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X9429_08 Datasheet, PDF (3/20 Pages) Intersil Corporation – Single Digitally Controlled Potentiometer(XDCP™) | |||
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Detailed Functional Diagram
VCC
SCL
SDA
A3
A2
A0
WP
CONTROL
INTERFACE
AND
CONTROL
CIRCUITRY
D ATA
X9429
POWER-ON RECALL
DR0 DR1
WIPER
COUNTER
REGISTER
DR2 DR3 (WCR)
10kΩ
64--TAPS
RH/VH
RL/VL
RW/VW
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
3
FN8248.3
October 13, 2008
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