X9514WV [XICOR]
PushPot⑩ Potentiometer (Push Button Controlled); PushPot ™电位（按钮控制）
| 型号： | X9514WV |
| 厂家： | 
XICOR INC. |
| 描述： | PushPot⑩ Potentiometer (Push Button Controlled) |
| 文件： | 总11页 (文件大小：59K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
APPLICATION NOTES
A V A I L A B L E
AN42 • AN44–50 • AN52 • AN53 • AN73
Terminal Voltage ±5V, 32 Taps, Log Taper
X9514
PushPot™ Potentiometer (Push Button Controlled)
FEATURES
DESCRIPTION
• Push Button Controlled
• Low Power CMOS
The Xicor X9514 is a push button controlled, logarithmic
taper potentiometer and is ideal for push button con-
trolled resistance trimming.
—Active Current, 3mA Max
—Standby Current, 200µA Max
• 31 Resistive Elements
The X9514 is a resistor array composed of 31 resistive
elements. Between each element and at either end are
tappointsaccessibletothewiperelement. Thepositionof
the wiper element is controlled by the PU and PD inputs.
—Temperature Compensated
—±20% End to End Resistance Range
— –5V to +5V Range
2
ThepositionofthewipercanbeautomaticallystoredinE
• 32 Wiper Tap Points
memory and then be recalled upon a subsequent power-
on operation.
—Logarithmic Taper
—Wiper Positioned via Two Push Button Inputs
—Slow & Fast Scan Modes
All Xicor nonvolatile products are designed and tested
for applications requiring extended endurance and data
retention.
®
—AUTOSTORE Option
—Manual Store Option
—Wiper Position Stored in Nonvolatile
Memory and Recalled on Power-Up
• 100 Year Wiper Position Data Retention
• X9514W = 10KΩ
• Packages
—8-Lead PDIP
—8-Lead SOIC
—14-Lead TSSOP
FUNCTIONAL DIAGRAM
5-BIT
PU
31
V
H
UP/DOWN
PD
COUNTER
30
29
28
5-BIT
EEPROM
MEMORY
ONE
OF
THIRTY-
TWO
TRANSFER
GATES
RESISTOR
ARRAY
DECODER
2
1
0
STORE AND
RECALL
CONTROL
CIRCUITRY
ASE
V
V
L
W
6487 ILL F01.1
AUTOSTORE is a registered trademark of Xicor, Inc.
E2POT™ and PushPot™ are trademarks of Xicor, Inc.
©Xicor, Inc. 1994, 1995, 1996 Patents Pending
6487-3.5 7/3/96 T5/C3/D2 NS
Characteristics subject to change without notice
1
X9514
PIN DESCRIPTIONS
PIN CONFIGURATION
V and V
H
L
DIP/SOIC
The high (V ) and low (V ) terminals of the X9514 are
H
L
PU
PD
1
2
3
4
8
7
6
5
V
equivalent to the fixed terminals of a mechanical potenti-
ometer. The minimum voltage is –5V and the maximum is
+5V. It should be noted that the terminology of V and V
CC
ASE
X9514
V
H
V
L
V
L
H
references the relative position of the terminal in relation
to wiper movement direction selected by the PU and PD
inputs and not the voltage potential on the terminal.
V
SS
W
TSSOP
PU
PU
PD
NC
NC
NC
1
2
3
4
5
6
7
14
13
12
11
10
9
V
CC
The debounced PU input is for incrementing the wiper
position. An on-chip pull-up holds the PU input HIGH. A
switch closure to ground or a LOW logic level will, after
a debounce time, move the wiper to the next adjacent
higher tap position.
ASE
NC
NC
NC
X9514
V
H
V
L
V
PD
V
8
SS
W
6487 ILL F02.2
The debounced PD input is for decrementing the wiper
position. An on-chip pull-up holds the PD input HIGH. A
switch closure to ground or a LOW logic level will, after
a debounce time, move the wiper to the next adjacent
lower tap position.
PIN NAMES
Symbol
Description
High Terminal
ASE
V
V
V
V
V
H
The debounced ASE (AUTOSTORE enable) pin can be
in one of two states:
Wiper Terminal
Low Terminal
Ground
W
L
V
IL
– AUTOSTORE is enabled. When V
powers-
CC
SS
CC
down an automatic store cycle takes place.
