Electronic Components Datasheet Search
  English  ▼

Delete All


Preview PDF Download HTML

DS1868 Datasheet(PDF) 3 Page - Dallas Semiconductor

Part No. DS1868
Description  Dual Digital Potentiometer Chip
Download  14 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  DALLAS [Dallas Semiconductor]
Homepage  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1868 Datasheet(HTML) 3 Page - Dallas Semiconductor

  DS1868 Datasheet HTML 1Page - Dallas Semiconductor DS1868 Datasheet HTML 2Page - Dallas Semiconductor DS1868 Datasheet HTML 3Page - Dallas Semiconductor DS1868 Datasheet HTML 4Page - Dallas Semiconductor DS1868 Datasheet HTML 5Page - Dallas Semiconductor DS1868 Datasheet HTML 6Page - Dallas Semiconductor DS1868 Datasheet HTML 7Page - Dallas Semiconductor DS1868 Datasheet HTML 8Page - Dallas Semiconductor DS1868 Datasheet HTML 9Page - Dallas Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 3 / 14 page
background image
3 of 14
Transmission of data always begins with the stack select bit followed by the potentiometer-1 wiper
position value and lastly the potentiometer-0 wiper position value.
When wiper position data is to be written to the DS1868, 17 bits (or some integer multiple) of data should
always be transmitted. Transactions which do not send a complete 17 bits (or multiple) will leave the
register incomplete and possibly an error in the desired wiper positions.
After a communication transaction has been completed the RST signal input should be taken to a low
state to prevent any inadvertent changes to the device shift register. Once RST has reached a low state,
the contents of the I/O shift register are loaded into the respective multiplexers for setting wiper position.
A new wiper position will only engage after a RST transition to the inactive state. On device power-up,
wiper position will be random.
The potentiometers of the DS1868 can be connected in series as shown in Figure 3. This is referred to as
the stacked configuration and allows the user to double the total end-to-end resistance of the part. The
resolution of the combined potentiometers will remain the same as a single potentiometer but with a total
of 512 wiper positions available. Device resolution is defined as RTOT /256 (per potentiometer); where
RTOT equals the total potentiometer resistance.
The wiper output for the combined stacked potentiometer will be taken at the SOUT pin, which is the
multiplexed output of the wiper of potentiometer-0 (W0) or potentiometer-1 (W1). The potentiometer
wiper selected at the SOUT output is governed by the setting of the stack select bit (bit 0) of the 17-bit I/O
shift register. If the stack select bit has value 0, the multiplexed output, SOUT, will be that of the

Html Pages

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

Datasheet Download

Go To PDF Page

Link URL

Privacy Policy
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
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