Overview
The ADR4550BRZ-R7 is a high-precision, low-power, low-noise voltage reference produced by Analog Devices Inc. This device is part of the ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 family, known for its excellent temperature stability and low output noise. The ADR4550BRZ-R7 features an innovative core topology that achieves high accuracy and industry-leading temperature stability and noise performance.
It is designed to operate over an extended industrial temperature range of −40°C to +125°C and is available in an 8-lead SOIC package. This voltage reference is suitable for a wide range of applications, including portable equipment, due to its low maximum operating current and low dropout voltage.
Key Specifications
| Specification | Value |
|---|---|
| Output Voltage | Varies by model (e.g., ADR4550: 5.0V) |
| Maximum Initial Error | ±0.02% (A, B, C Grade) |
| Temperature Range | −40°C to +125°C |
| Package Type | 8-Lead SOIC |
| Maximum Operating Current | 950 μA |
| Low Dropout Voltage | 300 mV |
| Output Voltage Noise Density | 83.5 nV/√Hz at 1 kHz |
| Output Voltage Hysteresis | −13 ppm (full cycle, A, B, C Grade) |
| Long-Term Drift | 25 ppm (1000 hours, A, B, C Grade) |
Key Features
- High precision with ±0.02% maximum initial error for A, B, and C grades
- Excellent temperature stability and low output noise
- Low, thermally induced output voltage hysteresis and low long-term output voltage drift
- Low maximum operating current of 950 μA and low dropout voltage of 300 mV
- Available in an 8-lead SOIC package
- Extended industrial temperature range of −40°C to +125°C
Applications
- Portable equipment due to low power consumption and low dropout voltage
- Automotive applications (specific models like ADR4525W)
- Industrial and commercial systems requiring high precision voltage references
- Measurement and instrumentation systems
Q & A
- What is the maximum initial error of the ADR4550BRZ-R7?
The maximum initial error is ±0.02% for A, B, and C grades.
- What is the operating temperature range of the ADR4550BRZ-R7?
The operating temperature range is −40°C to +125°C.
- What is the package type of the ADR4550BRZ-R7?
The package type is an 8-lead SOIC.
- What is the maximum operating current of the ADR4550BRZ-R7?
The maximum operating current is 950 μA.
- What is the output voltage noise density of the ADR4550BRZ-R7?
The output voltage noise density is 83.5 nV/√Hz at 1 kHz.
- What is the long-term drift of the ADR4550BRZ-R7?
The long-term drift is 25 ppm over 1000 hours for A, B, and C grades.
- Is the ADR4550BRZ-R7 suitable for automotive applications?
While the ADR4550BRZ-R7 itself is not specifically qualified for automotive applications, other models in the series like the ADR4525W are.
- What are some common applications of the ADR4550BRZ-R7?
Common applications include portable equipment, industrial and commercial systems, and measurement and instrumentation systems.
- What is the low dropout voltage of the ADR4550BRZ-R7?
The low dropout voltage is 300 mV.
- How does the ADR4550BRZ-R7 achieve high accuracy and temperature stability?
The device uses an innovative core topology to achieve high accuracy and industry-leading temperature stability and noise performance.
