công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

AD5260 bảng dữ liệu(PDF) 11 Page - Analog Devices

tên linh kiện AD5260
Giải thích chi tiết về linh kiện  8-Bit Dual Nonvolatile Memory Digital Potentiometer
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  AD [Analog Devices]
Trang chủ  http://www.analog.com
Logo AD - Analog Devices

AD5260 bảng dữ liệu(HTML) 11 Page - Analog Devices

Back Button AD5260 Datasheet HTML 7Page - Analog Devices AD5260 Datasheet HTML 8Page - Analog Devices AD5260 Datasheet HTML 9Page - Analog Devices AD5260 Datasheet HTML 10Page - Analog Devices AD5260 Datasheet HTML 11Page - Analog Devices AD5260 Datasheet HTML 12Page - Analog Devices AD5260 Datasheet HTML 13Page - Analog Devices AD5260 Datasheet HTML 14Page - Analog Devices AD5260 Datasheet HTML 15Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 20 page
background image
REV. 0
AD5232
–11–
USING ADDITIONAL INTERNAL NONVOLATILE EEMEM
The AD5232 contains additional internal user storage registers
(EEMEM) for saving constants and other 8-bit data. Table IV
provides an address map of the internal nonvolatile storage
registers shown in the functional block diagram as EEMEM1,
EEMEM2, and bytes of USER EEMEM.
Table IV. EEMEM Address Map
EEMEM
EEMEM Contents of Each
Address
Device EEMEM (ADDR)
(ADDR)
AD5232 (8B)
0000
RDAC1
0001
RDAC2
0010
USER 1
0011
USER 2
0100
USER 3
0101
USER 4
***
***
1111
USER 14
NOTES
1RDAC data stored in EEMEM locations are transferred to their
corresponding RDAC REGISTER at Power ON, or when
instructions Inst#1 and Inst#8 are executed.
2USER <data> is internal nonvolatile EEMEM registers available
to store and retrieve constants using Inst#3 and Inst#9 respectively.
3AD5232 EEMEM locations are 1 byte each (8 bits).
4Execution of instruction #1 leaves the device in the Read Mode power con-
sumption state. After the last Instruction #1 is executed, the user should
perform a NOP, Instruction #0 com mand to return the device to the low
power idle state.
VDD
A
W
B
VSS
Figure 8. Maximum Terminal Voltages Set by VDD and VSS
DETAIL POTENTIOMETER OPERATION
The actual structure of the RDAC is designed to emulate the
performance of a mechanical potentiometer. The patent-pending
RDAC contains multiple strings of connected resistor segments,
with an array of analog switches that act as the wiper connection
to several points along the resistor array. The number of points
is the resolution of the device. For example, the AD5232 has
256 connection points allowing it to provide better than 0.5%
setability resolution. Figure 9 provides an equivalent dia-
gram of the connections between the three terminals that
make up one channel of the RDAC. The SWA and SWB will
always be ON, while one of the switches SW(0) to SW(2
N–1)
will be ON one at a time depending upon the resistance step
decoded from the Data Bits. The resistance contributed by RW
must be accounted for in the output resistance. The SWA and
SWB will always be ON while one of the switches SW(0) to
SW(2
N–1) will be ON one at a time, depending upon the
resistance step decoded from the Data Bits. The resistance
contributed by RW must be accounted for in the output resistance.
SWA
SW(2N – 1)
AX
WX
SW(2N – 2)
SW(1)
SW(0)
SWB
BX
RDAC
WIPER
REGISTER
AND
DECODER
RS = RAB /2
N
RS
RS
RS
DIGITAL
CIRCUITRY
OMITTED FOR
CLARITY
Figure 9. Equivalent RDAC Structure (Patent Pending)
Table V. RDAC and Digital Register Address Map
Register Address
Name of Register
*
(ADDR)
AD5232 (8B)
0000
RDAC1
0001
RDAC2
*RDACx registers contain data determining the
position of the variable resistor wiper.
TERMINAL VOLTAGE OPERATING RANGE
The digital potentiometer’s positive VDD and negative VSS power
supply defines the boundary conditions for proper three-terminal
programmable resistance operation. Signals present on terminals
A, B, W that exceed VDD or VSS will be clamped by a forward
biased diode; see Figure 8.
The ground pin of the AD5232 device is primarily used as a
digital ground reference, which needs to be tied to the PCBs’
common ground. The digital input logic signals to the AD5232
must be referenced to the devices’ ground pin (GND), and
satisfy the logic minimum input high level and the maximum
low level defined in the specification table of this data sheet.
An internal level-shift circuit between the digital interface and
the wiper switch control ensures that the common-mode voltage
range of the three-terminals A, W, and B extends from VSS to VDD.


Số phần tương tự - AD5260

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
Analog Devices
AD5260 AD-AD5260 Datasheet
664Kb / 16P
   2-Channel, 256-Position Digital Potentiometer
REV. 0
AD5260 AD-AD5260 Datasheet
859Kb / 20P
   1-/2-Channel 15 V Digital Potentiometers
REV. 0
AD5260BRU20 AD-AD5260BRU20 Datasheet
859Kb / 20P
   1-/2-Channel 15 V Digital Potentiometers
REV. 0
AD5260BRU20-REEL7 AD-AD5260BRU20-REEL7 Datasheet
859Kb / 20P
   1-/2-Channel 15 V Digital Potentiometers
REV. 0
AD5260BRU200 AD-AD5260BRU200 Datasheet
859Kb / 20P
   1-/2-Channel 15 V Digital Potentiometers
REV. 0
More results

Mô tả tương tự - AD5260

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
Analog Devices
AD5232BRUZ10-REEL7 AD-AD5232BRUZ10-REEL7 Datasheet
867Kb / 24P
   Nonvolatile Memory,Dual 256-Position Digital Potentiometer
REV. C
AD5235 AD-AD5235_15 Datasheet
788Kb / 32P
   Nonvolatile Memory, Dual 1024-Position Digital Potentiometer
Rev. F
AD5232 AD-AD5232_15 Datasheet
867Kb / 24P
   Nonvolatile Memory, Dual 256-Position Digital Potentiometer
REV. B
AD5232BRUZ10 AD-AD5232BRUZ10 Datasheet
867Kb / 24P
   Nonvolatile Memory,Dual 256-Position Digital Potentiometer
REV. C
AD5235-EP AD-AD5235-EP Datasheet
376Kb / 16P
   Nonvolatile Memory, Dual 1024-Position Digital Potentiometer
REV. 0
AD5235BRUZ250 AD-AD5235BRUZ250 Datasheet
788Kb / 32P
   Nonvolatile Memory, Dual 1024-Position Digital Potentiometer
Rev. F
logo
Dallas Semiconductor
DS1855 DALLAS-DS1855 Datasheet
252Kb / 20P
   Dual Nonvolatile Digital Potentiometer and Secure Memory
logo
Maxim Integrated Produc...
DS1855 MAXIM-DS1855 Datasheet
509Kb / 21P
   Dual Nonvolatile Digital Potentiometer and Secure Memory
19-6586; Rev 2; 1/13
logo
Analog Devices
AD5231 AD-AD5231_15 Datasheet
536Kb / 28P
   Nonvolatile Memory, 1024-Position Digital Potentiometer
REV. D
logo
Xicor Inc.
X9221 XICOR-X9221 Datasheet
65Kb / 14P
   Dual E2POT??Nonvolatile Digital Potentiometer
More results


Html Pages

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


bảng dữ liệu tải về

Go To PDF Page


Link URL




Chính sách bảo mật
ALLDATASHEET.VN
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
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