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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, fabricated on LC2MOS technology. It integrates two DAC channels with output amplifiers and an internal Zener voltage reference. The device supports single or dual supply operation, offering selectable unipolar ranges of 0 V to +5 V or 0 V to +10 V, and a bipolar range of ±5 V. It features a 3-wire serial interface allowing data rates up to 2 MHz for a 125 kHz update rate. Packaged in a 16-lead PDIP, it operates within a temperature range of -40°C to +85°C.
Feature Summary
- Dual 12-bit CMOS DACs with integrated output amplifiers and internal 5 V reference
- Three selectable output ranges per channel: 0 V to +5 V, 0 V to +10 V, and ±5 V
- 3-wire serial interface compatible with DSP processors and microcontrollers
- DAC update rate of 125 kHz with settling time typically under 10 µs
Applications
- Process control systems
- Industrial automation equipment
- Digital signal processing input/output ports
Procurement Notes
Verify the B version suffix indicates industrial temperature grade (-40°C to +85°C) and PDIP packaging. Confirm RoHS compliance status as specified in current manufacturer documentation. Ensure power supply decoupling capacitors are placed close to VDD and VSS pins to maintain performance.
Selection Notes
Select this component when a dual-channel 12-bit DAC with low pin count is required. The internal reference simplifies design if system accuracy allows for its ±50 mV tolerance. Use dual supplies if bipolar output or faster settling near zero is needed. Verify that the 2 kΩ load capability meets the application's drive requirements.
Part Context
The AD7249 belongs to the DACPORT family, which combines DACs with buffered outputs on a monolithic chip. The BNZ suffix denotes the industrial temperature range and leaded PDIP package. It serves as a cost-effective solution for applications requiring moderate resolution and speed without external trimming.
Replacement Considerations
The AD7249BRZ is the surface-mount SOIC equivalent. For single-channel requirements, the AD7243 series is available. Verify pin compatibility and electrical specifications before substituting.
