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參數資料
| 型號： | X9221AUPZ |
| 廠商： | INTERSIL CORP |
| 元件分類： | 數字電位計 |
| 英文描述： | 64 Taps, 2-Wire Serial Bus |
| 中文描述： | DUAL 50K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 64 POSITIONS, PDIP20 |
| 封裝： | ROHS COMPLIANT, PLASTIC, DIP-20 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 259K |
| 代理商： | X9221AUPZ |
1
X9221A
64 Taps, 2-Wire Serial Bus
Dual Digitally Controlled Potentiometer
(XDCP)
FEATURES
Two XDCPs in one package
2-wire serial interface
Register oriented format, 8 registers total
—Directly write wiper position
—Read wiper position
—Store as many as four positions per pot
Instruction format
—Quick transfer of register contents to resistor
array
Direct write cell
—Endurance–100,000 writes per bit per register
Resistor array values
—2k
, 10k
, 50k
Resolution: 64 taps each pot
20 Ld plastic DIP and 20-lead SOIC packages
Pb-free plus anneal available (RoHS compliant)
DESCRIPTION
The X9221A integrates two digitally controlled potenti-
ometers (XDCP) on a monolithic CMOS integrated
microcircuit.
The digitally controlled potentiometer is implemented
using 63 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 2-wire
bus interface. Each potentiometer has associated with
it a volatile Wiper Counter Register (WCR) and 2 non-
volatile Data Registers (DR0:DR1) 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 through the switches. Power up recalls the con-
tents of DR0 to the WCR.
The XDCP can be used as a three-terminal potentiom-
eter or as a two-terminal variable resistor in a wide
variety of applications including control, parameter
adjustments, and signal processing.
BLOCK DIAGRAM
R1
R0
R3
R2
V
H0
/R
H0
V
L0
/R
L0
V
W0
/R
W0
Wiper
Counter
Register
(WCR)
Register
Array
Pot 1
Wiper
Counter
Register
(WCR)
R1
R0
R3
R2
8
Data
SCL
SDA
A0
A1
A2
A3
Interface
and
Control
Circuitry
V
CC
V
SS
Pot 0
V
H1
/R
H1
V
L1
/R
L1
V
W1
/R
W1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
Intersil (and design) is a registered trademark of Intersil Americas Inc.
XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
Data Sheet
FN8163.1
September 14, 2005
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