Overview
The ADR441BRZ is a high-precision voltage reference IC from Analog Devices Inc., part of the ADR440/ADR441/ADR443/ADR444/ADR445 family. This device is renowned for its ultralow noise, high accuracy, and low temperature drift, making it ideal for precision signal conversion applications. The ADR441BRZ is available in an 8-lead NSOIC package and is specified over the extended industrial temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 2.500 | V |
| Initial Accuracy | ±1 (B grade), ±3 (A grade) | mV |
| Temperature Coefficient | 3 (B grade), 10 (A grade) | ppm/°C |
| Voltage Noise (0.1 Hz to 10 Hz) | 1.2 µV p-p | µV p-p |
| Voltage Noise Density at 1 kHz | 45 nV/√Hz | nV/√Hz |
| Turn-on Settling Time | 10 µs | µs |
| Long-term Stability (1000 hours) | 50 ppm | ppm |
| Output Voltage Hysteresis | 70 ppm | ppm |
| Ripple Rejection Ratio at 1 kHz | −80 dB | dB |
| Short Circuit to GND | 27 mA | mA |
| Supply Voltage Operating Range | 3 to 18 | V |
| Supply Voltage Headroom | 500 mV | mV |
| Output Current Capability | Up to 10 mA source, up to −5 mA sink | mA |
| Package Type | 8-lead NSOIC | |
| Operating Temperature Range | −40°C to +125°C | °C |
Key Features
- Ultralow Noise: The ADR441BRZ features ultralow noise, with a voltage noise of 1.2 µV p-p in the 0.1 Hz to 10 Hz frequency range and a voltage noise density of 45 nV/√Hz at 1 kHz.
- High Accuracy: The device offers high initial accuracy, with options for ±1 mV (B grade) and ±3 mV (A grade).
- Low Temperature Drift: It has a low temperature coefficient of 3 ppm/°C (B grade) and 10 ppm/°C (A grade).
- Adjustable Output Voltage: The output voltage can be adjusted over a 0.5% range using the trim terminal without compromising performance.
- High Output Current Capability: The ADR441BRZ can source up to 10 mA and sink up to −5 mA of output current.
- Wide Supply Voltage Range: It operates over a supply voltage range of 3 V to 18 V with a minimum supply voltage headroom of 500 mV.
Applications
- Precision Signal Conversion: Ideal for high-end data acquisition systems where precise voltage references are crucial.
- Optical Networks: Used in optical communication systems that require stable and accurate voltage references.
- Medical Applications: Suitable for medical devices that demand high precision and low noise voltage references.
Q & A
- What is the output voltage of the ADR441BRZ?
The output voltage of the ADR441BRZ is 2.500 V.
- What are the initial accuracy options for the ADR441BRZ?
The initial accuracy options are ±1 mV (B grade) and ±3 mV (A grade).
- What is the temperature coefficient of the ADR441BRZ?
The temperature coefficient is 3 ppm/°C (B grade) and 10 ppm/°C (A grade).
- What is the voltage noise of the ADR441BRZ in the 0.1 Hz to 10 Hz frequency range?
The voltage noise is 1.2 µV p-p in the 0.1 Hz to 10 Hz frequency range.
- Can the output voltage of the ADR441BRZ be adjusted?
Yes, the output voltage can be adjusted over a 0.5% range using the trim terminal.
- What is the maximum output current capability of the ADR441BRZ?
The ADR441BRZ can source up to 10 mA and sink up to −5 mA of output current.
- What is the operating temperature range of the ADR441BRZ?
The operating temperature range is −40°C to +125°C.
- What is the supply voltage range for the ADR441BRZ?
The supply voltage range is 3 V to 18 V with a minimum supply voltage headroom of 500 mV.
- What are some typical applications of the ADR441BRZ?
Typical applications include precision signal conversion in high-end data acquisition systems, optical networks, and medical devices.
- What package type is the ADR441BRZ available in?
The ADR441BRZ is available in an 8-lead NSOIC package.
