X9279 Xicor, X9279 Datasheet - Page 2

• Manufacturer Part Number: X9279
• Description: Single Digitally-Controlled (XDCP) Potentiometer
• Manufacturer: Xicor

X9279
DETAILED FUNCTIONAL DIAGRAM
CIRCUIT LEVEL APPLICATIONS
• Vary the gain of a voltage amplifier
• Provide programmable dc reference voltages for
• Control the volume in audio circuits
• Trim out the offset voltage error in a voltage amplifier
• Set the output voltage of a voltage regulator
• Trim the resistance in Wheatstone bridge circuits
• Control the gain, characteristic frequency and
• Set the scale factor and zero point in sensor signal
• Vary the frequency and duty cycle of timer ICs
• Vary the dc biasing of a pin diode attenuator in RF
• Provide a control variable (I, V, or R) in feedback
REV 1.1.7 2/6/03
comparators and detectors
circuit
Q-factor in filter circuits
conditioning circuits
circuits
circuits
SDA
SCL
WP
A2
A1
A0
INTERFACE
CIRCUITRY
CONTROL
AND
V
V
CC
SS
DATA
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Control
DR0 DR1
DR2 DR3
Bank 0
SYSTEM LEVEL APPLICATIONS
• Adjust the contrast in LCD displays
• Control the power level of LED transmitters in
• Set and regulate the DC biasing point in an RF power
• Control the gain in audio and home entertainment
• Provide the variable DC bias for tuners in RF wireless
• Set the operating points in temperature control
• Control the operating point for sensors in industrial
• Trim offset and gain errors in artificial intelligent
communication systems
amplifier in wireless systems
systems
systems
systems
systems
systems
DR0 DR1
DR2 DR3
12 additional nonvolatile registers
REGISTER
COUNTER
Bank 1
Power On Recall
3 Banks of 4 registers x 8-bits
WIPER
(WCR)
DR0 DR1
DR2 DR3
Bank 2
Characteristics subject to change without notice.
DR0 DR1
DR2 DR3
Bank 3
50KΩ and 100KΩ
256-taps
R
R
R
H
L
W
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