Overview
The AD780BRZ-REEL, produced by Analog Devices Inc., is an ultrahigh precision band gap reference voltage. This component is designed to provide a highly accurate and stable 2.5 V or 3.0 V output voltage from input voltages ranging between 4.0 V and 36 V. It is particularly suited for enhancing the performance of high-resolution analog-to-digital converters (ADCs) and digital-to-analog converters (DACs), as well as for general-purpose precision reference applications. The AD780BRZ-REEL features low initial error, minimal temperature drift, and low output noise, making it an ideal choice for demanding applications requiring high precision and stability.
Key Specifications
| Parameter | Min | Typ | Max |
|---|---|---|---|
| Output Voltage (2.5 V) | 2.495 V | 2.5 V | 2.505 V |
| Output Voltage (3.0 V) | 2.995 V | 3.0 V | 3.005 V |
| Temperature Drift (-40°C to +85°C) | 7 ppm/°C (AD780BR) | ||
| Line Regulation (2.5 V Output, 4 V ≤ +VIN ≤ 36 V) | 10 µV/V | ||
| Line Regulation (3.0 V Output, 4.5 V ≤ +VIN ≤ 36 V) | 10 µV/V | ||
| Quiescent Current | 1 mA | ||
| Noise (Wideband Spectral Noise Density) | 100 nV/√Hz | ||
| Operating Temperature Range | -40°C | +85°C |
Key Features
- Pin Programmable Output: The AD780BRZ-REEL allows for pin-programmable 2.5 V or 3.0 V output voltages.
- Ultralow Drift: The component features an ultralow temperature drift of up to 7 ppm/°C.
- High Accuracy: It offers high accuracy with output voltages of ±1 mV max for both 2.5 V and 3.0 V outputs.
- Low Noise: The AD780BRZ-REEL has extremely low noise, with a wideband spectral noise density of typically 100 nV/√Hz.
- Low Quiescent Current: The quiescent current is as low as 1 mA max.
- Output Trim Capability: An optional fine-trim connection is available for applications requiring even higher accuracy.
- Series or Shunt Mode Operation: The component can operate in series or shunt mode, allowing for positive or negative output voltages without external components.
- Temperature Output Pin: The AD780 provides a TEMP output pin that varies linearly with temperature, useful for monitoring system ambient temperature.
Applications
The AD780BRZ-REEL is ideal for various precision reference applications, including:
- High-Resolution ADCs and DACs: Enhances the performance of analog-to-digital and digital-to-analog converters.
- General-Purpose Precision References: Suitable for any application requiring high precision and stability in voltage reference.
- Industrial and Medical Devices: Used in systems where accurate and stable voltage references are critical.
Q & A
- What are the output voltage options for the AD780BRZ-REEL?
The AD780BRZ-REEL can provide pin-programmable 2.5 V or 3.0 V output voltages. - What is the temperature drift specification for the AD780BRZ-REEL?
The temperature drift is up to 7 ppm/°C from -40°C to +85°C. - What is the quiescent current of the AD780BRZ-REEL?
The quiescent current is as low as 1 mA max. - Can the AD780BRZ-REEL operate in series or shunt mode?
Yes, it can operate in both series and shunt modes, allowing for positive or negative output voltages without external components. - What is the noise performance of the AD780BRZ-REEL?
The component has a wideband spectral noise density of typically 100 nV/√Hz. - Does the AD780BRZ-REEL have an output trim capability?
Yes, an optional fine-trim connection is available for applications requiring even higher accuracy. - What is the operating temperature range of the AD780BRZ-REEL?
The operating temperature range is from -40°C to +85°C. - Can the AD780BRZ-REEL be used to monitor system ambient temperature?
Yes, it provides a TEMP output pin that varies linearly with temperature. - What are the typical applications of the AD780BRZ-REEL?
It is used in high-resolution ADCs and DACs, general-purpose precision references, and in industrial and medical devices where accurate and stable voltage references are critical. - What is the input voltage range for the AD780BRZ-REEL?
The input voltage range is between 4.0 V and 36 V.
