X9015US XICOR [Xicor Inc.], X9015US Datasheet

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X9015US

Manufacturer Part Number
X9015US
Description
Digitally-Controlled Potentiometer
Manufacturer
XICOR [Xicor Inc.]
Datasheet

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FUNCTIONAL DIAGRAMS
Low Noise, Low Power
FEATURES
• 32 Taps
• Three-wire Up/Down Serial Interface
• V
• Operating I
• Standby current = 1µA Max.
• R
• Packages, SOIC-8
9900-2009.3 9/20/99 PS
DEVICE SELECT
CC
INCREMENT
TOTAL
UP/DOWN
= 2.7V & 5V
(U/D)
(INC)
(CS)
= 50K
V
CC
CC
V
CONTROL
(Supply Voltage)
GENERAL
SS
= 50µA Max.
(Ground)
Digitally-Controlled Potentiometer
R
R
R
H
W
L
/V
/V
/V
L
H
W
V
V
U/D
INC
CC
SS
CS
X9015
CIRCUITRY
COUNTER
UP/DOWN
CONTR OL
5-BIT
1
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 R
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.
THIRTY TWO
DECODER
ONE
OF
DETAILED
31
30
29
28
2
1
0
Characteristics subject to change without notice
TRANSFER
GATES
W
/V
W
wiper output with
RESISTOR
ARRAY
R
R
R
H
L
W
/V
/V
/V
L
H
W

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X9015US Summary of contents

Page 1

Low Noise, Low Power Digitally-Controlled Potentiometer FEATURES • 32 Taps • Three-wire Up/Down Serial Interface • 2.7V & • Operating I = 50µA Max. CC • Standby current = 1µA Max. • 50K TOTAL ...

Page 2

X9015 PIN DESCRIPTIONS R /V and The high ( and low ( X9015 are equivalent to the fixed terminals of a mechanical potentiometer. The minimum voltage is V and ...

Page 3

X9015 PRINCIPLES OF OPERATION There are two sections of the X9015: the input control, counter and decode section; and the resistor array. The input control section operates just like an up/down counter. The output of this counter is decoded to ...

Page 4

X9015 ABSOLUTE MAXIMUM RATINGS* Temperature under Bias .........................– +135 C Storage Temperature..............................–65°C to +150°C Voltage on CS, INC, U/ and with Respect to V .................................. – ...

Page 5

X9015 D.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified.) Symbol Parameter I V Active Current CC1 CC (Increment) I Standby Supply Current SB I CS, INC, U/D Input LI Leakage Current V CS, INC, U/D Input IH HIGH ...

Page 6

X9015 A.C. CONDITIONS OF TEST Input Pulse Levels Input Rise and Fall Times Input Reference Levels A.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified) Symbol Parameter INC Setup Cl t INC HIGH to U/D Change ...

Page 7

X9015 PERFORMANCE CHARACTERISTICS (TYPICAL) TYPICAL NOISE 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 0 10 TYPICAL RTOTAL vs. TEMPERATURE 10000 9800 9600 9400 9200 9000 8800 8600 8400 8200 8000 -55 ...

Page 8

X9015 TYPICAL WIPER RESISTANCE 800 700 600 500 400 300 200 100 0 0 TYPICAL ABSOLUTE % ERROR PER TAP POSITION 40.0% 30.0% 20.0% 10.0% 0.0% -10.0% -20.0% -30.0% -40.0% TYPICAL RELATIVE % ERROR PER TAP POSITION 20.0% 15.0% 10.0% ...

Page 9

X9015 APPLICATIONS INFORMATION Electronic digitally-controlled (XDCP) potentiometers provide two powerful application advantages; (1) the variability and reliability of a solid-state potentiometer, and (2) the flexibility of computer-based digital controls. Basic Configurations of Electronic Potentiometers ...

Page 10

X9015 SOIC PACKAGING INFORMATION 8-LEAD PLASTIC SMALL OUTLINE GULL WING PACKAGE TYPE S PIN 1 INDEX 0.010 (0.25) 0.020 (0.50) 0 – 8 0.016 (0.410) 0.037 (0.937) NOTE: ALL DIMENSIONS IN INCHES (IN P ARENTHESES IN MILLIMETERS) PIN 1 0.014 ...

Page 11

X9015 ORDERING INFORMATION X9015 Physical Characteristics Marking Includes Manufacturer’s Trademark Resistance Value or Code Date Code LIMITED WARRANTY Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, ...

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