Overview
The AD780BR-REEL, produced by Analog Devices Inc., is an ultrahigh precision band gap reference voltage IC. This device is designed to provide a highly accurate and stable voltage reference, making it ideal for various precision applications. The AD780BR-REEL offers a pin-programmable output of either 2.5 V or 3.0 V, with input voltages ranging from 4 V to 36 V. It is known for its low initial error, low temperature drift, and low output noise, which are crucial for enhancing the performance of high-resolution analog-to-digital converters (ADCs) and digital-to-analog converters (DACs), as well as general-purpose precision reference applications.
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 |
| Output Voltage Drift (-40°C to +85°C) | 3 ppm/°C | ||
| 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 | ||
| Output Noise (0.1 Hz to 10 Hz) | 4 µV p-p | ||
| Wideband Spectral Noise Density | 100 nV/√Hz | ||
| Quiescent Current | 1 mA | ||
| Input Voltage Range | 4 V | 36 V | |
| Operating Temperature Range | -40°C | +85°C | |
| Package Type | SOIC-8 |
Key Features
- Pin Programmable Output: The AD780BR-REEL allows for pin-programmable output of either 2.5 V or 3.0 V.
- Ultralow Drift: The device features an ultralow temperature drift of 3 ppm/°C max, ensuring high stability over temperature.
- High Accuracy: The output voltage is highly accurate, with a maximum error of ±1 mV for both 2.5 V and 3.0 V outputs.
- Low Noise: The AD780BR-REEL has extremely low noise, with a typical noise of 4 µV p-p from 0.1 Hz to 10 Hz and a wideband spectral noise density of 100 nV/√Hz.
- Low Quiescent Current: The device operates with a low quiescent current of 1 mA max.
- Output Trim Capability: An optional fine-trim connection is provided for applications requiring even higher accuracy.
- Series or Shunt Mode Operation: The AD780BR-REEL can operate in either series or shunt mode, providing flexibility in application design.
- Temperature Output Pin: The device includes a TEMP output pin that varies linearly with temperature, useful for monitoring system ambient temperature.
Applications
- High-Resolution Analog-to-Digital Converters (ADCs): The AD780BR-REEL is ideal for enhancing the performance of high-resolution ADCs due to its high accuracy and low noise.
- Digital-to-Analog Converters (DACs): It is also suitable for DAC applications, providing a stable and accurate reference voltage.
- General-Purpose Precision Reference Applications: The device is versatile and can be used in any general-purpose precision reference application requiring high accuracy and stability.
Q & A
- What are the available output voltages for the AD780BR-REEL?
The AD780BR-REEL provides pin-programmable output voltages of either 2.5 V or 3.0 V.
- What is the input voltage range for the AD780BR-REEL?
The input voltage range for the AD780BR-REEL is from 4 V to 36 V.
- What is the temperature drift specification for the AD780BR-REEL?
The temperature drift is specified as 3 ppm/°C max from -40°C to +85°C.
- What is the typical noise level of the AD780BR-REEL?
The typical noise level is 4 µV p-p from 0.1 Hz to 10 Hz and a wideband spectral noise density of 100 nV/√Hz.
- Can the AD780BR-REEL operate in both series and shunt modes?
Yes, the AD780BR-REEL can operate in both series and shunt modes.
- What is the quiescent current of the AD780BR-REEL?
The quiescent current is 1 mA max.
- Does the AD780BR-REEL have an output trim capability?
Yes, an optional fine-trim connection is provided for applications requiring even higher accuracy.
- What is the operating temperature range for the AD780BR-REEL?
The operating temperature range is from -40°C to +85°C.
- Does the AD780BR-REEL include a temperature output pin?
Yes, the device includes a TEMP output pin that varies linearly with temperature.
- In what package types is the AD780BR-REEL available?
The AD780BR-REEL is available in SOIC-8 packages.
