Overview
The ADR434BRZ is a high-performance voltage reference IC from Analog Devices Inc., part of the ADR430/ADR431/ADR433/ADR434/ADR435 series. This family of XFET® voltage references is known for its low noise, high accuracy, and minimal temperature drift. The ADR434BRZ operates with a fixed output voltage of 4.096V and is designed to provide stable voltage references in various applications, including those requiring high precision and reliability.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Output Voltage | VOUT | A Grade: VIN = 6.1 V to 18 V, IL = 0 mA, TA = 25°C | 4.091 | 4.096 | 4.101 | V |
| B Grade: VIN = 6.1 V to 18 V, IL = 0 mA, TA = 25°C | 4.0945 | 4.096 | 4.0975 | V | ||
| Initial Accuracy | VOERR | A Grade | ±3 mV | ±0.12 % | ||
| B Grade | ±1 mV | ±0.04 % | ||||
| Temperature Coefficient | TCVOUT | A Grade: −40°C < TA < +125°C | 2 | 10 ppm/°C | ||
| B Grade: −40°C < TA < +125°C | 1 | 3 ppm/°C | ||||
| Line Regulation | ∆VOUT/∆VIN | VIN = 4.5 V to 18 V, −40°C < TA < +125°C | 5 | 20 ppm/V | ||
| Load Regulation | ∆VOUT/∆IL | |||||
| Supply Voltage Operating Range | VIN | 5.0 | 18 V | |||
| Supply Voltage Headroom | VIN − VOUT | 2 V | ||||
| Trim Range | −5 % | +5 % |
Key Features
- Low Noise: The ADR434BRZ features low noise performance, making it suitable for high-precision applications.
- High Accuracy: It offers high accuracy with initial accuracy as low as ±0.04% for B Grade.
- Low Temperature Drift: The device minimizes temperature drift using Analog Devices’ temperature drift curvature correction and XFET technology.
- Current Sink and Source Capability: The IC can source up to 30 mA and sink up to −20 mA of output current.
- Trim Terminal: A trim terminal is available to adjust the output voltage over a ±0.5% range without compromising performance.
- Low Supply Voltage Headroom: Operates with a lower supply voltage headroom of 2 V compared to buried Zener references.
- Extended Industrial Temperature Range: Specified over the temperature range of −40°C to +125°C.
Applications
The ADR434BRZ is suitable for a variety of applications requiring high precision and stability, including:
- High-precision measurement and instrumentation systems.
- Medical devices and diagnostic equipment.
- Aerospace and defense systems, with the ADR434-EP supporting AQEC standards.
- Industrial control systems and automation.
- Telecommunication equipment and data acquisition systems.
Q & A
- What is the output voltage of the ADR434BRZ?
The output voltage of the ADR434BRZ is 4.096V. - What is the initial accuracy of the ADR434BRZ?
The initial accuracy is ±0.04% for B Grade and ±0.12% for A Grade. - What is the temperature coefficient of the ADR434BRZ?
The temperature coefficient is 1 ppm/°C for B Grade and 2 ppm/°C for A Grade over the range −40°C to +125°C. - Can the ADR434BRZ source and sink current?
- What is the supply voltage operating range for the ADR434BRZ?
The supply voltage operating range is from 5.0 V to 18 V.- Does the ADR434BRZ require external capacitors?
No, the ADR434BRZ does not require external capacitors.- What are the available package options for the ADR434BRZ?
The ADR434BRZ is available in 8-lead MSOP and 8-lead narrow SOIC packages.- Is the ADR434BRZ suitable for aerospace and defense applications?
- What is the trim range for the ADR434BRZ?
The trim range is ±5%.- What is the operating temperature range for the ADR434BRZ?
The operating temperature range is from −40°C to +125°C. - What is the supply voltage operating range for the ADR434BRZ?
