1
X9511
Terminal Voltage 5V, 32 Taps
Single Digitally-Controlled (XDCPTM)
Potentiometer (Push Button Controlled)
FEATURES
Push button controlled
Low power CMOS
--Active current, 3mA max
--Standby current, 200A max
31 resistive elements
--Temperature compensated
--
20% end to end resistance range
---5V to +5V range
32 wiper tap points
--Wiper positioned via two push button inputs
--Slow & fast scan modes
--AUTOSTORE
option
--Manual store option
--Wiper position stored in nonvolatile memory
and recalled on power-up
100 year wiper position data retention
X9511W = 10k
Packages
--8 Ld PDIP
--8 Ld SOIC
Pb-free plus anneal available (RoHS compliant)
DESCRIPTION
The Intersil X9511 is a push button controlled potenti-
ometer that is ideal for push button controlled resis-
tance trimming.
The X9511 is a resistor array composed of 31 resistive
elements. Between each element and at either end
are tap points accessible to the wiper element. The
position of the wiper element is controlled by the PU
and PD inputs. The position of the wiper can be auto-
matically stored in E
2
memory and then be recalled
upon a subsequent power-on operation.
The resolution of the X9511 is equal to the maximum
resistance value divided by 31. As an example, for the
X9511W (10k
) each tap point represents 323
.
All Intersil nonvolatile products are designed and
tested for applications requiring extended endurance
and data retention.
ORDERING INFORMATION
PART NUMBER
PART MARKING
R
TOTAL
(k
)
TEMPERATURE
RANGE (C)
PACKAGE
X9511WP
X9511WP
10
0 to 70
8 Ld PDIP
X9511WPI
X9511WP I
-40 to 85
8 Ld PDIP
X9511WPIZ (Note)
X9511WP Z I
-40 to 85
8 Ld PDIP (Pb-free)
X9511WS*
X9511W
0 to 70
8 Ld SOIC
X9511WSZ* (Note)
X9511W Z
0 to 70
8 Ld SOIC (Pb-free)
X9511WSI*
X9511W I
-40 to 85
8 Ld SOIC
X9511WSIZ* (Note)
X9511W Z I
-40 to 85
8 Ld SOIC (Pb-free)
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are
MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
*Add "T1" suffix for tape and reel.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
Data Sheet
FN8205.1
September 6, 2005
2
FN8205.1
September 6, 2005
BLOCK DIAGRAM
5-Bit
Up/Down
Counter
5-Bit
EEPROM
Memory
Store and
Recall
Control
Circuitry
One
of
Thirty-Two
Decoder
Resistor
Array
V
H
PU
Transfer
Gates
ASE
V
L
V
W
0
1
2
28
29
30
31
PD
X9511
3
FN8205.1
September 6, 2005
PIN DESCRIPTIONS
V
H
/R
H
and V
L
/R
L
The high (VH/RH) and low (VL/RL) terminals of the
X9511 are equivalent to the fixed terminals of a
mechanical potentiometer. The minimum voltage is -5V
and the maximum is +5V. It should be noted that the
terminology of VL/RL and VH/RH reference 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.
PU
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.
PD
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.
ASE
The debounced ASE (AUTOSTORE enable) pin can
be in one of two states:
V
IL
- AUTOSTORE is enabled. When V
CC
powers
down, an automatic store cycle takes place.
V
IH
- AUTOSTORE is disabled. A LOW to HIGH will
initiate a manual store operation. This is for the user
who wishes to connect a push button switch to this pin.
For every valid push, the X9511 will store the current
wiper position to the EEPROM.
PIN CONFIGURATION
PIN NAMES
DEVICE OPERATION
There are three sections of the X9511: the input control,
counter and decode section; the EEPROM memory;
and the resistor array. The input control section oper-
ates just 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 out-
put. Under the proper conditions the contents of the
counter can be stored in EEPROM 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 elec-
tronic switch that transfers the potential at that point to
the wiper.
The X9511 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 dec-
rement 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 incre-
ment input, PU and the wiper decrement input, PD are
both connected to an internal pull-up so that they nor-
mally remain HIGH. 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 posi-
tion.
Internal debounce circuitry prevents inadvertent
switching of the wiper position if PU or PD remain
LOW for less than 40ms, typical. Each of the buttons
can be pushed either once for a single increment/dec-
rement or continuously for a multiple increments/dec-
rements. The number of increments/decrements of the
wiper position depend on how long the button is being
pushed. When 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 go into the fast scan
mode. As soon as the button is released the X9511
will return to a standby condition.
