Moteur de recherche de fiches techniques de composants électroniques
  French  ▼

Delete All
ON OFF
ALLDATASHEET.FR

X  

Preview PDF Download HTML

AD5024 Fiches technique(PDF) 16 Page - Analog Devices

No de pièce AD5024
Description  2.7 V to 5.5 V, Serial-Input, Voltage-Output, 12-/16-Bit DAC
Download  24 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD5024 Fiches technique(HTML) 16 Page - Analog Devices

Back Button AD5024 Datasheet HTML 12Page - Analog Devices AD5024 Datasheet HTML 13Page - Analog Devices AD5024 Datasheet HTML 14Page - Analog Devices AD5024 Datasheet HTML 15Page - Analog Devices AD5024 Datasheet HTML 16Page - Analog Devices AD5024 Datasheet HTML 17Page - Analog Devices AD5024 Datasheet HTML 18Page - Analog Devices AD5024 Datasheet HTML 19Page - Analog Devices AD5024 Datasheet HTML 20Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 16 / 24 page
background image
AD5512A/AD5542A
Rev. A | Page 16 of 24
Assuming a perfect reference, the unipolar worst-case output
voltage can be calculated from the following equation:
(
)
INL
V
V
V
D
V
ZSE
GE
REF
N
UNI
OUT
+
+
+
×
=
2
where:
VOUT−UNI is the unipolar mode worst-case output.
D is the code loaded to DAC.
N is the resolution of the DAC.
VREF is the reference voltage applied to the part.
VGE is the gain error in volts.
VZSE is the zero-scale error in volts.
INL is the integral nonlinearity in volts.
BIPOLAR OUTPUT OPERATION
With the aid of an external op amp, the AD5512A/AD5542A
can be configured to provide a bipolar voltage output. A typical
circuit is shown in Figure 32. The matched bipolar offset resistors,
RFB and RINV, are connected to an external op amp to achieve
this bipolar output swing, typically RFB = RINV = 28 kΩ. Table 10
shows the transfer function for this output operating mode.
Also provided on the AD5542A are a set of Kelvin connections
to the analog ground inputs. The example includes the ADR421
2.5 V reference and the AD8628 low offset and zero-drift
reference buffer.
Table 10. AD5542A Bipolar Code Table
DAC Latch Contents
MSB
LSB
Analog Output
1111 1111 1111 1111
+V
REF × (32,767/32,768)
1000 0000 0000 0001
+V
REF × (1/32,768)
1000 0000 0000 0000
0 V
0111 1111 1111 1111
−V
REF × (1/32,768)
0000 0000 0000 0000
−V
REF × (32,768/32,768) = −VREF
Assuming a perfect reference, the worst-case bipolar output
voltage can be calculated from the following equation:
A
RD
RD
V
RD
V
V
V
REF
OS
UNI
OUT
BIP
OUT
)
2
(
1
)]
1
(
)
2
)(
[(
+
+
+
+
+
=
where:
VOUT−BIP is the bipolar mode worst-case output
VOUT−UNI is the unipolar mode worst-case output.
VOS is the external op amp input offset voltage.
RD is the RFB and RINV resistor matching error.
A is the op amp open-loop gain.
VOUT
REFS
REFF
INV
RFB
RINV
DGND AGNDF
VDD
DIN
SCLK
LDAC
CS
AD5512A/
AD5542A
AGNDS
0.1µF
0.1µF
10µF
BIPOLAR
OUTPUT
EXTERNAL
OP AMP
+2.5V
+5V
+5V
–5V
SERIAL
INTERFACE
RFB
Figure 32. Bipolar Output


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24 


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn