X9271-2.7 INTERSIL [Intersil Corporation], X9271-2.7 Datasheet - Page 2

• Manufacturer Part Number: X9271-2.7
• Description: Single 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 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
comparators and detectors
circuit
Q-factor in filter circuits
conditioning circuits
circuits
circuits
HOLD
SCK
WP
SO
CS
A0
A1
SI
2
INTERFACE
CIRCUITRY
CONTROL
AND
V
V
CC
SS
DATA
Control
X9271
Bank 0
R
R
0
2
R
R
1
3
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
12 additional nonvolatile registers
3 Banks of 4 registers x 8-bits
REGISTER
Power-on Recall
COUNTER
Bank 1
R
R
communication systems
power amplifier in wireless systems
systems
wireless systems
systems
systems
systems
WIPER
0
2
(WCR)
R
R
1
3
Bank 2
R
R
0
2
R
R
1
3
Bank 3
R
R
50kΩ and 100kΩ
0
2
R
R
256-taps
1
3
R
R
R
L
W
H
March 31, 2005
FN8174.1