Digitally-Controlled Potentiometer. X9119 Datasheet

X9119 Datasheet PDF, Equivalent


Part Number

X9119

Description

Single Digitally-Controlled Potentiometer

Manufacture

Xicor

Total Page 23 Pages
PDF Download
Download X9119 Datasheet PDF


X9119 Datasheet
APPLICATION NOTES AND DEVELOPMENT SYSTEM
AVAILABLE
AN99 • AN115 • AN124 •AN133 • AN134 • AN135
Single Supply / Low Power / 1024-tap / 2-Wire bus
Preliminary Information
X9119
Single Digitally-Controlled (XDCP) Potentiometer
FEATURES
• 1024 Resistor Taps – 10-Bit Resolution
• 2-Wire Serial Interface for write, read, and
transfer operations of the potentiometer
• Wiper Resistance, 40Typical @ VCC = 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-Lead TSSOP, 15-Lead XBGA
• Low Power CMOS
• Single Supply version of the X9118
DESCRIPTION
The X9119 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
2-wire bus interface. The potentiometer has associated
with it a volatile Wiper Counter Register (WCR) and a
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
RH
2-Wire
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 NC
RW RL
REV 1.1.11 3/12/02
www.xicor.com
Characteristics subject to change without notice. 1 of 22

X9119 Datasheet
X9119 – Preliminary Information
DETAILED FUNCTIONAL DIAGRAM
VCC
SCL
SDA
A2
A1
A0
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
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
REV 1.1.11 3/12/02
www.xicor.com
Characteristics subject to change without notice. 2 of 22


Features Datasheet pdf APPLICATION NOTES AND DEVELOPMENT SYSTEM A V A I L A B L E AN99 • AN115 • A N124 •AN133 • AN134 • AN135 Sing le Supply / Low Power / 1024-tap / 2-Wi re bus Preliminary Information X9119 Single Digitally-Controlled (XDCP™) Potentiometer FEATURES • 1024 Resisto r Taps – 10-Bit Resolution • 2-Wire Serial Interface for write, read, and transfer operations of the potentiomete r • Wiper Resistance, 40Ω Typical @ VCC = 5V • Four Non-Volatile Data Re gisters • Non-Volatile Storage of Mul tiple Wiper Positions • Power On Reca ll. Loads Saved Wiper Position on Power Up. • Standby Current < 3µA Max • VCC: 2.7V to 5.5V Operation • 100K End to End Resistance • 100 yr. Dat a Retention • Endurance: 100,000 Data Changes Per Bit Per Register • 14-Le ad TSSOP, 15-Lead XBGA • Low Power CM OS • Single Supply version of the X91 18 DESCRIPTION The X9119 integrates a s ingle digitally controlled potentiomete r (XDCP) on a monolithic CMOS integrated circuit. The digital controlled potentiometer is implemented using 10.
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