Overview
The ADR1581BRTZ-REEL7 is a 1.25 V micropower, precision shunt voltage reference produced by Analog Devices Inc. This device is designed to provide a stable and accurate voltage reference, making it suitable for high-accuracy data acquisition systems and other precision applications. The ADR1581 utilizes the band gap concept to achieve a low temperature coefficient, ensuring reliable performance over a wide temperature range.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Reverse Voltage Output | 1.2485 | 1.250 | 1.2515 | V |
| Reverse Voltage Temperature Drift (-40°C to +85°C) | 50 | ppm/°C | ||
| Minimum Operating Current (TMIN to TMAX) | 60 | μA | ||
| Reverse Voltage Change with Reverse Current (60 μA < IIN < 10 mA, TMIN to TMAX) | 2.5 | 6 | mV | |
| Dynamic Output Impedance (∆VR/ΔIR) at IIN = 1 mA ± 100 μA (f = 120 Hz) | 0.4 | 1 | Ω | |
| Output Noise RMS (10 Hz to 10 kHz) | 20 | μV rms | ||
| Package Type | 3-Lead SOT-23-3 | |||
| Temperature Range | -40°C | +85°C |
Key Features
- Precision Voltage Reference: The ADR1581BRTZ-REEL7 provides a precise 1.25 V voltage reference with low temperature drift, making it ideal for high-accuracy applications.
- Low Power Consumption: The device operates with a minimum current of 60 μA, making it suitable for battery-powered and low-power systems.
- Wide Temperature Range: The device is operational over a temperature range of -40°C to +85°C, ensuring reliability in various environmental conditions.
- Low Output Noise: The ADR1581 features low output noise, with an RMS noise voltage of 20 μV over the 10 Hz to 10 kHz frequency range.
- Compact Package: The 3-Lead SOT-23-3 package is compact and suitable for space-constrained designs.
Applications
The ADR1581BRTZ-REEL7 is well-suited for a variety of precision applications, including:
- Data Acquisition Systems: Ideal for high-accuracy data acquisition components and systems, especially those requiring stable voltage references.
- Analog-to-Digital Converters (ADCs): Compatible with ADCs such as the AD7714-3 and AD7715-3, which are used for measuring wide dynamic range, low-frequency signals.
- Industrial and Medical Devices: Suitable for applications in industrial and medical devices where precise voltage references are critical.
- Battery-Powered Devices: The low power consumption makes it a good choice for battery-powered devices and other low-power systems.
Q & A
- What is the output voltage of the ADR1581BRTZ-REEL7?
The output voltage of the ADR1581BRTZ-REEL7 is 1.25 V with a tolerance of ±0.12%. - What is the temperature range of the ADR1581BRTZ-REEL7?
The device operates over a temperature range of -40°C to +85°C. - What is the minimum operating current of the ADR1581BRTZ-REEL7?
The minimum operating current is 60 μA. - What is the dynamic output impedance of the ADR1581BRTZ-REEL7?
The dynamic output impedance is 0.4 to 1 Ω at IIN = 1 mA ± 100 μA (f = 120 Hz). - What is the output noise of the ADR1581BRTZ-REEL7?
The output noise is 20 μV rms over the 10 Hz to 10 kHz frequency range. - In what package is the ADR1581BRTZ-REEL7 available?
The device is available in a 3-Lead SOT-23-3 package. - Is the ADR1581BRTZ-REEL7 RoHS compliant?
Yes, the ADR1581BRTZ-REEL7 is RoHS compliant. - What are some typical applications of the ADR1581BRTZ-REEL7?
Typical applications include data acquisition systems, analog-to-digital converters, industrial and medical devices, and battery-powered devices. - How does the ADR1581BRTZ-REEL7 achieve its low temperature coefficient?
The device uses the band gap concept to achieve a low temperature coefficient, ensuring stable performance over a wide temperature range. - Can the ADR1581BRTZ-REEL7 be used with specific ADC models?
Yes, it is well-suited for use with ADCs such as the AD7714-3 and AD7715-3.
