Overview
The AD7247JR, produced by Analog Devices Inc., is an enhanced version of the industry-standard AD7247 dual 12-bit digital-to-analog converter (DAC). This component is part of the DACPORT® family, known for its compact design and high reliability. The AD7247JR features a single chip design that integrates two 12-bit DACs with output amplifiers and a Zener voltage reference, making it ideal for applications requiring precise analog output control.
Although the AD7247JR is currently obsolete and no longer manufactured, it remains a significant component in legacy systems and designs. For new projects, substitutes like the AD7247JRZ are recommended.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12-bit |
| Number of DACs | 2 |
| Output Voltage Ranges | 0 V to +5 V, 0 V to +10 V, ±5 V |
| Power Supply Range | 12 V to 15 V |
| Interface Type | Parallel (12-bit data bus for AD7247A) |
| Settling Time | Faster settling times compared to previous models |
| Operating Temperature Range | –40°C to +85°C (for AD7247ABR), –55°C to +125°C (for AD7247ATQ) |
| Package Types | Plastic DIP, SOIC, Cerdip |
Key Features
- Dual 12-bit DACs: The AD7247JR includes two independent 12-bit DACs, each with its own output amplifier and reference voltage input.
- Wide Power Supply Range: Operates from 12 V to 15 V supplies, making it versatile for various system designs.
- Flexible Output Ranges: Supports output voltage ranges of 0 V to +5 V, 0 V to +10 V, and ±5 V, which can be configured using the ROFS inputs.
- High-Speed Interface: Features high-speed data latches and interface logic, allowing easy interfacing with 8-bit or 16-bit microprocessors.
- Internal Reference: Includes an on-chip 5 V Zener voltage reference, which can be used internally or externally.
- ESD Protection: Equipped with proprietary ESD protection circuitry to prevent damage from electrostatic discharges.
Applications
The AD7247JR is suitable for a variety of applications that require precise analog output control, including:
- Industrial Control Systems: For controlling analog outputs in industrial automation and process control.
- Medical Devices: In medical equipment where accurate analog signals are crucial.
- Aerospace and Defense: For applications requiring high reliability and precision in harsh environments.
- Test and Measurement Equipment: For generating precise analog signals in test and measurement instruments.
Q & A
- What is the resolution of the AD7247JR DACs?
The AD7247JR features dual 12-bit DACs.
- What are the available output voltage ranges for the AD7247JR?
The output voltage ranges include 0 V to +5 V, 0 V to +10 V, and ±5 V.
- What is the power supply range for the AD7247JR?
The AD7247JR operates from 12 V to 15 V supplies.
- Is the AD7247JR still in production?
No, the AD7247JR is obsolete and no longer manufactured. However, substitutes like the AD7247JRZ are available.
- What types of packages are available for the AD7247JR?
The AD7247JR is available in Plastic DIP, SOIC, and Cerdip packages.
- Does the AD7247JR have built-in ESD protection?
- Can the AD7247JR be used with both 8-bit and 16-bit microprocessors?
- What is the operating temperature range for the AD7247JR?
The operating temperature range varies by package type but includes –40°C to +85°C and –55°C to +125°C for different models.
- Does the AD7247JR require external user trims for full performance?
No, the AD7247JR does not require external user trims to achieve full specified performance.
- Can the AD7247JR use an external reference voltage?
