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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：±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-DIP (0.300", 7.62mm)
- Supplier Device Package：16-PDIP
- Mounting Type：Through Hole
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Overview
The AD7249BNZ is a dual 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, featuring on-chip Zener voltage reference and output amplifiers. It operates with single or dual supplies, offering selectable output ranges of 0 V to +5 V, 0 V to +10 V, and ±5 V. The device utilizes a 3-wire serial interface supporting data rates up to 2 MHz for a 125 kHz DAC update rate. Packaged in a 16-lead PDIP, it ensures low power dissipation and requires no external trims for specified performance.
Feature Summary
- Dual 12-bit CMOS DAC channels with integrated 5 V Zener reference
- Three selectable output ranges per channel: 0–5 V, 0–10 V, and ±5 V
- 3-wire serial interface compatible with DSPs and microcontrollers
- 125 kHz DAC update rate with 7 µs settling time
Applications
- Process control systems
- Industrial automation
- Digital signal processing input/output ports
Procurement Notes
Verify the 'BNZ' suffix indicates the lead-free (RoHS compliant) version in the standard PDIP-16 package. Confirm the specific grade (A, B, or S) if temperature range or accuracy specifications are critical, as the base part number covers multiple grades with varying performance parameters.
Selection Notes
Select this component for applications requiring two independent 12-bit outputs with minimal external components. Ensure supply voltages match the desired output range; dual supplies are required for the ±5 V bipolar range. Verify that the 3-wire serial protocol aligns with the host processor's available interfaces.
Part Context
The AD7249 belongs to the DACPORT family, designed for high-performance analog output in mixed-signal systems. The BNZ variant specifically denotes the industrial temperature grade (-40°C to +85°C) packaged in a plastic dual in-line format, distinguishing it from SOIC or extended temperature variants.
Replacement Considerations
Direct pin-compatible replacements within the same series include AD7249ARZ (SOIC package) or AD7249BRZ (SOIC package). For DIP packages, verify if AD7249ANZ serves as a suitable alternative based on required accuracy grades.
