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Product Detailed Parameters
- Description：IC DAC 12BIT V-OUT 24CDIP
- Series：DACPORT®
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：12
- Number of D/A Converters：2
- Settling Time：10µs
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：Parallel
- Reference Type：External, Internal
- Voltage - Supply, Analog：±15V
- Voltage - Supply, Digital：15V
- INL/DNL (LSB)：±1 (Max), ±0.9 (Max)
- Architecture：R-2R
- Operating Temperature：-55°C ~ 125°C
- Package / Case：24-CDIP (0.300", 7.62mm)
- Supplier Device Package：24-CDIP
- Mounting Type：Through Hole
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Overview
The AD7247AQ is a dual 12-bit voltage-output digital-to-analog converter (DAC) housed in a 24-lead ceramic dual-in-line package (CDIP). Fabricated using Linear Compatible CMOS (LC2MOS) technology, it integrates two DAC channels, on-chip voltage reference, output amplifiers, and reference buffer amplifiers. The device supports single or dual supply operation with VDD ranging from +10.8 V to +16.5 V and VSS from -10.8 V to -16.5 V. It features a parallel loading structure for direct microprocessor interfacing, with a typical data setup time of 30 ns. The extended temperature version operates from -55°C to +125°C.
Feature Summary
- Dual 12-bit resolution with integrated output amplifiers and Zener voltage reference
- Parallel interface structure allowing direct connection to 8-bit or 16-bit microprocessors
- Extended industrial temperature range (-55°C to +125°C) in hermetic CDIP-24 package
- Configurable unipolar (0V to +5V, 0V to +10V) and bipolar (±5V) output ranges
Applications
- Industrial process control systems requiring high reliability
- Test and measurement equipment needing precise analog signal generation
- Microprocessor-based instrumentation with direct parallel bus interfaces
Procurement Notes
Verify the suffix 'Q' indicates the ceramic dual-in-line package (CDIP-24) and extended temperature rating (-55°C to +125°C). Confirm RoHS compliance status as historical Analog Devices ceramic packages may differ from modern plastic variants. Check current availability as this component series may be subject to limited production runs or obsolescence notices.
Selection Notes
Select the AD7247AQ over the AD7247AAN/ABN when extended temperature operation down to -55°C is required. Choose this model over the AD7237A if a simple 12-bit parallel load interface is preferred over the double-buffered 8+4 bit structure. Ensure the application utilizes a 24-pin CDIP footprint rather than SOIC or Plastic DIP layouts.
Part Context
The AD7247AQ belongs to the AD7237A/AD7247A family, which are enhanced versions of the industry-standard AD7237/AD7247. These devices offer improved interface speeds, better reference variations with supply voltage, and wider operating voltage ranges compared to their predecessors. The 'AQ' designation specifically denotes the military-grade or extended temperature ceramic variant within this product line.
Replacement Considerations
Direct pin-compatible replacements include the AD7247AAN and AD7247ABN for industrial temperature ranges (-40°C to +85°C). For lower accuracy requirements, the original AD7247 (non-A version) may be considered, though interface timing and power specifications differ. Verify package compatibility between CDIP and other form factors.
