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| 型號(hào)： | AD7547 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | LC2MOS Parallel Load Dual 12-Bit DAC(LC2MOS并行載入雙12位D/A轉(zhuǎn)換器) |
| 中文描述： | LC2MOS并聯(lián)負(fù)載雙12位DAC（LC2MOS并行載入雙12位的D / A轉(zhuǎn)換器） |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 200K |
| 代理商： | AD7547 |
FUNCT IONAL BLOCK DIAGRAM
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
LC
2
MOS
Parallel Loading Dual 12-Bit DAC
AD7547
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
GE NE RAL DE SCRIPT ION
T he AD7547 contains two 12-bit current output DACs on one
monolithic chip. Also on-chip are the level shifters, data regis-
ters and control logic for easy microprocessor interfacing. T here
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
. T he device is speed compatible with most micro-
processors and accepts T T L, 74HC and 5 V CMOS logic level
inputs.
T he D/A converters provide 4-quadrant multiplication capabili-
ties with separate 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.
T he AD7547 is manufactured using the Linear Compatible
CMOS (LC
2
MOS) process. T his allows fast digital logic and
precision linear circuitry to be fabricated on the same die.
FEATURES
Two 12-Bit DACs in One Package
DAC Ladder Resistance Matching: 0.5%
Space Saving Skinny DIP and Surface
Mount Packages
4-Quadrant Multiplication
Low Gain Error (1 LSB max Over Temperature)
Fast Interface Timing
APPLICATIONS
Automatic Test Equipment
Programmable Filters
Audio Applications
Synchro Applications
Process Control
PRODUCT HIGHLIGHT S
1. DAC to DAC Matching
Since both DACs are fabricated on the same chip, precise
matching and tracking is inherent. Many applications which
are not practical using two discrete DACs are now possible.
T ypical matching: 0.5%.
2. Small Package Size
T he AD7547 is available in 0.3" wide 24-pin DIPs and
SOICs and in 28-terminal surface mount packages.
3. Wide Power Supply T olerance
T he device operates on a +12 V to +15 V V
DD
, with
±
10%
tolerance on this nominal figure. All specifications are guar-
anteed over this range.
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