Overview
The AD7839ASZ, produced by Analog Devices Inc., is an octal 13-bit digital-to-analog converter (DAC) integrated into a single monolithic chip. This device features eight independent DAC channels, each capable of producing output voltages with a full-scale range of ±10 V from reference voltages of ±5 V. The AD7839ASZ is designed for high precision and reliability, making it suitable for a variety of applications requiring multiple analog output channels.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 13 |
| Number of D/A Converters | 8 |
| Output Type | Voltage - Buffered |
| Settling Time | 40 µs |
| Reference Type | External Voltage |
| Voltage Supply (Analog) | ±14.25 V ~ 15.75 V |
| Voltage Supply (Digital) | 5 V |
| INL/DNL (LSB) | ±2 (Max), ±0.9 (Max) |
| Architecture | R-2R |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 44-QFP (10x10 mm) |
Key Features
- Eight 13-bit DACs on a single monolithic chip.
- Output voltages with a full-scale range of ±10 V from reference voltages of ±5 V.
- Parallel 13-bit data input interface.
- Buffered outputs with gain-of-two amplifiers and external offset voltage capability.
- Synchronous update of all DAC outputs via the LDAC input.
- Asynchronous clear function to set outputs to a predefined voltage level.
- Available in a 44-lead MQFP package.
Applications
The AD7839ASZ is versatile and can be used in various applications requiring multiple precision analog output channels. These include:
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems.
- Automotive systems.
- Test and measurement equipment.
Q & A
- What is the resolution of the AD7839ASZ DAC?
The AD7839ASZ has a resolution of 13 bits. - How many DAC channels does the AD7839ASZ have?
The AD7839ASZ has eight independent DAC channels. - What is the full-scale output voltage range of the AD7839ASZ?
The full-scale output voltage range is ±10 V from reference voltages of ±5 V. - What is the settling time of the AD7839ASZ?
The settling time is 40 µs. - What type of package is the AD7839ASZ available in?
The AD7839ASZ is available in a 44-lead MQFP package. - How are the DAC outputs updated?
The DAC outputs can be updated individually or simultaneously by taking the LDAC input low. - What is the purpose of the CLR input?
The CLR input is used to asynchronously clear all analog outputs to a predefined voltage level set by the DUTGND pin. - What is the operating temperature range of the AD7839ASZ?
The operating temperature range is -40°C to 85°C. - Can the AD7839ASZ be used in high-reliability applications?
Yes, the AD7839ASZ is designed for high precision and reliability, making it suitable for critical applications. - How is data loaded into the AD7839ASZ?
Data is loaded in straight parallel 13-bit wide words using the WR, CS, and address pins (A0–A2).
