X9260 INTERSIL [Intersil Corporation], X9260 Datasheet - Page 2

• Manufacturer Part Number: X9260
• Description: Dual Supply/Low Power/256-Tap/SPI bus
• Manufacturer: INTERSIL [Intersil Corporation]

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
• 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
comparators and detectors
amplifier circuit
Q-factor in filter circuits
conditioning circuits
circuits
circuits
HOLD
SCK
WP
CS
SO
A0
A1
SI
2
INTERFACE
CIRCUITRY
CONTROL
AND
V
V
CC
SS
Data
V
+
8
X9260
V-
R
R
R
R
Power-on
Recall
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
0
2
0
2
communication systems
power amplifier in wireless systems
systems
wireless systems
systems
systems
systems
R
R
R
R
1
3
1
3
Register
Counter
Register
Counter
(WCR)
(WCR)
Wiper
Wiper
50KΩ and 100KΩ
Resistor
Array
Pot 1
256-taps
Pot 0
R
R
L1
H0
R
R
H1
L0
R
R
W1
W0
February 28, 2005
FN8170.0