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Product Detailed Parameters
- Description：IC DAC 12BIT V-OUT 16CDIP
- 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：SPI
- Reference Type：External, Internal
- Voltage - Supply, Analog：±10.8V ~ 16.5V
- Voltage - Supply, Digital：-
- INL/DNL (LSB)：±1 (Max), ±0.9 (Max)
- Architecture：R-2R
- Operating Temperature：-55°C ~ 125°C
- Package / Case：16-CDIP (0.300", 7.62mm)
- Supplier Device Package：16-CERDIP
- Mounting Type：Through Hole
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Overview
The AD7249SQ is a dual 12-bit voltage-output digital-to-analog converter (DAC) from the DACPORT family, fabricated on LC2MOS CMOS technology. It integrates two complete DAC channels with output amplifiers and an internal Zener voltage reference, eliminating the need for external trimming. The device supports single or dual supply operation, offering selectable output ranges of 0 V to +5 V, 0 V to +10 V, and ±5 V. It features a 3-wire serial interface allowing data rates up to 2 MHz, resulting in a DAC update rate of 125 kHz. The S version is rated for an extended operating temperature range of –55 °C to +125 °C.
Feature Summary
- Dual 12-bit DAC channels with integrated output amplifiers and internal 5 V Zener reference
- Three selectable output voltage ranges per channel: 0 V to +5 V, 0 V to +10 V, and ±5 V
- Serial interface compatible with DSPs and microcontrollers, supporting 125 kHz update rate
- Extended industrial temperature range (–55 °C to +125 °C) for the S grade
Applications
- Process Control systems
- Industrial Automation equipment
- Digital Signal Processing Systems
- Input/Output Ports
Procurement Notes
Verify the specific suffix SQ against official Analog Devices documentation to confirm package type and temperature grade. Ensure power supply tolerances match the S version requirements (±5%) for specified performance. Check for lead-free compliance status if required by local regulations.
Selection Notes
Select the AD7249SQ when extended temperature operation down to –55 °C is required. The S version maintains similar static performance to the B version but with tighter power supply tolerance requirements. Ensure the application utilizes single or dual supplies within the specified VDD and VSS ranges to support the desired output voltage configuration.
Part Context
The AD7249 belongs to the DACPORT series, which combines DACs with buffered outputs and references in small packages. The S variant specifically denotes the extended temperature grade compared to the standard industrial A and B versions. It is available in 16-lead DIP and SOIC packages.
Replacement Considerations
Direct replacements include other grades of the AD7249 family such as AD7249BRZ or AD7249ARZ, noting differences in operating temperature ranges and power supply tolerances.
