X9421 Xicor, X9421 Datasheet - Page 2

• Manufacturer Part Number: X9421
• Description: Single Digitally Controlled (XDCP) Potentiometer
• Manufacturer: Xicor

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
X9421
DETAILED FUNCTIONAL DIAGRAM
REV 1.1.6 8/1/02
comparators and detectors
circuit
Q-factor in filter circuits
conditioning circuits
circuits
circuits
HOLD
SCK
WP
CS
SO
A0
SI
INTERF
CIRCUITR
CONTROL
AND
V
CC
V
A CE
SS
Y
Control
DATA
www.xicor.com
DR0 DR1
DR2 DR3
REGISTER
COUNTER
Power On Recall
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
• Control the gain in audio and home entertainment
• Provide the variable DC bias for tuners in RF
• Set the operating points in temperature control
• Control the operating point for sensors in industrial
• Trim offset and gain errors in artificial intelligent
WIPER
(WCR)
communication systems
power amplifier in wireless systems
systems
wireless systems
systems
systems
systems
Characteristics subject to change without notice.
10K
64--taps
R
R
R
W
H
L
/V
/V
/V
H
L
W
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