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X9015 Datasheet, PDF (1/11 Pages) Xicor Inc. – Digitally-Controlled Potentiometer
Low Noise, Low Power
X9015
Digitally-Controlled Potentiometer
FEATURES
• 32 Taps
• Three-wire Up/Down Serial Interface
• VCC = 2.7V & 5V
• Operating ICC = 50µA Max.
• Standby current = 1µA Max.
• RTOTAL = 50KΩ
• Packages, SOIC-8
DESCRIPTION
The Xicor X9015 is a 32 tap potentiometer that is volatile.
The device consists of a string of 31 resistors that can be
programmed to connect the RW/VW wiper output with
any of the nodes between the connecting resistors. The
connection point of the wiper is determined by
information communicated to the device on the 3-wire
port. The 3-wire port changes the tap position by a falling
edge on the increment pin. Direction the wiper moves is
determined by the state of the Up/Down pin. The wiper
position at power up is tap #15.
The X9015 can be used in a wide variety of applications
that require a digitally controlled variable resistor to set
analog values.
FUNCTIONAL DIAGRAMS
VCC (Supply Voltage)
UP/DOWN
(U/D)
INCREMENT
(INC)
DEVICE SELECT
(CS)
CONTROL
VSS (Ground)
GENERAL
U/D
INC
CS
RH/VH
RW/VW
RL/VL
VCC
VSS
5-BIT
UP/DOWN
COUNTER
CONTROL
CIRCUITRY
31
30
29
28
ONE
OF
THIRTY TWO
DECODER
2
1
0
TRANSFER
GATES
RESISTOR
ARRAY
DETAILED
RH/VH
RL/VL
RW/VW
9900-2009.3 9/20/99 PS
1
Characteristics subject to change without notice