Overview
The ADR4540ARZ-R7 is a high-precision, low-power, low-noise voltage reference IC 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 noise performance. The ADR4540ARZ-R7 provides a fixed output voltage of 4.096V with a maximum initial error of ±0.02% for B, C, and D grades, making it suitable for applications requiring high accuracy and reliability.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (VOUT) | - | 4.096 | - | V |
| Initial Output Voltage Error (VOUT_ERR) | - | ±0.02% (B grade), ±0.04% (A grade) | - | % |
| Temperature Coefficient (TCVOUT) | - | 2 ppm/°C (B grade), 4 ppm/°C (A grade) | - | ppm/°C |
| Line Regulation (ΔVOUT/ΔVIN) | 1 | - | 10 | ppm/V |
| Load Regulation (ΔVOUT/ΔIL) | 30 | - | 80 | ppm/mA |
| Quiescent Current (IQ) | 700 | - | 950 | μA |
| Dropout Voltage (VDO) | 100 | - | 300 | mV |
| Ripple Rejection Ratio (RRR) | - | - | 90 | dB |
| Output Current Capacity (IL) | -8 | - | 10 | mA |
| Output Voltage Noise (eNp-p) | - | - | 1.0 | μV p-p |
| Output Voltage Noise Density (eN) | - | - | 35.8 | nV/√Hz |
| Operating Temperature Range | -40 | - | 125 | °C |
| Package | - | - | 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 (B grade) and 4 ppm/°C (A grade).
- Low output noise with 1.0 μV p-p output voltage noise and 35.8 nV/√Hz output voltage noise density.
- Low quiescent current of 700 μA to 950 μA.
- Low dropout voltage of 100 mV to 300 mV.
- High ripple rejection ratio of 90 dB.
- Output current capacity of -8 mA to 10 mA.
- Available in 8-lead SOIC and LCC packages.
- Extended industrial temperature range of -40°C to +125°C.
Applications
The ADR4540ARZ-R7 is suitable for a variety of applications that require high precision and low noise voltage references. These include:
- Portable equipment due to its low power consumption and low dropout voltage.
- High-accuracy measurement systems.
- Automotive applications (specific models like ADR4525W).
- Industrial control systems.
- Medical devices requiring precise voltage references.
Q & A
- What is the output voltage of the ADR4540ARZ-R7?
The output voltage of the ADR4540ARZ-R7 is 4.096V.
- What is the maximum initial error of the ADR4540ARZ-R7?
The maximum initial error is ±0.02% for B, C, and D grades, and ±0.04% for A grade.
- What is the temperature coefficient of the ADR4540ARZ-R7?
The temperature coefficient is 2 ppm/°C for B grade and 4 ppm/°C for A grade.
- What is the quiescent current of the ADR4540ARZ-R7?
The quiescent current ranges from 700 μA to 950 μA.
- What is the dropout voltage of the ADR4540ARZ-R7?
The dropout voltage ranges from 100 mV to 300 mV.
- What is the ripple rejection ratio of the ADR4540ARZ-R7?
The ripple rejection ratio is 90 dB.
- What is the output current capacity of the ADR4540ARZ-R7?
The output current capacity is -8 mA to 10 mA.
- In what packages is the ADR4540ARZ-R7 available?
The ADR4540ARZ-R7 is available in 8-lead SOIC and LCC packages.
- What is the operating temperature range of the ADR4540ARZ-R7?
The operating temperature range is -40°C to +125°C.
- Is the ADR4540ARZ-R7 suitable for automotive applications?
While the ADR4540ARZ-R7 itself is not specifically qualified for automotive applications, other models in the series (like ADR4525W) are qualified for such use.
