EEWORLDEEWORLDEEWORLD

Part Number

Search

X9271TB-2.7

Description
Single Digitally-Controlled (XDCP) Potentiometer
Categoryaccessories   
File Size404KB,23 Pages
ManufacturerXicon Passive Components
Websitehttp://www.xicor.com
Download Datasheet View All

X9271TB-2.7 Overview

Single Digitally-Controlled (XDCP) Potentiometer

A
PPLICATION
N
OTES AND
D
EVELOPMENT
S
YSTEM
A V A I L A B L E
AN99 • AN115 • AN124 •AN133 • AN134 • AN135
Single Supply / Low Power / 256-tap / SPI bus
X9271
Single Digitally-Controlled (XDCP
TM
) Potentiometer
FEATURES
• 256 Resistor Taps
• SPI Serial Interface for write, read, and transfer
operations of the potentiometer
• Wiper Resistance, 100
typical @ V
CC
= 5V
• 16 Nonvolatile Data Registers
• Nonvolatile Storage of Multiple Wiper Positions
• Power On Recall. Loads Saved Wiper Position on
Power Up.
• Standby Current < 3µA Max
• V
CC
: 2.7V to 5.5V Operation
• 50K
, 100K
versions of End to End Resistance
• 100 yr. Data Retention
• Endurance: 100,000 Data Changes per Bit per
Register
• 14-Lead TSSOP, 16-Lead CSP (Chip Scale
Package)
• Low Power CMOS
DESCRIPTION
The X9271 integrates a single digitally controlled
potentiometer (XDCP) on a monolithic CMOS
integrated circuit.
The digital controlled potentiometer is implemented
using 255 resistive elements in a series array. Between
each element are tap points connected to the wiper
terminal through switches. The position of the wiper on
the array is controlled by the user through the SPI bus
interface. The potentiometer has associated with it a
volatile Wiper Counter Register (WCR) and a four
nonvolatile Data Registers that can be directly written
to and read by the user. The contents of the WCR
controls the position of the wiper on the resistor array
though the switches. Powerup recalls the contents of
the default data register (DR0) to the WCR.
The XDCP can be used as a three-terminal
potentiometer or as a two terminal variable resistor in
a wide variety of applications including control,
parameter adjustments, and signal processing.
FUNCTIONAL DIAGRAM
V
CC
R
H
SPI
Bus
Interface
Address
Data
Status
Write
Read
Transfer
Inc/Dec
Bus
Interface
and Control
Control
Power On Recall
Wiper Counter
Register (WCR)
Data Registers
16 Bytes
50KΩ and 100KΩ
256-taps
POT
V
SS
R
W
R
L
REV 1.1.7 2/6/03
www.xicor.com
Characteristics subject to change without notice.
1 of 23
Why do clocks use 32.768K crystals?
[i=s]This post was last edited by fish001 on 2019-9-19 21:50[/i]In the electronics industry, the crystal oscillator frequency that customers and suppliers often hear is 32.768KHZ, 77.503KHZ, 60.003KHZ...
fish001 Microcontroller MCU
Problems and Solutions in TMS320F206 Simulation Debugging
[size=4]F206 has three independent storage spaces for program, data and I/O, each of which is 64K×16 bits, of which the on-chip dual-access RAM is 544 words (288 words for data, and the other 256 word...
fish001 Microcontroller MCU
DCDC input end inrush current problem
I recently used this DCDC circuit. When VIN is powered on, the impact current at the input end will range from a few A to tens of A, and the size varies with the resistance value of R1R2. I soldered t...
CcKk Power technology
Smart Home Series Articles | Battle for Control: Who is the control center of the smart home system?
By Mike Gilbert, Head of Personal Electronics Systems End Devices, Texas Instruments With the popularity of smart homes, more and more rooms are now equipped with smart speakers equipped with artifici...
alan000345 TI Technology Forum
EEWORLD University Hall----Live Replay: MCU programming is no longer difficult, use MPLAB? Code Configurator (MCC) to achieve rapid development
Live replay: MCU programming is no longer difficult, use MPLAB? Code Configurator (MCC) to achieve rapid development : https://training.eeworld.com.cn/course/5306...
hi5 Integrated technical exchanges

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2024 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号