V
H
V
CC
PU
PD
1
2
3
4
8
7
6
5
X9511
DIP/SOIC
V
SS
ASE
V
L
V
W
Symbol
Description
V
H
/R
H
High Terminal
V
W
/R
W
Wiper Terminal
V
L
/R
L
Low Terminal
V
SS
Ground
V
CC
Supply Voltage
PU
Push Up Input
PD
Push Down Input
ASE
AUTOSTORE Enable Input
X9511
4
FN8205.1
September 6, 2005
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.
AUTOSTORE
The value of the counter is stored in EEPROM mem-
ory whenever the chip senses a power-down of V
CC
while 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
SS
. If ASE is held HIGH during power-
up 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.
R
TOTAL
with V
CC
Removed
The end to end resistance of the array will fluctuate
once V
CC
is removed.
Figure 1. Typical circuit with ASE store pin
controlled by push button switch
Figure 2. Typical circuit with ASE store pin used in
AUTOSTORE mode
3
5
6
8
1
2
7
V
CC
2k
V
CC
PU
PD
ASE
V
H
V
W
V
L
V
SS
4
3
5
8
1
2
7
V
CC
V
CC
PU
PD
ASE
V
SS
V
H
V
W
V
L
3.3F
6
X9511
5
FN8205.1
September 6, 2005
ABSOLUTE MAXIMUM RATINGS
Temperature under bias .................... -65
C to +135
C
Storage temperature ......................... -65
C to +150
C
Voltage on PU, PD, and V
CC
with respect to V
SS
................................. -1V to +7V
Voltage on V
H
and V
L
referenced to V
SS
................................... -8V to +8V
V = |V
H
- V
L
|
X9511W ............................................................. 10V
Lead temperature (soldering 10 seconds)......... 300
C
Wiper current
...........................................................
1mA
ANALOG CHARACTERISTICS
Electrical Characteristics
End-to-end resistance tolerance
...........................
20%
Power rating at 25
C
X9511W ......................................................... 10mW
Wiper current
.................................................
1mA Max.
Typical wiper resistance .......................... 40
at 1mA
Typical noise .............................< -120dB/
Hz Ref: 1V
Resolution
Resistance ............................................................. 3%
Linearity
Absolute linearity
(1)
..........................................
1.0 Ml
(2)
Relative linearity
(3)
...........................................
0.2 Ml
(2)
COMMENT
Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device.
This is a stress rating only; functional operation of the
device (at these or any other conditions above those
listed in the operational sections of this specification) is
not implied. Exposure to absolute maximum rating con-
ditions for extended periods may affect device reliability.
Temperature Coefficient
-40
C to +85
C
X9511W ..................................... +300 ppm/
C Typical
Ratiometric temperature coefficient
................
20 ppm
Wiper Adjustability
Unlimited wiper adjustment....... (Non-Store operation)
Wiper position store operations.......................100,000
data changes
Physical Characteristics
Marking Includes
Manufacturer's Trademark
Resistance Value or Code
Date Code
Notes: (1) Absolute linearity is utilized to determine actual wiper voltage versus expected voltage = (V
w(n)
(actual) - V
w(n)
(expected)) =
1 Ml
Maximum.
(2) 1 Ml = Minimum Increment = R
TOT
/31.
(3) Relative linearity is a measure of the error in step size between taps = V
W(n+1)
- [V
w(n)
+ Ml] = +0.2 Ml
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
X9511
6
FN8205.1
September 6, 2005
D.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified.)
Notes: (4) Typical values are for T
A
= 25C and nominal supply voltage.
(5) This parameter is periodically sampled and not 100% tested.
A.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified.)
POWER-UPPOWER-DOWN AND DOWN REQUIREMENTS
The are no restrictions on the sequencing of V
CC
and the voltage applied to the potentiometer pins during power-up
or power-down conditions. During power-up, the data sheet parameters for the DCP do not fully apply until 1ms after
V
CC
reaches its final value. The V
CC
ramp rate spec is always in effect.
Symbol
Parameter
Limits
Unit
Test Conditions
Min. Typ.
(4)
Max.
