Overview
The ADR4520BRZ, produced by Analog Devices Inc., is a high precision, low power, and low noise voltage reference. This device is part of the ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 family, known for its excellent temperature stability and low output noise. The ADR4520BRZ features an innovative core topology that achieves high accuracy and industry-leading temperature stability and noise performance. It is particularly suited for applications requiring high precision and reliability over a wide range of temperatures.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage | VOUT | 2.048 | V | ||
| Initial Output Voltage Error | VOUT_ERR | ±0.02% | % | ||
| Input Voltage Range | VIN | 3 | 15 | V | |
| Operating Temperature Range | TA | −40 | +125 | °C | |
| Quiescent Current | IQ | 700 | 950 | μA | |
| Low Dropout Voltage | VDO | 100 | 300 | mV | |
| Output Current Capacity | IL | −10 | +10 | mA | |
| Temperature Coefficient (TCVOUT) | 2 | ppm/°C | |||
| Output Noise (0.1 Hz to 10 Hz) | 1 | μV p-p | |||
| Package Type | 8-Lead SOIC |
Key Features
- High precision with ±0.02% maximum initial error for B, C, and D grades.
- Excellent temperature stability with a temperature coefficient of 2 ppm/°C for B grade and 1 ppm/°C for C grade.
- Low output noise of 1 μV p-p (typical) in the 0.1 Hz to 10 Hz frequency range.
- Low quiescent current of 950 μA (maximum) and low dropout voltage of 300 mV at 2 mA.
- Low long-term output voltage drift, improving system accuracy over time and temperature variations.
- AEC-Q100 qualified for automotive applications (specific models like ADR4525W).
- Available in 8-lead SOIC and LCC packages.
Applications
- Precision data acquisition systems.
- High resolution data converters.
- High precision measurement devices.
- Industrial instrumentation.
- Medical devices.
- Automotive battery monitoring.
Q & A
- What is the typical output voltage of the ADR4520BRZ?
The typical output voltage of the ADR4520BRZ is 2.048 V.
- What is the maximum initial output voltage error for the B grade of the ADR4520BRZ?
The maximum initial output voltage error for the B grade is ±0.02%.
- What is the operating temperature range for the ADR4520BRZ?
The operating temperature range is −40°C to +125°C.
- What is the quiescent current of the ADR4520BRZ?
The quiescent current is a maximum of 950 μA.
- What is the low dropout voltage of the ADR4520BRZ at 2 mA?
The low dropout voltage at 2 mA is 300 mV.
- What is the output current capacity of the ADR4520BRZ?
The output current capacity is ±10 mA (sourcing and sinking).
- What is the temperature coefficient (TCVOUT) for the B grade of the ADR4520BRZ?
The temperature coefficient for the B grade is 2 ppm/°C.
- What is the typical output noise of the ADR4520BRZ in the 0.1 Hz to 10 Hz frequency range?
The typical output noise is 1 μV p-p.
- In what package types is the ADR4520BRZ available?
The ADR4520BRZ is available in an 8-lead SOIC package.
- Is the ADR4520BRZ qualified for automotive applications?
No, but the ADR4525W model, which is part of the same family, is AEC-Q100 qualified for automotive applications.
