DATASHEET
X9313
Digitally Controlled Potentiometer (XDCP™) Linear, 32 Taps, 3 Wire Interface,
Terminal Voltages ± VCC
The Intersil X9313 is a digitally controlled potentiometer
(XDCP). The device consists of a resistor array, wiper
switches, a control section, and nonvolatile memory. The
wiper position is controlled by a 3-wire interface.
The potentiometer is implemented by a resistor array
composed of 31 resistive elements and a wiper switching
network. Between each element and at either end are tap
points accessible to the wiper terminal. The position of the
wiper element is controlled by the CS, U/D, and INC inputs.
The position of the wiper can be stored in nonvolatile
memory and then be recalled upon a subsequent power-up
operation.
The device can be used as a three-terminal potentiometer or
as a two-terminal variable resistor in a wide variety of
applications including:
• Control
• Parameter adjustments
• Signal processing
FN8177
Rev 7.00
October 7, 2015
Features
• Solid-state potentiometer
• 3-wire serial interface
• 32 wiper tap points
- Wiper position stored in nonvolatile memory and
recalled on power-up
• 31 resistive elements
- Temperature compensated
- End-to-end resistance range ±20%
- Terminal voltages, -V
CC
to +V
CC
• Low power CMOS
- V
CC
= 3V or 5V
- Active current, 3mA max.
- Standby current, 500µA max.
• High reliability
- Endurance, 100,000 data changes per bit
- Register data retention, 100 years
• R
TOTAL
values = 1k, 10k, 50k
• Packages
- 8 Ld SOIC, 8 Ld MSOP and 8 Ld PDIP
• Pb-free available (RoHS compliant)
Block Diagram
DECODER
U/D
INC
CS
5-BIT
UP/DOWN
COUNTER
31
30
29
5-BIT
NONVOLATILE
MEMORY
28
ONE OF
THIRTY-TWO
OUTPUTS
ACTIVE
AT A
TIME
2
V
SS
(GROUND)
GENERAL
STORE AND
RECALL
CONTROL
CIRCUITRY
1
0
R
L
/V
L
R
W
/V
W
DETAILED
R
H
/V
H
V
CC
(SUPPLY VOLTAGE)
UP/DOWN
(U/D)
INCREMENT
(INC)
DEVICE SELECT
(CS)
CONTROL
AND
MEMORY
R
H
/V
H
R
W
/V
W
TRANSFER
GATES
RESISTOR
ARRAY
R
L
/V
L
V
CC
V
SS
FN8177 Rev 7.00
October 7, 2015
Page 1 of 12
X9313
Ordering Information
PART NUMBER
X9313UMIZ* (Note)
X9313USZ* (Note)
X9313USIZ* (Note)
X9313WMZ* (Note)
X9313WMIZ* (Note)
X9313WPIZ
X9313WSZ* (Note)
X9313WSIZ* (Note)
X9313ZMZ* (Note)
X9313ZMIZ* (Note)
X9313ZSZ* (Note)
X9313ZSIZ* (Note)
X9313UMZ* (Note)
X9313UMZ-3* (Note)
X9313UMIZ-3* (Note)
X9313USZ-3* (Note)
X9313WMZ-3* (Note)
X9313WMIZ-3* (Note)
X9313WSZ-3* (Note)
X9313ZMZ-3* (Note)
X9313ZMIZ-3* (Note)
X9313ZSZ-3* (Note)
X9313ZSIZ-3* (Note)
PART
MARKING
DDB
X9313U Z
X9313U ZI
DDF
DDE
X9313WP ZI
X9313W Z
X9313WS ZI
DDJ
DDH
X9313 Z
X9313ZS ZI
DDC
DDD
13UEZ
X9313U ZD
DDG
13WEZ
X9313W ZD
DDK
13ZEZ
X9313Z ZD
X9313Z ZE
1
10
3 to 5.5
3 to 5.5
50
50
1
10
V
CC
RANGE
(V)
4.5 to 5.5
R
TOTAL
(k)
50
TEMPERATURE
RANGE
(°C)
-40 to +85
0 to +70
-40 to +85
0 to +70
-40 to +85
-40 to +85
0 to +70
-40 to +85
0 to +70
-40 to +85
0 to +70
-40 to +85
0 to +70
0 to +70
-40 to +85
0 to +70
0 to +70
-40 to +85
0 to +70
0 to +70
-40 to +85
0 to +70
-40 to +85
PACKAGE
8 Ld MSOP (Pb-free)
8 Ld SOIC (Pb-free)
8 Ld SOIC (Pb-free)
8 Ld MSOP (Pb-free)
8 Ld MSOP (Pb-free)
8 Ld PDIP*** (Pb-free)
8 Ld SOIC (Pb-free)
8 Ld SOIC (Pb-free)
8 Ld MSOP (Pb-free)
8 Ld MSOP (Pb-free)
8 Ld SOIC (Pb-free)
8 Ld SOIC (Pb-free)
8 Ld MSOP
8 Ld MSOP
8 Ld MSOP (Pb-free)
8 Ld SOIC (Pb-free)
8 Ld MSOP (Pb-free)
8 Ld MSOP (Pb-free)
8 Ld SOIC (Pb-free)
8 Ld MSOP (Pb-free)
8 Ld MSOP (Pb-free)
8 Ld SOIC (Pb-free)
8 Ld SOIC (Pb-free)
PKG.
