Overview
The ADR434BRZ-REEL7 is a part of the ADR430/ADR431/ADR433/ADR434/ADR435 series, a family of XFET® voltage references produced by Analog Devices Inc. These voltage references are known for their low noise, high accuracy, and low temperature drift performance. Utilizing Analog Devices' temperature drift curvature correction and extra implanted junction FET (XFET) technology, these references minimize voltage change vs. temperature nonlinearity. The ADR434BRZ-REEL7 operates at lower current and supply voltage headroom compared to traditional buried Zener references, making it an ideal solution for various precision voltage reference applications.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (A Grade) | VOUT | 4.091 | 4.096 | 4.101 | V |
| Output Voltage (B Grade) | VOUT | 4.0945 | 4.096 | 4.0975 | V |
| Initial Accuracy (A Grade) | VOERR | ±6 mV | ±0.12 % | ||
| Initial Accuracy (B Grade) | VOERR | ±2 mV | ±0.04 % | ||
| Temperature Coefficient (A Grade) | TCVOUT | 10 ppm/°C | |||
| Temperature Coefficient (B Grade) | TCVOUT | 3 ppm/°C | |||
| Supply Voltage Operating Range | VIN | 5.0 | 18 | V | |
| Supply Voltage Headroom | VIN - VOUT | 2 | V | ||
| Output Current Source Capability | 30 mA | ||||
| Output Current Sink Capability | -20 mA | ||||
| Operating Temperature Range | TA | -40°C | +125°C |
Key Features
- Low noise: 3.5 µV p-p at 2.500 V output (0.1 Hz to 10.0 Hz)
- No external capacitor required
- Low temperature coefficient: A grade 10 ppm/°C, B grade 3 ppm/°C
- Current sink and source capability: up to 30 mA source, up to -20 mA sink
- Trim terminal for adjusting output voltage over a ±0.5% range
- Available in 8-lead MSOP and 8-lead narrow SOIC packages
- Operates at lower current (800 µA) and lower supply voltage headroom (2 V) compared to buried Zener references
Applications
The ADR434BRZ-REEL7 is suitable for a variety of precision voltage reference applications, including but not limited to:
- Precision voltage regulation in analog circuits
- High-accuracy measurement systems
- Low-noise signal processing
- Industrial control systems requiring stable voltage references
- Aerospace and defense applications where high reliability and accuracy are critical
Q & A
- What is the output voltage of the ADR434BRZ-REEL7? The output voltage for the A Grade is 4.091 V to 4.101 V, and for the B Grade, it is 4.0945 V to 4.0975 V.
- What is the temperature coefficient of the ADR434BRZ-REEL7? The temperature coefficient for the A Grade is 10 ppm/°C, and for the B Grade, it is 3 ppm/°C.
- Does the ADR434BRZ-REEL7 require an external capacitor? No, it does not require an external capacitor.
- What is the supply voltage operating range of the ADR434BRZ-REEL7? The supply voltage operating range is from 5.0 V to 18 V.
- What are the current source and sink capabilities of the ADR434BRZ-REEL7? It can source up to 30 mA and sink up to -20 mA.
- In what packages is the ADR434BRZ-REEL7 available? It is available in 8-lead MSOP and 8-lead narrow SOIC packages.
- What is the operating temperature range of the ADR434BRZ-REEL7? The operating temperature range is from -40°C to +125°C.
- How does the ADR434BRZ-REEL7 compare to buried Zener references? It operates at lower current (800 µA) and lower supply voltage headroom (2 V) compared to buried Zener references.
- Can the output voltage of the ADR434BRZ-REEL7 be adjusted? Yes, it has a trim terminal to adjust the output voltage over a ±0.5% range.
- What are some typical applications of the ADR434BRZ-REEL7? It is used in precision voltage regulation, high-accuracy measurement systems, low-noise signal processing, and industrial control systems.
