Overview
The ADR423BRZ-REEL7 is a part of the ADR42x series of ultraprecision voltage references produced by Analog Devices Inc. This component is known for its low noise, high accuracy, and excellent long-term stability. It features the patented XFET (eXtra implanted junction FET) technology, which minimizes nonlinearity of the voltage change with temperature and offers superior accuracy and thermal hysteresis compared to band gap references. The ADR423BRZ-REEL7 is available in an 8-lead SOIC package and is specified over the extended industrial temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Output Voltage | VOUT | A Grade | 2.996 | 3.000 | 3.004 | V |
| B Grade | 2.9985 | 3.000 | 3.0015 | V | ||
| Initial Accuracy | VOUTERR | A Grade | −4 | 4 | mV | |
| B Grade | −1.5 | 1.5 | mV | |||
| Temperature Coefficient | TCVOUT | −40°C < TA < +125°C | 2 | 10 | ppm/°C (A Grade) | |
| −40°C < TA < +125°C | 1 | 3 | ppm/°C (B Grade) | |||
| Supply Voltage Headroom | VIN − VOUT | 2 | V | |||
| Line Regulation | ΔVOUT/ΔVIN | VIN = 5 V to 18 V, −40°C < TA < +125°C | 10 | 35 | ppm/V | |
| Load Regulation | ΔVOUT/ΔIL | IL = 0 mA to 10 mA, −40°C < TA < +125°C | 70 | ppm/mA | ||
| Quiescent Current | IIN | No load, −40°C < TA < +125°C | 500 | 600 | µA | |
| Voltage Noise (0.1 Hz to 10 Hz) | eN p-p | 2.0 | µV p-p | |||
| Voltage Noise Density at 1 kHz | eN | 80 | nV/√Hz | |||
| Turn-On Settling Time | tR | 10 | µs | |||
| Long-Term Stability (1000 hours) | ΔVOUT | 50 | ppm | |||
| Ripple Rejection Ratio at 1 kHz | RRR | −75 | dB | |||
| Short Circuit to GND | ISC | 27 | mA |
Key Features
- Low Noise: The ADR423BRZ-REEL7 features low voltage noise, with 2.0 μV p-p in the 0.1 Hz to 10 Hz range and 80 nV/√Hz at 1 kHz, making it suitable for high-precision applications.
- High Accuracy: It offers high initial accuracy, with ±4 mV for the A grade and ±1.5 mV for the B grade, and a low temperature coefficient of 2 ppm/°C to 10 ppm/°C for the A grade and 1 ppm/°C to 3 ppm/°C for the B grade.
- XFET Technology: Utilizes patented XFET technology, which provides superior accuracy and thermal hysteresis compared to band gap references.
- Adjustable Output Voltage: The trim terminal allows for adjusting the output voltage over a ±0.5% range without compromising other performance parameters.
- Low Power and Supply Headroom: Operates at lower power and lower supply headroom than buried Zener references.
- Extended Temperature Range: Specified over the extended industrial temperature range of −40°C to +125°C.
Applications
The ADR423BRZ-REEL7 is ideal for precision conversion applications, including:
- Optical Networks: High accuracy and low noise make it suitable for optical communication systems.
- Medical Equipment: Used in medical devices that require precise voltage references.
- High-Precision Instrumentation: Suitable for various high-precision measurement and control systems.
Q & A
- What is the output voltage of the ADR423BRZ-REEL7?
The output voltage of the ADR423BRZ-REEL7 is 3.00 V, with an initial accuracy of ±4 mV for the A grade and ±1.5 mV for the B grade. - What is the temperature range for the ADR423BRZ-REEL7?
The ADR423BRZ-REEL7 is specified over the extended industrial temperature range of −40°C to +125°C. - What is the noise performance of the ADR423BRZ-REEL7?
The ADR423BRZ-REEL7 has a low voltage noise of 2.0 μV p-p in the 0.1 Hz to 10 Hz range and 80 nV/√Hz at 1 kHz. - What technology does the ADR423BRZ-REEL7 use?
The ADR423BRZ-REEL7 uses patented XFET (eXtra implanted junction FET) technology. - Can the output voltage of the ADR423BRZ-REEL7 be adjusted?
Yes, the output voltage can be adjusted over a ±0.5% range using the trim terminal. - What are the typical applications of the ADR423BRZ-REEL7?
The ADR423BRZ-REEL7 is used in optical networks, medical equipment, and other high-precision instrumentation. - What is the quiescent current of the ADR423BRZ-REEL7?
The quiescent current is typically 500 µA with no load, and up to 600 µA over the operating temperature range. - What is the ripple rejection ratio of the ADR423BRZ-REEL7 at 1 kHz?
The ripple rejection ratio at 1 kHz is −75 dB. - What is the short circuit current to GND for the ADR423BRZ-REEL7?
The short circuit current to GND is 27 mA. - What package types are available for the ADR423BRZ-REEL7?
The ADR423BRZ-REEL7 is available in an 8-lead SOIC package.
