Overview
The ADR1581ARTZ-REEL7, produced by Analog Devices Inc., is a low-cost, 2-terminal (shunt) precision band gap voltage reference. It provides an accurate 1.25 V output for input currents ranging from 60 µA to 10 mA. This component is designed to offer superior accuracy and stability, making it suitable for a wide range of applications, particularly in battery-powered systems and high current applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage | 1.240 | 1.250 | 1.260 | V |
| Temperature Drift | - | - | 100 ppm/°C (Grade A), 50 ppm/°C (Grade B) | - |
| Minimum Operating Current | 60 | - | - | µA |
| Reverse Voltage Change with Reverse Current | - | - | 2.5 mV (60 µA < IIN < 10 mA) | - |
| Dynamic Output Impedance | - | - | 0.4 Ω (IIN = 1 mA ± 100 µA, f = 120 Hz) | - |
| Output Noise RMS | - | - | 20 µV rms (10 Hz to 10 kHz) | - |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package | - | - | 3-Lead SOT-23-3 | - |
Key Features
- Precision 1.25 V output voltage with high accuracy and low temperature drift.
- Wide operating current range: 60 µA to 10 mA.
- Low minimum operating current, making it ideal for battery-powered systems.
- Stable with any value of capacitive load.
- Available in two grades (A and B) with different temperature drift specifications.
- Compact 3-Lead SOT-23-3 and SC70 packages.
- RoHS compliant.
Applications
The ADR1581 is well-suited for various applications, including:
- Battery-powered 3V or 5V systems due to its low minimum operating current.
- High current applications where its wide operating current range is beneficial.
- Measurement of wide dynamic range, low frequency signals, such as those in chemical, physical, or biological processes, particularly when used with ADCs like the AD7714-3 and AD7715-3.
Q & A
- What is the output voltage of the ADR1581?
The ADR1581 provides an accurate 1.25 V output. - What is the operating current range of the ADR1581?
The operating current range is from 60 µA to 10 mA. - What is the temperature drift of the ADR1581?
The temperature drift is ±100 ppm/°C for Grade A and ±50 ppm/°C for Grade B. - What is the minimum operating current of the ADR1581?
The minimum operating current is 60 µA. - Is the ADR1581 stable with capacitive loads?
Yes, the ADR1581 is stable with any value of capacitive load. - What packages are available for the ADR1581?
The ADR1581 is available in 3-Lead SOT-23-3 and SC70 packages. - Is the ADR1581 RoHS compliant?
Yes, the ADR1581 is RoHS compliant. - What are some typical applications of the ADR1581?
Typical applications include battery-powered systems, high current applications, and measurement of low frequency signals in various processes. - Can the ADR1581 be used with other Analog Devices components?
Yes, it is well-suited for use with ADCs like the AD7714-3 and AD7715-3. - What is the operating temperature range of the ADR1581?
The operating temperature range is from -40°C to +85°C.
