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ADR421 bảng dữ liệu(PDF) 1 Page - Analog Devices

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Giải thích chi tiết về linh kiện  Current Output, Parallel Input, 16-/14-Bit Multiplying DACs with Four-Quadrant Resistors
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ADR421 bảng dữ liệu(HTML) 1 Page - Analog Devices

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Current Output, Parallel Input, 16-/14-Bit
Multiplying DACs with Four-Quadrant Resistors
Data Sheet
AD5546/AD5556
Rev. D
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2004-2011 Analog Devices, Inc. All rights reserved.
FEATURES
16-bit resolution
14-bit resolution
2- or 4-quadrant multiplying DAC
±1 LSB DNL
±1 LSB INL
Operating supply voltage: 2.7 V to 5.5 V
Low noise: 12 nV/√Hz
Low power: IDD = 10 μA
0.5 μs settling time
Built-in RFB facilitates current-to-voltage conversion
Built-in 4-quadrant resistors allow 0 V to –10 V, 0 V to +10 V,
or ±10 V outputs
2 mA full-scale current ±20%, with VREF = 10 V
Automotive operating temperature: –40°C to +125°C
Compact TSSOP-28 package
APPLICATIONS
Automatic test equipment
Instrumentation
Digitally controlled calibration
Digital waveform generation
FUNCTIONAL BLOCK DIAGRAM
DAC
AD5546/
AD5556
WR
LDAC
MSB
RS
DB0 TO DB15
CONTROL
LOGIC
DAC
REGISTER
POR
16/14
VDD
R1
R2
ROFS RFB
R1
RCOM
REF ROFS
RFB
IOUT
GND
Figure 1. AD5546/AD5556 Simplified Block Diagram
GENERAL DESCRIPTION
The AD5546/AD5556 are precision 16-/14-bit, multiplying, low
power, current output, parallel input digital-to-analog converters
(DACs). They operate from a single 2.7 V to 5.5 V supply with
±10 V multiplying references for four-quadrant outputs. Built-
in four-quadrant resistors facilitate the resistance matching and
temperature tracking that minimize the number of components
needed for multiquadrant applications. The feedback resistor
(RFB) simplifies the I-V conversion with an external buffer. The
AD5546/AD5556 are packaged in compact TSSOP-28 packages
with operating temperatures from –40°C to +125°C.
The EVAL-AD5546SDZ is available for evaluating DAC perfor-
mance. For more information, see the UG-309 evaluation board
user guide.
VDD
ROFS
ROFSA
VOUT
RFB
RFBA
C6
GND
U1
AD5546/AD5556
IOUT
R2
R1
RCOMA
R1A
16-/14-BIT
DATA
16-/14-BIT
DATA
VREFA
U2B
OP2177
+
C4
1µF
C5
0.1µF
C8
1µF
C9
0.1µF
+15V
–15V
WR
WR
LDAC
LDAC
RS
RS
MSB
MSB
C2
0.1µF
C1
1µF
V+
V–
U2A
OP2177
+
C7
+5V
+10V
–10V
Figure 2. 16-/14-Bit, Four-Quadrant Multiplying DAC with a Minimum of External Components


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