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AD5556 Función - 16-/14-Bit Multiplying DAC - Analog Devices

Número de pieza AD5556
Descripción 16-/14-Bit Multiplying DAC
Fabricantes Analog Devices 
Logotipo Analog Devices Logotipo
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AD5556 Hoja de datos, Descripción, Manual
Data Sheet
Current Output, Parallel Input, 16-/14-Bit
Multiplying DACs with Four-Quadrant Resistors
AD5546/AD5556
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
R1 RCOM REF ROFS
R1 R2
ROFS RFB
RFB
VDD
WR
LDAC
DB0 TO DB15
AD5546/
AD5556
CONTROL
LOGIC
DAC
16/14
DAC
REGISTER
IOUT
GND
POR
MSB RS
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.
+10V
+
U2A
OP2177
C7
–10V
R1A
RCOMA
VREFA
R1 R2
ROFSA RFBA
ROFS
RFB
+15V
C6
C4
1µF
+5V
C1
1µF
C2
0.1µF
16-/14-BIT
DATA
VDD
U1
AD5546/AD5556
16-/14-BIT
DATA
IOUT
GND
C5
V+ 0.1µF
U2B
OP2177
+ V–
C8
1µF
VOUT
WR LDAC RS MSB
WR
LDAC
RS
MSB
C9
0.1µF
–15V
Figure 2. 16-/14-Bit, Four-Quadrant Multiplying DAC with a Minimum of External Components
Rev. D
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 that may result from its use. Specifications subject to change without notice. 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.





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