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X9421WS16I Datasheet(PDF) 3 Page - Intersil Corporation

Part # X9421WS16I
Description  Single Digitally Controlled (XDCP) Potentiometer
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

X9421WS16I Datasheet(HTML) 3 Page - Intersil Corporation

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3
FN8196.1
September 23, 2005
DETAILED FUNCTIONAL DIAGRAM
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
WIPER
COUNTER
REGISTER
(WCR)
RH/VH
RL/VL
DATA
RW/VW
INTERFACE
AND
CONTROL
CIRCUITRY
VCC
VSS
CS
SCK
A0
SO
SI
HOLD
WP
Control
64--taps
10k
Power-on Recall
DR0
DR1
DR2 DR3
X9421


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