Supply Voltage
Push Up Input
Push Down Input
V
IH
– AUTOSTORE is disabled. A LOW to HIGH will
PU
initiate a manual store operation. This is for a user who
wishes to connect a push button switch to this pin. For
every valid push, the X9514 will store the current wiper
PD
ASE
NC
AUTOSTORE Enable Input
2
position to the E PROM.
No Connect
6487 PGM T01.2
Typical Attenuation Characteristics (dB)
0
-20
-40
-43.5
-60
24
16
31
28
20
8
4
12
0
TAP POSITION
6487 ILL F04
2
X9514
DEVICE OPERATION
making a continuous push, after the first second, the
increment/decrement speed increases. For the first
second the device will be in the slow scan mode. Then
if the button is held for longer than 1 second the device
will be in the fast scan mode. As soon as the button is
released the X9514 will return to a standby condition.
There are three sections of the X9514: the input control,
counteranddecodesection;theE PROMmemory;and
2
theresistorarray.Theinputcontrolsectionoperatesjust
like an up/down counter. The output of this counter is
decoded to turn on a single electronic switch connecting
a point on the resistor array to the wiper output. Under
the proper conditions the contents of the counter can be
The wiper, when at either fixed terminal, acts like its
mechanical equivalent and does not move beyond the
last position. That is, the counter does not wrap around
when clocked to either extreme.
2
stored in E PROM memory and retained for future use.
The resistor array is comprised of 31 individual resistors
connected in series. At either end of the array and
between each resistor is an electronic switch that trans-
fers the potential at that point to the wiper.
AUTOSTORE
2
The value of the counter is stored in E PROM memory
whenever the chip senses a powers-down of V while
CC
The X9514 is designed to interface directly to two push
button switches for effectively moving the wiper up or
down. The PU and PD inputs increment or decrement a
5-bit counter respectively. The output of this counter is
decoded to select one of the thirty-two wiper positions
along the resistive array. The wiper increment input, PU
and the wiper decrement input, PD are both connected
toaninternalpull-upsothattheynormallyremainHIGH.
When pulled LOW by an external push button switch or
a logic LOW level input, the wiper will be switched to the
next adjacent tap position.
ASE is enabled (held LOW). When power is restored,
the content of the memory is recalled and the counter
reset to the last value stored.
If AUTOSTORE is to be implemented, ASE is typically
hard wired to V . If ASE is held HIGH during power up
SS
and then taken LOW, the wiper will not respond to the
PU or PD inputs until ASE is brought HIGH and held
HIGH.
Manual (Push Button) Store
When ASE is not enabled (held HIGH) a push button
switch may be used to pull ASE LOW and released to
perform a manual store of the wiper position.
Internal debounce circuitry prevents inadvertent switch-
ing of the wiper position ifPU or PD remain LOW for less
than 40ms, typical. Each of the buttons can be pushed
eitheronceforasingleincrement/decrementorcontinu-
ously for a multiple increments/decrements. The num-
ber of increments/decrements of the wiper position
depend on how long the button is being pushed. When
R
TOTAL
with V Removed
CC
Theendtoendresistanceofthearraywillfluctuateonce
is removed.
V
CC
Typical circuit with ASE store pin controlled by
Typical circuit with ASE store pin used in
push button switch
AUTOSTORE mode
VCC
3.3µF
VCC
8
3
5
6
VCC
VH
VW
VL
8
4
VCC
VSS
1
2
7
PU
PD
ASE
1
2
7
3
5
6
PU
PD
ASE
VH
VW
VL
VSS
6487 ILL F05a
6487 ILL F05.2
3
X9514
ABSOLUTE MAXIMUM RATINGS*
*COMMENT
Temperature under Bias .................. –65°C to +135°C
Storage Temperature ....................... –65°C to +150°C
Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and the functional operation
of the device at these or any other conditions above
those listed in the operational sections of this specifica-
tion is not implied. Exposure to absolute maximum
ratingconditionsforextendedperiodsmayaffectdevice
reliability.
Voltage on PU, PD, ASE and V
CC
with Respect to V
........................... –1V to +7V
SS
Voltage on V and V Referenced to V
H
L
SS
∆V = |V –V |......................................................... 10V
H
L
Lead Temperature (Soldering 10 seconds)....... 300°C
Wiper Current ..................................................... ±1mA
ANALOG CHARACTERISTICS
Electrical Characteristics
Temperature Coefficient
End-to-End Resistance Tolerance ..................... ±20%
Power Rating at 25°C
X9514W ...................................................... 10mW
Wiper Current ............................................ ±1mA Max.
