low temperature drift performance. Utilizing Analog Devices' patented temperature drift curvature correction and XFET (eXtra implanted junction FET) technology, the ADR440BRZ minimizes voltage change vs. temperature nonlinearity, making it ideal for precision signal conversion applications.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Output Voltage | 2.048 V | VIN = 3 V to 18 V, TA = 25°C |
| Initial Accuracy | ±1 mV / 0.05% max | VIN = 3 V to 18 V, TA = 25°C |
| Temperature Coefficient | 3 ppm/°C max | −40°C < TA < +125°C |
| Supply Voltage Operating Range | 3 V to 18 V | |
| Supply Voltage Headroom | 500 mV | |
| Output Current Source/Sink | +10 mA / −5 mA | |
| Ripple Rejection Ratio | −80 dB at fIN = 1 kHz | VIN = 3 V to 18 V, TA = 25°C |
| Voltage Noise | 1 µV p-p at 0.1 Hz to 10 Hz | VIN = 3 V to 18 V, TA = 25°C |
| Turn On Settling Time | 10 µs | VIN = 3 V to 18 V, TA = 25°C |
| Line Regulation | +20 ppm/V max | −40°C < TA < +125°C |
| Load Regulation | ±50 ppm/mA | ILOAD = 0 mA to −5 mA, VIN = 3.5 V, −40°C < TA < +125°C |
| Package | 8-lead SOIC-N | |
| Operating Temperature Range | −40°C to +125°C |
Key Features
- Ultralow Noise: The ADR440BRZ features ultralow noise performance, with 1 µV p-p at 0.1 Hz to 10 Hz, making it suitable for high-precision applications.
- High Accuracy: It offers high accuracy with an initial accuracy of ±1 mV / 0.05% max.
- Low Temperature Drift: The device has a low temperature coefficient of 3 ppm/°C max over the extended industrial temperature range of −40°C to +125°C.
- Current Sink and Source Capability: The ADR440BRZ can source up to 10 mA and sink up to −5 mA of output current.
- Trim Terminal: It includes a trim terminal to adjust the output voltage over a 0.5% range without compromising performance.
- Low Supply Voltage Headroom: The device operates with a low supply voltage headroom of 500 mV.
- Ripple Rejection Ratio: It has a high ripple rejection ratio of −80 dB at fIN = 1 kHz.
Applications
- Precision Data Acquisition Systems: Ideal for high-end data acquisition systems requiring precise voltage references.
- High Resolution Data Converters: Suitable for applications needing high accuracy and low noise.
- Battery-Powered Instrumentation: Used in battery-powered devices where low power consumption and high accuracy are crucial.
- Portable Medical Instruments: Applied in medical devices that require precise and stable voltage references.
- Industrial Process Control Systems: Utilized in industrial control systems for precise measurement and control.
- Optical Control Circuits: Employed in optical networks and control circuits where high accuracy and low noise are essential.
Q & A
- What is the output voltage of the ADR440BRZ?
The output voltage of the ADR440BRZ is 2.048 V.
- What is the initial accuracy of the ADR440BRZ?
The initial accuracy is ±1 mV / 0.05% max.
- What is the temperature coefficient of the ADR440BRZ?
The temperature coefficient is 3 ppm/°C max over the range of −40°C to +125°C.
- What is the supply voltage operating range of the ADR440BRZ?
The supply voltage operating range is from 3 V to 18 V.
- Can the ADR440BRZ source and sink current?
Yes, it can source up to 10 mA and sink up to −5 mA of output current.
- What is the ripple rejection ratio of the ADR440BRZ?
The ripple rejection ratio is −80 dB at fIN = 1 kHz.
- What is the voltage noise of the ADR440BRZ?
The voltage noise is 1 µV p-p at 0.1 Hz to 10 Hz.
- What is the turn-on settling time of the ADR440BRZ?
The turn-on settling time is 10 µs.
- In what package is the ADR440BRZ available?
The ADR440BRZ is available in an 8-lead SOIC-N package.
- What is the operating temperature range of the ADR440BRZ?
The operating temperature range is from −40°C to +125°C.
