Overview
The ADR4540BRZ, produced by Analog Devices Inc., is a high-precision, low-power, 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 ADR4540BRZ 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 temperature range.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Output Voltage | VOUT | VIN = 5.1 V to 15 V, IL = 0 mA, TA = 25°C | 4.096 | V | ||
| Initial Output Voltage Error | VOUT_ERR | B, C, D Grade | ±0.02% | % | ||
| Temperature Coefficient | TCVOUT | 0°C ≤ TA ≤ +70°C (box method) | 0.8 ppm/°C | ppm/°C | ||
| Operating Current | Icc | 950 μA | μA | |||
| Low Dropout Voltage | VDO | 300 mV | mV | |||
| Operating Temperature Range | TA | -40°C | +125°C | °C | ||
| Storage Temperature Range | TA | -65°C | +150°C | °C | ||
| Electrostatic Discharge (ESD) Human Body Model (HBM) | 6 kV | kV |
Key Features
- High precision with ±0.02% B, C, and D grade maximum initial error.
- Excellent temperature stability and low output noise.
- Innovative core topology for high accuracy and industry-leading temperature stability and noise performance.
- Low, thermally induced output voltage hysteresis and low long-term output voltage drift.
- Maximum operating current of 950 μA and a maximum low dropout voltage of 300 mV.
- Available in 8-lead SOIC and LCC packages.
- Qualified for automotive applications (ADR4525W model).
Applications
The ADR4540BRZ is suitable for a variety of applications that require high precision and reliability, including:
- Portable equipment due to its low power consumption and low dropout voltage.
- Automotive systems, with the ADR4525W model specifically qualified for such applications.
- Industrial and commercial systems requiring stable voltage references over a wide temperature range.
- Precision measurement and instrumentation.
- High-reliability systems where minimal long-term drift is critical.
Q & A
- What is the output voltage of the ADR4540BRZ?
The output voltage of the ADR4540BRZ is 4.096 V.
- What is the maximum initial error of the ADR4540BRZ?
The maximum initial error for B, C, and D grades is ±0.02%.
- What is the operating temperature range of the ADR4540BRZ?
The operating temperature range is from -40°C to +125°C.
- What is the maximum operating current of the ADR4540BRZ?
The maximum operating current is 950 μA.
- What are the available packages for the ADR4540BRZ?
The device is available in 8-lead SOIC and LCC packages.
- Is the ADR4540BRZ suitable for automotive applications?
While the ADR4540BRZ itself is not specifically qualified for automotive applications, the ADR4525W model in the same family is qualified for such use.
- What is the electrostatic discharge (ESD) rating of the ADR4540BRZ?
The ESD rating is 6 kV according to the Human Body Model (HBM).
- What are the key features that make the ADR4540BRZ suitable for high-reliability systems?
The device features low, thermally induced output voltage hysteresis and low long-term output voltage drift, making it suitable for high-reliability systems.
- Can the ADR4540BRZ be used in portable equipment?
- What is the storage temperature range for the ADR4540BRZ?
The storage temperature range is from -65°C to +150°C.