Typical Wiper Resistance......................... 40Ω at 1mA
Typical Noise..........................< –120dB/ Hz Ref: 1V
(–40°C to +85°C)
X9514W .....................................+600 ppm/°C Typical
Ratiometric Temperature Coefficient ............ ±20 ppm
Wiper Adjustability
Unlimited Wiper Adjustment (Non-Store operation)
Wiper Position Store Operations ............. 100,000
Data Changes
Relative Variation
Relative variation is a measure of the error in step size
Physical Characteristics
between taps = log(V
for tap n = 2 – 31
) – log(V
w(n)
) = 0.08±0.05
w(n-1)
Marking Includes
Manufacturer’s Trademark
Resistance Value or Code
Date Code
Typical Electrical Taper
100.0%
90.0%
80.0%
70.0%
60.0%
50.0%
40.0%
30.0%
20.0%
10.0%
0.0%
Tap
6487 ILL F08
4
X9514
RECOMMENDED OPERATING CONDITIONS
Temperature
Min.
Max.
Supply Voltage
Limits
Commercial
Industrial
Military
0°C
+70°C
+85°C
+125°C
X9514
5V ±10%
6487 PGM T04.1
–40°C
–55°C
6487 PGM T03.1
D.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified.)
Limits
(4)
Symbol
Parameter
Min.
Typ.
Max.
3
Units
mA
µA
Test Conditions
PU or PD held at V the others at V
I
I
I
V
CC
Active Current
1
CC
SB
LI
IL
IH
Standby Supply Current
200
10
PU = PD = V
H
ASE, PU, PD Input
µA
V = V to V
IN SS CC
Leakage Current
V
V
ASE, PU, PD Input
HIGH Voltage
2
V
+ 1
V
V
IH
CC
ASE, PU, PD Input
–1
0.8
IL
LOW Voltage
R
Wiper Resistance
40
100
+5
Ω
V
Max. Wiper Current ±1mA
W
V
V
VH Terminal Voltage
VL Terminal Voltage
–5
–5
VH
+5
V
VL
(5)
C
IN
ASE, PU, PD Input
10
pF
V = 5V, V = 0V,
CC IN
Capacitance
T = 25°C, f = 1MHz
A
6487 PGM T05.4
STANDARD PARTS
Part Number
X9514W
Maximum Resistance
Wiper Increments
Minimum Resistance
10KΩ
Log Taper
40Ω
6487 PGM T08.1
Notes: (4) Typical values are for T = 25°C and nominal supply voltage.
A
(5) This parameter is periodically sampled and not 100% tested.
SYMBOL TABLE
WAVEFORM
INPUTS
OUTPUTS
Must be
steady
Will be
steady
May change
from LOW
to HIGH
Will change
from LOW
to HIGH
May change
from HIGH
to LOW
Will change
from HIGH
to LOW
Don’t Care:
Changes
Allowed
Changing:
State Not
Known
N/A
Center Line
is High
Impedance
5
X9514
A.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified)
Limits
(6)
Typ.
Symbol
Parameter
Min.
Max.
Units
t
t
t
t
t
Time Between Two Separate Push Button Events
Debounce Time
0
µs
ms
GAP
60
375
75
DB
After Debounce to Wiper Change on a Slow Mode
Wiper Change on a Scan Mode
Power Up to Wiper Stable
100
25
250
50
ms
S SLOW
(7)
ms
S FAST
(7)
500
50
µs
PU
(7)
t V
R
V Power-up Rate
CC
0.2
2
mV/µs
ms
cc
(7)
t
AUTOSTORE Cycle Time
ASTO
(7)
V
V
AUTOSTORE Threshold Voltage
AUTOSTORE Cycle End Voltage
4
V
ASTH
(7)
3.5
V
ASEND
6487 PGM T07.3
AUTOSTORE Cycle Timing Diagram
V
5
CC
V
ASTH
AUTOSTORE CYCLE IN PROGRESS
V
ASEND
t
ASTO
STORE TIME
TIME (ms)
6487 ILL F03.2
Notes: V
– AUTOSTORE threshold voltage
ASTH
V
– AUTOSTORE cycle end voltage
ASEND
t
– AUTOSTORE cycle time
ASTO
(6) Typical values are for T = 25°C and nominal supply voltage.
A
(7) This parameter is periodically sampled and not 100% tested.
6
X9514
Slow Mode Timing
t
t
GAP
DB
PU
(1)
MI
V
W
6487 ILL F06.1
Notes: (1) MI in the A.C. timing diagram refers to the minimum incremental change in the wiper voltage.
