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Product Detailed Parameters
- Description：IC DAC 12BIT V-OUT 16DIP
- 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：-40°C ~ 85°C
- Package / Case：16-DIP (0.300", 7.62mm)
- Supplier Device Package：16-PDIP
- Mounting Type：Through Hole
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Overview
The AD7249ANZ is a dual 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, packaged in a 16-lead SOIC. It integrates output amplifiers and a Zener voltage reference on a monolithic CMOS chip, eliminating the need for external trims. The device supports single or dual supply operation with selectable output ranges of 0 V to +5 V, 0 V to +10 V, or ±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 industrial temperature version operates between -40 °C and +85 °C.
Feature Summary
- Dual 12-bit DAC channels with integrated Zener voltage reference and buffered output amplifiers
- 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
- Clear function resets outputs to a known state, useful for power-on reset
Applications
- Process control systems
- Industrial automation equipment
- Digital signal processing systems
- Input/output ports
Procurement Notes
Verify the suffix 'ANZ' indicates the industrial temperature range (-40 °C to +85 °C) and lead-free RoHS-compliant packaging. Confirm the package type is 16-lead SOIC. Check current availability status as older revisions may be subject to discontinuation notices.
Selection Notes
Select the AD7249ANZ when two independent 12-bit voltage outputs are required in a small footprint. Ensure the application supports the specified supply voltages (+10.8 V to +16.5 V for VDD). Verify that the serial interface timing requirements align with the host processor's capabilities.
Part Context
The AD7249 belongs to the DACPORT family of mixed-signal ICs. The 'A' suffix denotes the industrial temperature grade, while 'N' typically signifies the plastic DIP or SOIC package variant depending on the specific datasheet revision context, though the ANZ is specifically listed as SOIC in distributor data. It is part of a broader line including single-channel and higher-resolution variants.
Replacement Considerations
Direct replacements include other AD7249 variants such as AD7249BRZ or AD7249ARZ, noting differences in accuracy grades and temperature ranges. Cross-family alternatives should be evaluated for pin compatibility and performance specifications.
