The AD7549 is a monolithic dual, 12-bit, current output D/A converter. It is packaged in both 0.3" wide 20-pin DIPs and in 20-terminal surface mount packages. Both DACs provide four quadrant multiplication capabilities with a separate reference input and feedback resistor for each DAC. The monolithic construction ensures excellent thermal tracking and gain error tracking between the two DACs.
The DACs in the AD7549 are each loaded in three 4-bit nibbles. The control logic is designed for easy processor interfacing. Input and DAC register loading is accomplished using address lines A0, A1, A2, and CS, WR lines. A logic high level on the CLR input clears all registers. Both DACs may be simultaneously update using the UPD input.
|Title||Content Type||File Type|
|AD7549: LC2MOS Dual 12-Bit µP-Compatible DAC Scanned Data Sheet (Rev A, 09/1996) (pdf, 495 kB)||Data Sheets|
|AD7549: Military Data Sheet (Rev B, 08/1996) (pdf)||Data Sheets|
|AN-912: Driving a Center-Tapped Transformer with a Balanced Current-Output DAC (pdf, 246 kB)||Application Notes|
|AN-320A: CMOS Multiplying DACs and Op Amps Combine to Build Programmable Gain Amplifier, Part 1 (pdf, 1295 kB)||Application Notes|
|AN-326: Interfacing the AD7549 to the MCS-48 and MCS-51 Microcomputer Families (pdf, 334 kB)||Application Notes|
|AN-325: 12-Bit Analog I/O Port Uses AD7549 Dual 12-Bit DAC and 8051 Microcomputer (pdf, 318 kB)||Application Notes|
|AN-137: A Digitally Programmable Gain and Attenuation Amplifier Design (pdf, 52 kB)||Application Notes|
|AN-209: 09: 8th Order Programmable Low-Pass Analog Filter Using Dual 12-Bit CMOS Multiplying DACs (pdf, 401 kB)||Application Notes|
AN-206: 06: CMOS Multiplying DAC Based Panning Circuit Provides Almost Constant Output Power
(pdf, 142 kB)
Audio signal processing sometimes requires splitting or "panning" a single signal source into multiple channels. This application note describes how CMOS M-DACs can control the relative signal levels of the derived channels.
|AN-225: 12-Bit Voltage-Output DACs for Single-Supply 5V and 12V Systems (pdf, 237 kB)||Application Notes|
ADI Warns Against Misuse of COTS Integrated Circuits
(pdf, 13 kB)
Invites Customer Participation in Creative Mil/Aero System Solutions
Space Qualified Parts List
(pdf, 93 kB)
This document lists 67 (240+) space level products that are available from Analog Devices. Many of the products listed are state-of-the-art data conversion and signal processing products that were previously only available as commercial or military Class B products. Through our Space Products Group and MIL-PRF-38535 certified Level V (Class S) facility, we are pleased to offer these products to the space marketplace.
|Digital to Analog Converters ICs Solutions Bulletin (pdf)||Solutions Bulletins|
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Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.
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