Fast Mode Timing
t
DB
PU
t
S FAST
t
S SLOW
(1)
V
MI
W
1 Second
6487 ILL F07
Notes: (1) MI in the A.C. timing diagram refers to the minimum incremental change in the wiper voltage.
7
X9514
PACKAGING INFORMATION
8-LEAD PLASTIC DUAL IN-LINE PACKAGE TYPE P
0.430 (10.92)
0.360 (9.14)
0.260 (6.60)
0.240 (6.10)
PIN 1 INDEX
PIN 1
0.060 (1.52)
0.020 (0.51)
0.300
(7.62) REF.
HALF SHOULDER WIDTH ON
ALL END PINS OPTIONAL
0.145 (3.68)
0.128 (3.25)
SEATING
PLANE
0.025 (0.64)
0.015 (0.38)
0.150 (3.81)
0.125 (3.18)
0.065 (1.65)
0.045 (1.14)
0.110 (2.79)
0.090 (2.29)
0.020 (0.51)
0.016 (0.41)
0.325 (8.25)
0.300 (7.62)
0.015 (0.38)
MAX.
0°
15°
TYP. 0.010 (0.25)
NOTE:
1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
2. PACKAGE DIMENSIONS EXCLUDE MOLDING FLASH
3926 FHD F01
8
X9514
PACKAGING INFORMATION
8-LEAD PLASTIC SMALL OUTLINE GULL WING PACKAGE TYPE S
0.150 (3.80)
0.158 (4.00)
0.228 (5.80)
0.244 (6.20)
PIN 1 INDEX
PIN 1
0.014 (0.35)
0.019 (0.49)
0.188 (4.78)
0.197 (5.00)
(4X) 7°
0.053 (1.35)
0.069 (1.75)
0.004 (0.19)
0.010 (0.25)
0.050 (1.27)
0.010 (0.25)
0.050" TYPICAL
X 45°
0.020 (0.50)
0.050"
TYPICAL
0° – 8°
0.0075 (0.19)
0.010 (0.25)
0.250"
0.016 (0.410)
0.037 (0.937)
0.030"
TYPICAL
8 PLACES
FOOTPRINT
NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
3926 FHD F22.1
9
X9514
PACKAGING INFORMATION
14-LEAD PLASTIC, TSSOP PACKAGE TYPE V
.025 (.65) BSC
.169 (4.3)
.252 (6.4) BSC
.177 (4.5)
.193 (4.9)
.200 (5.1)
.047 (1.20)
.0075 (.19)
.002 (.05)
.0118 (.30)
.006 (.15)
.010 (.25)
Gage Plane
0° – 8°
Seating Plane
.019 (.50)
.029 (.75)
Detail A (20X)
.031 (.80)
.041 (1.05)
See Detail “A”
NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
3926 FHD F32
10
X9514
ORDERING INFORMATION
X9514X
X
X
Temperature Range
Blank = Commercial = 0°C to +70°C
I = Industrial = –40°C to +85°C
M = Military = –55°C to +125°C
Package
P = 8-Lead Plastic DIP
S = 8-Lead SOIC
V = 14-Lead TSSOP
End to End Resistance
W = 10KΩ
LIMITED WARRANTY
Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, Inc. makes no warranty,
express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement.
Xicor, Inc. makes no warranty of merchantability or fitness for any purpose. Xicor, Inc. reserves the right to discontinue production and change specifications and
prices at any time and without notice.
Xicor, Inc. assumes no responsibility for the use of any circuitry other than circuitry embodied in a Xicor, Inc. product. No other circuits, patents, licenses are
implied.
U.S. PATENTS
Xicor products are covered by one or more of the following U.S. Patents: 4,263,664; 4,274,012; 4,300,212; 4,314,265; 4,326,134; 4,393,481; 4,404,475;
4,450,402; 4,486,769; 4,488,060; 4,520,461; 4,533,846; 4,599,706; 4,617,652; 4,668,932; 4,752,912; 4,829, 482; 4,874, 967; 4,883, 976. Foreign patents and
additional patents pending.
LIFE RELATED POLICY
In situations where semiconductor component failure may endanger life, system designers using this product should design the system with appropriate error
detection and correction, redundancy and back-up features to prevent such an occurence.
Xicor’s products are not authorized for use in critical components in life support devices or systems.
1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose
failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant
injury to the user.
2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or effectiveness.
11
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