Overview
The AD7247KN, produced by Analog Devices Inc., is a dual 12-bit digital-to-analog converter (DAC) that is part of the AD7237/AD7247 series. Although the AD7247KN is currently obsolete and no longer manufactured, it remains a significant component in the realm of precision DACs. This device is fabricated using Linear Compatible CMOS (LCMOS) technology, which combines precision bipolar circuits with low power CMOS logic, ensuring high performance and reliability. The AD7247KN features a complete monolithic CMOS chip with output amplifiers and a Zener voltage reference, eliminating the need for external user trims to achieve full specified performance. It is designed to be microprocessor compatible, with high-speed data latches and interface logic, making it suitable for a variety of applications requiring precise analog output control.
Key Specifications
| Parameter | Description |
|---|---|
| Resolution | Dual 12-bit |
| Supply Voltage | 12 V to 15 V |
| Analog Output Voltage | 0 V to +5 V, 0 V to +10 V (single supply); ±5 V (dual supply) |
| Number of Pins | 24 |
| Package Types | 24-pin PDIP, 24-lead SOIC (Wide), 24-lead CerDIP (Narrow 0.3 Inch) |
| Reference Voltage | On-chip 5 V reference or external reference |
| Output Amplifiers | Capable of developing +10 V across a 2 kΩ load to GND |
| RoHS Status | ROHS3 Compliant |
Key Features
- Complete dual 12-bit DAC with output amplifiers and Zener voltage reference on a single monolithic CMOS chip.
- No external user trims required for full specified performance.
- Microprocessor compatible with high-speed data latches and interface logic.
- Accepts 12-bit parallel data with separate Chip Select input for each DAC.
- Faster settling times and improved reference variations with VDD.
- REF OUT/REF IN function allows use of on-chip or external reference voltage.
- Available in various package types including PDIP, SOIC, and CerDIP.
Applications
The AD7247KN is suitable for a wide range of applications that require precise digital-to-analog conversion, including:
- Industrial control systems
- Medical equipment
- Aerospace and defense systems
- Automotive systems
- Data acquisition and instrumentation
Q & A
- What is the resolution of the AD7247KN DAC?
The AD7247KN is a dual 12-bit digital-to-analog converter.
- What are the supply voltage ranges for the AD7247KN?
The AD7247KN operates from 12 V to 15 V supplies.
- What are the available output voltage ranges for the AD7247KN?
The output voltage ranges include 0 V to +5 V, 0 V to +10 V (single supply), and ±5 V (dual supply).
- Does the AD7247KN require external user trims for full performance?
No, the AD7247KN does not require external user trims to achieve full specified performance.
- What package types are available for the AD7247KN?
The AD7247KN is available in 24-pin PDIP, 24-lead SOIC (Wide), and 24-lead CerDIP (Narrow 0.3 Inch) packages.
- Can the AD7247KN use an external reference voltage?
Yes, the AD7247KN provides a REF OUT/REF IN function that allows the use of either the on-chip 5 V reference or an external reference voltage.
- Is the AD7247KN microprocessor compatible?
Yes, the AD7247KN is microprocessor compatible with high-speed data latches and interface logic.
- What is the RoHS status of the AD7247KN?
The AD7247KN is ROHS3 Compliant.
- Why is the AD7247KN obsolete?
The AD7247KN is obsolete and no longer manufactured by Analog Devices Inc., but substitutes like the AD7247KNZ are available.
- Where can I find detailed specifications and datasheets for the AD7247KN?
Detailed specifications and datasheets can be found on the official Analog Devices website or through authorized distributors like Digi-Key and Easybom.
