Overview
The AD584KH is a precision voltage reference IC produced by Analog Devices Inc. It is part of the AD584 series, which offers high precision and flexibility in voltage referencing. The AD584KH is an 8-terminal device that provides pin-programmable selection of four popular output voltages: 10.000 V, 7.500 V, 5.000 V, and 2.500 V. This device is particularly useful in applications requiring external precision voltage references, such as in digital-to-analog converters (DACs) and analog-to-digital converters (ADCs).
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Output Voltages | 10.000 V, 7.500 V, 5.000 V, 2.500 V | Pin-programmable |
| Input Voltage Range | 4.5 V to 30 V | |
| Temperature Range | 0°C to +70°C (AD584K), -55°C to +125°C (AD584T) | |
| Temperature Coefficient | 5 ppm/°C (AD584K), 15 ppm/°C (AD584T) | Maximum over specified temperature range |
| Output Current Capability | Source: 5 mA, Sink: 5 mA | Typical values over operating temperature range |
| Quiescent Current | Approximately 750 μA (on state), 100 μA (off state) | |
| Package Options | Hermetically sealed 8-terminal TO-99 metal can, 8-lead PDIP |
Key Features
- Pin-Programmable Output Voltages: The AD584KH allows for the selection of four standard output voltages (10.000 V, 7.500 V, 5.000 V, and 2.500 V) and can be configured for other voltages using external resistors.
- Laser Wafer Trimming: The device uses laser wafer trimming to achieve high accuracy and low temperature coefficients, ensuring minimal errors over temperature without the need for external components.
- Strobe Terminal: A unique strobe terminal allows the device to be turned on or off with a single low-power signal, reducing current drain to approximately 100 μA in the off state.
- Two-Terminal Zener Mode: The AD584KH can be operated in a two-terminal Zener mode at 5 V output and above, serving as a negative reference.
- Current Sourcing and Sinking: The output is configured to source or sink currents, providing good load regulation in either direction.
Applications
- Digital-to-Analog Converters (DACs): The AD584KH is recommended for use as a reference in 8-, 10-, or 12-bit DACs that require an external precision reference.
- Analog-to-Digital Converters (ADCs): It is ideal for ADCs of up to 14-bit accuracy, including successive approximation and integrating designs.
- General Precision Voltage Referencing: The device can serve as several references simultaneously when buffered properly, eliminating the need for multiple voltage references.
Q & A
- What are the programmable output voltages of the AD584KH?
The AD584KH offers four programmable output voltages: 10.000 V, 7.500 V, 5.000 V, and 2.500 V.
- What is the input voltage range for the AD584KH?
The input voltage can vary between 4.5 V and 30 V.
- What is the temperature range for the AD584KH?
The AD584K operates from 0°C to +70°C, while the AD584T operates from -55°C to +125°C.
- How does the strobe terminal function in the AD584KH?
The strobe terminal allows the device to be turned on or off with a single low-power signal, reducing current drain to approximately 100 μA in the off state.
- Can the AD584KH be used in a two-terminal Zener mode?
Yes, the AD584KH can be operated in a two-terminal Zener mode at 5 V output and above, serving as a negative reference.
- What is the quiescent current of the AD584KH in the on and off states?
In the on state, the total supply current is typically 750 μA, and in the off state, it is reduced to approximately 100 μA.
- What are the package options for the AD584KH?
The device is available in a hermetically sealed 8-terminal TO-99 metal can and an 8-lead PDIP.
- Can the AD584KH source or sink current?
Yes, the output of the AD584KH is configured to source or sink currents, providing good load regulation in either direction.
- What are the typical applications of the AD584KH?
The AD584KH is commonly used as a reference in DACs, ADCs, and general precision voltage referencing applications.
- How accurate is the AD584KH over temperature?
The device has a maximum temperature coefficient of 5 ppm/°C for the AD584K and 15 ppm/°C for the AD584T, ensuring high accuracy over the specified temperature range.
