The AD7547 contains two 12-bit current outpput DACs on one monolithic chip. Also on-chip are the level shifters, data registers and control logic for easy microprocessor interfacing. There are 12 data inputs. CSA, CSB, WR control DAC selection and loading. Data is latched into the DAC registers on the rising edge of WR. The device is speed compatible with most microprocessors and accepts TTL, 74HC and 5V CMOS logic level inputs.
The D/A convereters provide 4-quadrant multiplication capabilities with seperate reference inputs and feedback resistors. Monolithic construction ensures that thermal and gain error tracking is excellent. 12-bit monotonicity is guaranteed for both DACs over the full temperature range.
The AD7547 is manufactured using the Linear Compatible CMOS (LC²MOS) process. This allows fast digital logic and precision linear circuitry to be fabricated on the same die.
|Title||Content Type||File Type|
|AD7547: Military Data Sheet (Rev B, 12/2001) (pdf)||Data Sheets|
|AD7547: Dual 12-Bit CMOS DAC with Parallel Load Input Structure Data Sheet (Rev A, 06/1988) (pdf, 601 kB)||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-348: Avoiding Passive-Component Pitfalls
(pdf, 931 kB)
The Wrong Passive Component Can Derail Even the Best Op Amp or Data Converter. Here Are Some Basic Traps to Watch For.
AN-214: Ground Rules for High Speed Circuits
(pdf, 356 kB)
Layout and Wiring Are Critical in Video Converter Circuits.
|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
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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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