®
X9511
Single Push Button Controlled Potentiometer (XDCP™)
Data Sheet
February 2, 2007
FN8205.3
Linear, 32 Taps, Push Button Controlled,
Terminal Voltage ±5V
FEATURES
• Push button controlled
• Low power CMOS
—Active current, 3mA max
—Standby current, 100µA typical
• 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 and 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 = 10kΩ
• 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 (10kΩ) each tap point represents 323Ω.
All Intersil nonvolatile products are designed and
tested for applications requiring extended endurance
and data retention.
ORDERING INFORMATION
PART NUMBER
X9511WP
X9511WPZ (Note)
X9511WPI
X9511WPIZ (Note)
X9511WS**
X9511WSZ*
,
**(Note)
X9511WSI*
,
**
X9511WSIZ*
,
** (Note)
PART MARKING
X9511WP
X9511WP Z
X9511WP I
X9511WP Z I
X9511W
X9511W Z
X9511W I
X9511W Z I
R
TOTAL
(kΩ)
10
TEMPERATURE
RANGE (°C)
0 to +70
0 to +70
-40 to +85
-40 to +85
0 to +70
0 to +70
-40 to +85
-40 to +85
PACKAGE
8 Ld PDIP
PKG. DWG. #
MDP0031
8 Ld PDIP*** (Pb-free) MDP0031
8 Ld PDIP
MDP0031
8 Ld PDIP*** (Pb-free) MDP0031
8 Ld SOIC
8 Ld SOIC (Pb-free)
8 Ld SOIC
8 Ld SOIC (Pb-free)
MDP0027
MDP0027
MDP0027
MDP0027
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.
**Add "T2" suffix for tape and reel.
***Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder
processing applications.
1
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, 2006, 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
X9511
BLOCK DIAGRAM
PU
PD
5-BIT
UP/DOWN
COUNTER
31
30
29
V
H
5-BIT
EEPROM
MEMORY
ONE
OF
28
THIRTY-TWO
DECODER
TRANSFER
GATES
RESISTOR
ARRAY
2
STORE AND
RECALL
CONTROL
CIRCUITRY
1
0
V
L
V
W
ASE
2
FN8205.3
February 2, 2007
X9511
PIN DESCRIPTIONS
V
H
/R
H
and V
L
/R
L
The high (V
H
/R
H
) and low (V
L
/R
L
) 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 V
L
/R
L
and V
H
/R
H
are in reference
to 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
DIP/SOIC
PU
PD
V
H
V
SS
1
2
3
4
X9511
8
7
6
5
V
CC
ASE
V
L
V
W
PIN NAMES
SYMBOL
V
H
/R
H
V
W
/R
W
V
L
/R
L
V
SS
V
CC
PU
PD
ASE
DESCRIPTION
High Terminal
Wiper Terminal
Low Terminal
Ground
Supply Voltage
Push Up Input
Push Down Input
AUTOSTORE Enable Input
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 decrement
a 5-bit counter respectively. The output of this counter
is decoded to select one of the thirty-two wiper posi-
tions along the resistive array. The wiper increment
input, PU and the wiper decrement input, PD are both
connected to an internal pull-up so that they normally
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 position.
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.
3
FN8205.3
February 2, 2007
X9511
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.
V
CC
8
1
2kΩ
2
7
V
CC
PU
PD
ASE
V
H
V
W
V
L
V
SS
3
5
6
8
1
2
7
V
CC
PU
PD
ASE
V
SS
V
H
V
W
V
L
4
3
5
6
V
CC
3.3µF
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
CONTROLLED BY PUSH BUTTON SWITCH
FIGURE 2. TYPICAL CIRCUIT WITH ASE STORE PIN USED
IN AUTOSTORE MODE
4
FN8205.3
February 2, 2007
X9511
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
ΔV
= |V
H
- V
L
|
X9511W ............................................................. 10V
Lead temperature (soldering 10 seconds) ....... +300°C
Wiper current
........................................................... ±1mA
ESD Rating
Human Body Model
(Per MIL-STD-883 Method 3015.7) .................... 2.5kV
Machine Model
(Per EIAJ ED-4701 Method C-111)...................... 250V
ANALOG CHARACTERISTICS
Electrical Characteristics
End-to-end resistance tolerance
...........................±20%
Power rating at +25°C
X9511W ......................................................... 10mW
Wiper current
.................................................±1mA
Max.
Typical wiper resistance .......................................40Ω
Typical noise..............................< -120dB/√Hz Ref: 1V
Resolution
Resistance ............................................................. 3%
Linearity
Absolute linearity
(1)
..........................................±1.0
MI
(2)
Relative linearity
(3)
...........................................±0.2
MI
(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)
- (n*MI + V
W(0)
)]/MI = ±1 MI
Maximum.
(2) 1 Ml = Minimum Increment = R
TOT
/31 for resistor mode or 1MI = [V
W(31)
- V
W(0)
]/31 for voltage divider mode.
(3) Relative linearity is a measure of the error in step size between taps = (V
W(n+1)
- V
W(n)
] )/MI - 1=
±0.2
MI
SYMBOL TABLE
WAVEFORM
INPUTS
Must be
steady
May change
from Low to
High
May change
from High to
Low
Don’t Care:
Changes
Allowed
N/A
OUTPUTS
Will be
steady
Will change
from Low to
High
Will change
from High to
Low
Changing:
State Not
Known
Center Line
is High
Impedance
5
FN8205.3
February 2, 2007
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