Controlled Potentiometer. X9111 Datasheet

X9111 Datasheet PDF, Equivalent


Part Number

X9111

Description

Single Digitally Controlled Potentiometer

Manufacture

Intersil

Total Page 17 Pages
PDF Download
Download X9111 Datasheet


X9111 Datasheet
®
Data Sheet
X9111
Single Supply/Low Power/1024-Tap/SPI Bus
September 15, 2006
FN8159.4
Single Digitally-Controlled (XDCP™)
Potentiometer
The X9111 integrates a single digitally controlled
potentiometer (XDCP) on a monolithic CMOS integrated
circuit.
The digital controlled potentiometer is implemented using
1023 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 four non-volatile 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
VCC
Features
• 1024 Resistor Taps – 10-Bit Resolution
• SPI Serial Interface for Write, Read, And Transfer
Operations Of The Potentiometer
• Wiper Resistance, 40Typical @ 5V
• Four Non-Volatile Data Registers
• Non-Volatile Storage of Multiple Wiper Positions
• Power On Recall. Loads Saved Wiper Position on
Power-Up.
• Standby Current <3µA Max
• VCC: 2.7V to 5.5V Operation
• 100kEnd to End Resistance
• 100 yr. Data Retention
• Endurance: 100,000 Data Changes Per Bit Per Register
• 14 Ld TSSOP
• Low Power CMOS
• Single Supply Version of the X9110
• Pb-Free Plus Anneal Available (RoHS Compliant)
Pinout
SO
A0
NC
CS
SCK
SI
VSS
TSSOP
1 14
2 13
3 12
4 X9111 11
5 10
69
78
VCC
RL
RH
RW
HOLD
A1
WP
RH
SPI
Bus
Interface
Address
Data
Status
Bus
Interface &
Control
Write
Read
Transfer
Control
Power On Recall
Wiper Counter
Register (WCR)
Data Registers
(DR0-DR3)
Wiper
100k
1024-taps
POT
VSS
NC RW RL
1 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.
Copyright Intersil Americas Inc. 2005, 2006. All Rights Reserved
XDCP is a trademark of Intersil Americas Inc. All other trademarks mentioned are the property of their respective owners.

X9111 Datasheet
X9111
Ordering Information
PART NUMBER
X9111TV14I
X9111TV14IZ (Note)
X9111TV14
X9111TV14Z (Note)
X9111TV14-2.7
POTENTIOMETER
PART MARKING VCC LIMITS (V) ORGANIZATION (k) TEMP RANGE (°C)
PACKAGE
X9111TV I
5 ±10%
100
-40 to +85
14 Ld TSSOP (4.4mm)
X9111TV ZI
-40 to +85
14 Ld TSSOP (4.4mm) (Pb-free)
X9111TV
0 to +70
14 Ld TSSOP (4.4mm)
X9111TV Z
0 to +70
14 Ld TSSOP (4.4mm) (Pb-free)
X9111TV F
2.7 to 5.5
0 to +70
14 Ld TSSOP (4.4mm)
X9111TV14Z-2.7 (Note) X9111TV ZF
0 to +70
14 Ld TSSOP (4.4mm) (Pb-free)
X9111TV14I-2.7*
X9111TV G
-40 to +85
14 Ld TSSOP (4.4mm)
X9111TV14IZ-2.7* (Note) X9111TV ZG
-40 to +85
14 Ld TSSOP (4.4mm) (Pb-free)
*Add "T1" suffix for tape and reel.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are
MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
Detailed Functional Diagram
VCC
HOLD
CS
SCK
SO
SI
A0
A1
WP
Interface
and
Control
Circuitry
Data
Control
Power On
Recall
DR0 DR1
DR2 DR3
Wiper
Counter
Register
(WCR)
100k
1024-taps
RH
RL
RW
VSS
Circuit Level Applications
• Vary the gain of a voltage amplifier
• Provide programmable dc reference voltages for
comparators and detectors
• Control the volume in audio circuits
• Trim out the offset voltage error in a voltage amplifier
circuit
• Set the output voltage of a voltage regulator
• Trim the resistance in Wheatstone bridge circuits
• Control the gain, characteristic frequency and
Q-factor in filter circuits
• Set the scale factor and zero point in sensor signal
conditioning circuits
• Vary the frequency and duty cycle of timer ICs
• Vary the dc biasing of a pin diode attenuator in RF circuits
• Provide a control variable (I, V, or R) in feedback circuits
2
System Level Applications
• Adjust the contrast in LCD displays
• Control the power level of LED transmitters in
communication systems
• Set and regulate the DC biasing point in an RF power
amplifier in wireless systems
• Control the gain in audio and home entertainment systems
• Provide the variable DC bias for tuners in RF wireless
systems
• Set the operating points in temperature control systems
• Control the operating point for sensors in industrial
systems
• Trim offset and gain errors in artificial intelligent systems
FN8159.4
September 15, 2006


Features Datasheet pdf ® Data Sheet X9111 Single Supply/Low P ower/1024-Tap/SPI Bus September 15, 20 06 FN8159.4 Single Digitally-Controll ed (XDCP™) Potentiometer The X9111 in tegrates a single digitally controlled potentiometer (XDCP) on a monolithic CM OS integrated circuit. The digital cont rolled potentiometer is implemented usi ng 1023 resistive elements in a series array. Between each element are tap poi nts connected to the wiper terminal thr ough switches. The position of the wipe r on the array is controlled by the use r through the SPI bus interface. The po tentiometer has associated with it a vo latile Wiper Counter Register (WCR) and four non-volatile Data Registers that can be directly written to and read by the user. The contents of the WCR contr ols the position of the wiper on the re sistor array though the switches. Power up recalls the contents of the default data register (DR0) to the WCR. The XDC P can be used as a three-terminal poten tiometer or as a two terminal variable resistor in a wide variety .
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