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Product Detailed Parameters
- Description：IC DAC 12BIT V-OUT 16SOIC
- Series：DACPORT®
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- 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：±11.4V ~ 15.75V
- Voltage - Supply, Digital：-
- INL/DNL (LSB)：±0.5 (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 AD7249BR-REEL 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 serial interfacing with a 125 kHz update rate and offers three selectable output ranges per channel: –5 V to +5 V, 0 V to +5 V, or 0 V to +10 V. Operating temperatures range from –40 °C to +85 °C. Power requirements specify VDD between +11.4 V and +15.75 V, with settling times of 10 µs maximum.
Feature Summary
- Dual 12-bit DAC channels with integrated Zener voltage reference and buffered output amplifiers
- Three-wire serial interface compatible with DSP processors and microcontrollers
- Selectable output ranges: ±5 V (dual supply), 0–5 V, or 0–10 V (single/dual supply)
- 125 kHz DAC update rate with 10 µs maximum settling time
Applications
- Process control systems
- Industrial automation equipment
- Digital signal processing systems
- Input/output ports
Procurement Notes
Verify the B version specifications against project requirements, noting the tighter power supply tolerance of ±5% compared to the A version's ±10%. Confirm that the SOIC-16 package and reel packaging format align with assembly capabilities. Ensure the industrial temperature range of –40 °C to +85 °C meets environmental constraints.
Selection Notes
Select this component when a dual-channel solution with an internal reference is required to minimize board space. The B version is suitable for applications needing stricter power supply regulation than the A version. Consider the 10 µs settling time and 125 kHz update rate for speed requirements. Verify that the available output ranges match the system voltage levels.
Part Context
The AD7249 belongs to the DACPORT family, utilizing LC2MOS technology for mixed-signal performance. The BR suffix indicates the B grade version in a 16-lead SOIC package, while the REEL suffix denotes tape-and-reel packaging for automated assembly. This part serves as a cost-effective alternative to discrete DAC solutions requiring external references.
Replacement Considerations
The AD7249BRZ is the lead-free equivalent of the AD7249BR. For pin-compatible upgrades within the same series, consider the AD7249ARZ for wider supply tolerance or the AD7249BNZ for through-hole mounting.
