Os motores de busca de Datasheet de Componentes eletrônicos
  Portuguese  ▼
ALLDATASHEETPT.COM

X  

AD5242 Folha de dados(PDF) 11 Page - Analog Devices

Nome de Peças AD5242
Descrição Electrónicos  256-Position and 33-Position Digital Potentiometers
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

AD5242 Folha de dados(HTML) 11 Page - Analog Devices

Back Button AD5242 Datasheet HTML 7Page - Analog Devices AD5242 Datasheet HTML 8Page - Analog Devices AD5242 Datasheet HTML 9Page - Analog Devices AD5242 Datasheet HTML 10Page - Analog Devices AD5242 Datasheet HTML 11Page - Analog Devices AD5242 Datasheet HTML 12Page - Analog Devices AD5242 Datasheet HTML 13Page - Analog Devices AD5242 Datasheet HTML 14Page - Analog Devices AD5242 Datasheet HTML 15Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 16 page
background image
REV. B
AD5200/AD5201
–11–
CODE – Decimal
100.0
10.0
0.1
032
1.0
64
96
128
160
192
224
256
RAB = 10k
RAB = 50k
TPC 31. AD5200 I MAX vs. Code
CODE – Decimal
100.0
10.0
0.1
04
1.0
812
16
20
24
28
32
RAB = 10k
RAB = 50k
TPC 32. AD5201 I MAX vs. Code
OPERATION
The AD5200/AD5201 provide 255 and 33 positions digitally-
controlled variable resistor (VR) devices. Changing the
programmed VR settings is accomplished by clocking in an 8-bit
serial data word for AD5200, and a 6-bit serial data word for
AD5201, into the SDI (Serial Data Input) pins. Table I provides
the serial register data word format. The AD5200/AD5201 are
preset to a midscale internally during power-on condition. In
addition, the AD5200/AD5201 contain power shutdown
SHDN pins that place the RDAC in a zero power consump-
tion state where the immediate switches next to Terminals A and
B are open-circuited. Meanwhile, the wiper W is connected to B
terminal, resulting in only leakage current consumption in the VR
structure. During shutdown, the VR latch contents are maintained
when the RDAC is inactive. When the part is returned from
shutdown, the stored VR setting will be applied to the RDAC.
Table I. AD5200 Serial-Data Word Format
7
B6
B5
B4
B3
B2
B1
B0
B
7
D6
D5
D4
D3
D2
D1
D0
D
B
S
MB
S
L
27
20
Table II. AD5201 Serial-Data Word Format
5
B
*
4
B3
B2
B1
B0
B
5
D
*
4
D3
D2
D1
D0
D
B
S
MB
S
L
25
20
*Six data bits are needed for 33 positions.
PROGRAMMING THE VARIABLE RESISTOR
Rheostat Operation
The nominal resistance of the RDAC between Terminals A and
B are available with values of 10 k
Ω and 50 kΩ. The final two
digits of the part number determine the nominal resistance
value, e.g., 10 k
Ω = 10 and 50 kΩ = 50. The nominal resistance
(RAB) of AD5200 has 256 contact points accessed by the wiper
terminal. The 8-bit data word in the RDAC latch of AD5200 is
decoded to select one of the 256 possible settings. In both parts,
the wiper’s first connection starts at the B terminal for data 00H.
This B-terminal connection has a wiper contact resistance of
50
Ω as long as valid V
DD/VSS is applied, regardless of the nominal
resistance. For a 10 k
Ω part, the second connection of AD5200 is
the first tap point with 89
Ω [RWB = RAB/255 + RW = 39 Ω + 50 Ω]
for data 01H. The third connection is the next tap point representing
78 + 50 = 128
Ω for data 02H. Due to its unique internal structure,
AD5201 has 5-bit + 1 resolution, but needs a 6-bit data word to
achieve the full 33 steps resolution. The 6-bit data word in the
RDAC latch is decoded to select one of the 33 possible settings.
Data 34 to 63 will automatically be equal to Position 33. The
wiper 00H connection of AD5201 gives 50
Ω. Similarly, for a
10 k
Ω part, the first tap point of AD5201 yields 363 Ω for
data 01H, 675
Ω for data 02H. For both AD5200 and AD5201,
each LSB data value increase moves the wiper up the resistor
ladder until the last tap point is reached. Figures 2a and 2b show
the simplified diagrams of the equivalent RDAC circuits.


Nº de peça semelhante - AD5242

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Analog Devices
AD5242 AD-AD5242 Datasheet
664Kb / 16P
   2-Channel, 256-Position Digital Potentiometer
REV. 0
AD5242 AD-AD5242 Datasheet
268Kb / 20P
   8-Bit Dual Nonvolatile Memory Digital Potentiometer
REV. 0
AD5242 AD-AD5242 Datasheet
394Kb / 16P
   I2C Compatible 256-Position Digital Potentiometers
REV. B
AD5242BR10 AD-AD5242BR10 Datasheet
394Kb / 16P
   I2C Compatible 256-Position Digital Potentiometers
REV. B
AD5242BR10 AD-AD5242BR10 Datasheet
550Kb / 20P
   I2C-Compatible, 256-Position Digital Potentiometers
REV. C
More results

Descrição semelhante - AD5242

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Analog Devices
AD5200BRM50 AD-AD5200BRM50 Datasheet
1Mb / 15P
   256-Position and 33-Position Digital Potentiometers
REV. D
AD5200BRM10 AD-AD5200BRM10 Datasheet
1Mb / 15P
   256-Position and 33-Position Digital Potentiometers
REV. D
AD5200 AD-AD5200_15 Datasheet
1Mb / 15P
   256-Position and 33-Position Digital Potentiometers
REV. D
AD5201 AD-AD5201_15 Datasheet
1Mb / 15P
   256-Position and 33-Position Digital Potentiometers
REV. D
AD5292BRUZ-100 AD-AD5292BRUZ-100 Datasheet
1Mb / 32P
   256-/1024-Position, Digital Potentiometers
REV. D
AD5291 AD-AD5291_14 Datasheet
1,019Kb / 30P
   256-/1024-Position, Digital Potentiometers
AD5241BR10 AD-AD5241BR10 Datasheet
394Kb / 16P
   I2C Compatible 256-Position Digital Potentiometers
REV. B
AD5241 AD-AD5241_09 Datasheet
550Kb / 20P
   I2C-Compatible, 256-Position Digital Potentiometers
REV. C
AD5241 AD-AD5241_15 Datasheet
550Kb / 20P
   IC-Compatible, 256-Position Digital Potentiometers
REV. C
AD5242 AD-AD5242_15 Datasheet
550Kb / 20P
   IC-Compatible, 256-Position Digital Potentiometers
REV. C
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


Folha de dados Download

Go To PDF Page


Ligação URL




Privacy Policy
ALLDATASHEETPT.COM
ALLDATASHEET é útil para você?  [ DONATE ] 

Sobre Alldatasheet   |   Publicidade   |   Contato conosco   |   Privacy Policy   |   roca de Link   |   Lista de Fabricantes
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
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com