X9269 Xicor, X9269 Datasheet - Page 2

• Manufacturer Part Number: X9269
• Description: Dual Digitally-Controlled Potentiometers
• 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
X9269
DETAILED FUNCTIONAL DIAGRAM
REV 1.1.11 2/17/03
comparators and detectors
circuit
Q-factor in filter circuits
conditioning circuits
circuits
circuits
SDA
SCL
WP
A3
A2
A1
A0
INTERFACE
CIRCUITRY
CONTROL
AND
V
CC
V
SS
Data
8
www.xicor.com
R
R
Power On
Recall
R
R
Power On
Recall
0
2
0
2
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
R
R
R
R
1
3
1
3
communication systems
amplifier in wireless systems
systems
systems
systems
systems
systems
Register
Counter
Register
Counter
(WCR)
(WCR)
Wiper
Wiper
Resistor
Array
Pot 1
Pot 0
50KΩ and 100KΩ
Characteristics subject to change without notice.
256-taps
R
R
H0
L1
R
R
H1
L0
R
R
W0
W1
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