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Product Detailed Parameters
- Description：IC DAC 12BIT V-OUT 16SOIC
- 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-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：16-SOIC
- Mounting Type：Surface Mount
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Overview
The AD7249ARZ is a dual 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, featuring on-chip output amplifiers and a Zener voltage reference. It operates with single or dual supplies, providing selectable output ranges of 0 V to +5 V, 0 V to +10 V, or ±5 V. The device utilizes a 3-wire serial interface for data input, supporting update rates up to 125 kHz. Key electrical specifications include a settling time of 10 µs, differential nonlinearity of ±0.9 LSB, and integral nonlinearity of ±1 LSB. It is housed in a 16-lead SOIC package and functions within an industrial temperature range of -40°C to +85°C.
Feature Summary
- Dual 12-bit DAC channels with integrated output amplifiers and internal 5 V reference
- Three selectable output voltage ranges per channel: 0–5 V, 0–10 V, and ±5 V
- 3-wire serial interface compatible with DSP processors and microcontrollers
- 125 kHz DAC update rate with 10 µs maximum settling time
Applications
- Process control systems
- Industrial automation equipment
- Digital signal processing I/O ports
Procurement Notes
Verify the specific grade suffix (A, B, or S) against application requirements, as temperature ranges and power supply tolerances vary by version. Confirm RoHS compliance status for the specific manufacturing lot. Ensure ESD precautions are observed during handling due to CMOS sensitivity.
Selection Notes
Select the AD7249ARZ when dual-channel precision is required with minimal external component count. Choose this part if the design necessitates a 3-wire serial interface to save GPIO pins. Verify that the required output swing matches the available unipolar or bipolar configurations supported by the internal gain resistors.
Part Context
The AD7249 belongs to the DACPORT family, which integrates DAC cores with buffer amplifiers. The 'ARZ' designation indicates the A-grade industrial temperature variant (-40°C to +85°C) packaged in a 16-lead SOIC with lead-free/RoHS-compliant termination. This distinguishes it from the discontinued AD7249AR and the extended temperature S-version.
Replacement Considerations
The AD7249AR is listed as a direct replacement but is obsolete. No other active cross-model substitutes are documented in the provided source material.
