Overview
The ADR423BRZ is an ultraprecision, low noise voltage reference IC produced by Analog Devices Inc. This component is part of the ADR42x series, which utilizes second-generation eXtra implanted junction FET (XFET) technology to provide high accuracy, low noise, and exceptional long-term stability. The ADR423BRZ is specifically designed to deliver a stable 3.00 V output voltage, making it suitable for a wide range of precision analog applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (VOUT) | A Grade | 2.996 | 3.000 | 3.004 | V |
| Output Voltage (VOUT) | B Grade | 2.9985 | 3.000 | 3.0015 | V |
| Initial Accuracy (VOUTERR) | A Grade | -4 | - | 4 | mV |
| Initial Accuracy (VOUTERR) | B Grade | -1.5 | - | 1.5 | mV |
| Temperature Coefficient (TCVOUT) | A Grade | 2 | - | 10 | ppm/°C |
| Temperature Coefficient (TCVOUT) | B Grade | 1 | - | 3 | ppm/°C |
| Supply Voltage Headroom (VIN - VOUT) | - | - | 2 | V | |
| Line Regulation (∆VOUT/∆VIN) | VIN = 5 V to 18 V, -40°C < TA < +125°C | 10 | - | 35 | ppm/V |
| Load Regulation (∆VOUT/∆IL) | IL = 0 mA to 10 mA, -40°C < TA < +125°C | 70 | - | - | ppm/mA |
| Quiescent Current (IIN) | No load, -40°C < TA < +125°C | 390 | 500 | 600 | µA |
| Voltage Noise (eN p-p) | 0.1 Hz to 10 Hz | - | - | 1.75 | µV p-p |
| Voltage Noise Density (eN) | 1 kHz | - | - | 80 | nV/√Hz |
| Turn-on Settling Time (tR) | - | - | 10 | µs | |
| Long-term Stability (∆VOUT) | 1000 hours | - | - | 50 | ppm |
| Output Voltage Hysteresis (VOUT_HYS) | - | - | 40 | ppm | |
| Ripple Rejection Ratio (RRR) | fIN = 1 kHz | -75 | - | - | dB |
| Short Circuit to GND (ISC) | - | - | 27 | mA | |
| Package | - | - | - | 8-Lead SOIC_N | |
| Operating Temperature | - | -40°C | - | +125°C | °C |
Key Features
- High Accuracy: Ensured by the second-generation XFET technology, providing initial accuracy as low as ±0.04% for the B Grade.
- Low Noise: Offers low output noise, with a voltage noise density of 80 nV/√Hz at 1 kHz.
- Low Temperature Coefficient: As low as 1 ppm/°C for the B Grade, ensuring stable output voltage over a wide temperature range.
- Fast Response Time: Features a turn-on settling time of 10 µs.
- Robust in Harsh Conditions: Operates reliably in harsh environments with a wide operating temperature range of -40°C to +125°C.
- Precise Voltage Control: Provides a stable and accurate voltage output, making it suitable for precision applications).
- Low Distortion: Achieves low distortion, which is crucial for high-precision analog circuits).
Applications
- Data Acquisition Systems: Ideal for applications requiring precise voltage references, such as data converters and instrumentation).
- Precision Power Supplies: Used in power supplies where stable and accurate voltage outputs are necessary).
- Industrial Control Systems: Suitable for industrial control systems that demand high accuracy and stability).
- Battery-Operated Devices: Applicable in battery-operated devices where low power consumption and high accuracy are required).
- Portable Medical Gear: Used in portable medical equipment where precision and reliability are critical).
Q & A
- Q: What is the output voltage of the ADR423BRZ?
A: The ADR423BRZ provides a stable output voltage of 3.00 V with an initial accuracy of ±0.04% for the B Grade).
- Q: What is the temperature coefficient of the ADR423BRZ?
A: The temperature coefficient is as low as 1 ppm/°C for the B Grade, ensuring stable output voltage over a wide temperature range).
- Q: What is the operating temperature range of the ADR423BRZ?
A: The ADR423BRZ operates over a temperature range of -40°C to +125°C).
- Q: What is the package type of the ADR423BRZ?
A: The ADR423BRZ is available in an 8-Lead SOIC_N package).
- Q: What are the key features of the ADR423BRZ?
A: Key features include high accuracy, low noise, low temperature coefficient, fast response time, and robust operation in harsh conditions).
- Q: What applications is the ADR423BRZ suitable for?
A: It is suitable for data acquisition systems, precision power supplies, industrial control systems, battery-operated devices, and portable medical gear).
- Q: How does the ADR423BRZ ensure long-term stability?
A: The ADR423BRZ ensures long-term stability with a drift of 50 ppm over 1000 hours).
- Q: What is the quiescent current of the ADR423BRZ?
A: The quiescent current is typically 500 µA with no load, and up to 600 µA over the operating temperature range).
- Q: What is the ripple rejection ratio of the ADR423BRZ?
A: The ripple rejection ratio is -75 dB at 1 kHz).
- Q: What is the warranty period for the ADR423BRZ from authorized distributors?
A: The warranty period can vary, but typically, it is 1 year from authorized distributors like Ovaga).