I
CC
V
CC
active current
1
3
mA
PU or PD held at V
IL
the other at V
IH
I
SB
Standby supply current
100
200
A
PU = PD = V
IH
I
LI
PU, PD, ASE input leakage current
10
A
V
IN
= V
SS
to V
CC
V
IH
PU, PD, ASE input HIGH voltage
2
V
CC
+ 1
V
V
lL
PU, PD, ASE input LOW voltage
-1
0.8
V
R
W
Wiper resistance
40
100
Max. Wiper Current
1mA
V
VH
VH terminal voltage
-5
+5
V
V
VL
VL terminal voltage
-5
+5
V
C
IN
(5)
ASE, PU, PD input capacitance
10
pF
V
CC
= 5V, V
IN
= 0V, T
A
= 25
C,
f = 1MHz
Symbol
Parameter
Limits
Unit
Min.
Typ.
(6)
Max.
t
GAP
Time between two separate push button events
0
s
t
DB
Debounce time
30
60
ms
t
S SLOW
After debounce to wiper change on a slow mode
100
250
375
ms
t
S FAST
(7)
Wiper change on a fast mode
25
50
75
ms
t
PU
(7)
Power-up to wiper stable
500
s
t
R
V
CC
(7)
V
CC
power-up rate
0.2
50
mV/
s
t
ASTO
(7)
AUTOSTORE cycle time
2
ms
V
ASTH
(7)
AUTOSTORE threshold voltage
4
V
V
ASEND
(7)
AUTOSTORE cycle end voltage
3.5
V
RECOMMENDED OPERATING CONDITIONS
Temp
Min.
Max.
Commercial
0
C
+70
C
Industrial
-40
C
+85
C
Supply Voltage
Limits
X9511
5V
10%
X9511
7
FN8205.1
September 6, 2005
AUTOSTORE Cycle Timing Diagram
Notes: V
ASTH
- AUTOSTORE threshold voltage
V
ASEND -
AUTOSTORE cycle end voltage
t
ASTO -
AUTOSTORE cycle time
(6) Typical values are for T
A
= 25C and nominal supply voltage.
(7) This parameter is periodically sampled and not 100% tested.
Slow Mode Timing
Note: (1) MI in the A.C. timing diagram refers to the minimum incremental change in the wiper voltage.
Fast Mode Timing
Note: (1) MI in the A.C. timing diagram refers to the minimum incremental change in the wiper voltage.
V
ASTH
V
CC
V
ASEND
t
ASTO
Store Time
Autos Cycle in Progress
Volts (V)
Time (ms)
5
t
GAP
t
DB
MI
(1)
V
W
PU
t
DB
PU
t
S SLOW
t
S FAST
MI
(1)
1 Second
V
W
X9511
8
FN8205.1
September 6, 2005
PACKAGING INFORMATION
NOTE:
1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
2. PACKAGE DIMENSIONS EXCLUDE MOLDING FLASH
0.020 (0.51)
0.016 (0.41)
0.150 (3.81)
0.125 (3.18)
0.110 (2.79)
0.090 (2.29)
0.430 (10.92)
0.360 (9.14)
0.300
(7.62) Ref.
Pin 1 Index
0.145 (3.68)
0.128 (3.25)
0.025 (0.64)
0.015 (0.38)
Pin 1
Seating
0.065 (1.65)
0.045 (1.14)
0.260 (6.60)
0.240 (6.10)
0.060 (1.52)
0.020 (0.51)
Typ. 0.010 (0.25)
0
15
8-Lead Plastic Dual In-Line Package Type P
Half Shoulder Width On
All End Pins Optional
.073 (1.84)
Max.
0.325 (8.25)
0.300 (7.62)
Plane
X9511
9
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation's quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
FN8205.1
September 6, 2005
PACKAGING INFORMATION
0.150 (3.80)
0.158 (4.00)
0.228 (5.80)
0.244 (6.20)
0.014 (0.35)
0.019 (0.49)
Pin 1
Pin 1 Index
0.010 (0.25)
0.020 (0.50)
0.050 (1.27)
0.188 (4.78)
0.197 (5.00)
0.004 (0.19)
0.010 (0.25)
0.053 (1.35)
0.069 (1.75)
(4X) 7
0.016 (0.410)
0.037 (0.937)
0.0075 (0.19)
0.010 (0.25)
0 - 8
X 45
8-Lead Plastic Small Outline Gull Wing Package Type S
NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
0.250"
0.050"Typical
0.050"
Typical
0.030"
Typical
8 Places
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X9511
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