DWG. #
M8.118
M8.15
M8.15
M8.118
M8.118
MDP0031
M8.15
M8.15
M8.118
M8.118
M8.15
M8.15
M8.118
M8.118
M8.118
M8.15
M8.118
M8.118
M8.15
M8.118
M8.118
M8.15
M8.15
NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100%
matte tin plate plus anneal (e3 termination finish, which is 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. Please refer to TB347 for details on reel specifications.
**Add "T2" suffix for tape and reel. Please refer to TB347 for details on reel specifications.
***Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications.
Pin Descriptions
RH/VH and RL/VL
The high (RH/VH) and low (RL/VL) terminals of the X9313 are
equivalent to the fixed terminals of a mechanical
potentiometer. The terminology of RL/VL and RH/VH
references the relative position of the terminal in relation to
wiper movement direction selected by the U/D input and not
the voltage potential on the terminal.
Up/Down (U/D)
The U/D input controls the direction of the wiper movement
and whether the counter is incremented or decremented.
Increment (INC)
The INC input is negative-edge triggered. Toggling INC will
move the wiper and either increment or decrement the counter
in the direction indicated by the logic level on the U/D input.
RW/VW
RW/VW is the wiper terminal and is equivalent to the movable
terminal of a mechanical potentiometer. The position of the
wiper within the array is determined by the control inputs. The
wiper terminal series resistance is typically 40 at V
CC
= 5V.
FN8177 Rev 7.00
October 7, 2015
Page 2 of 12
X9313
Chip Select (CS)
The device is selected when the CS input is LOW. The current
counter value is stored in nonvolatile memory when CS is
returned HIGH while the INC input is also HIGH. After the store
operation is complete, the X9313 will be placed in the low power
standby mode until the device is selected once again.
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.
The electronic switches on the device operate in a “make
before break” mode when the wiper changes tap positions. If
the wiper is moved several positions, multiple taps are
connected to the wiper for t
IW
(INC to V
W
change). The
R
TOTAL
value for the device can temporarily be reduced by a
significant amount if the wiper is moved several positions.
When the device is powered-down, the last wiper position
stored will be maintained in the nonvolatile memory. When
power is restored, the contents of the memory are recalled and
the wiper is set to the value last stored.
Pinouts
X9313
(8 LD PDIP, 8 LD SOIC)
TOP VIEW
INC
U/D
RH/VH
VSS
1
2
3
4
X9313
8
7
6
5
VCC
CS
RL/VL
RW/VW
Instructions and Programming
The INC, U/D and CS inputs control the movement of the wiper
along the resistor array. With CS set LOW the device is
selected and enabled to respond to the U/D and INC inputs.
HIGH to LOW transitions on INC will increment or decrement
(depending on the state of the U/D input) a seven bit counter.
The output of this counter is decoded to select one of thirty-two
wiper positions along the resistive array.
The value of the counter is stored in nonvolatile memory
whenever CS transitions HIGH while the INC input is also
HIGH.
The system may select the X9313, move the wiper and
deselect the device without having to store the latest wiper
position in nonvolatile memory. After the wiper movement is
performed as previously described and once the new position
is reached, the system must keep INC LOW while taking CS
HIGH. The new wiper position will be maintained until changed
by the system or until a power-up/down cycle recalled the
previously stored data.
This procedure allows the system to always power-up to a
preset value stored in nonvolatile memory; then during system
operation, minor adjustments could be made. The adjustments
might be based on user preference, system parameter
changes due to temperature drift, etc.
The state of U/D may be changed while CS remains LOW. This
allows the host system to enable the device and then move the
wiper up and down until the proper trim is attained.
TABLE 2. MODE SELECTION
CS
L
L
H
H
X
L
INC
U/D
H
L
X
X
X
Wiper up
Wiper down
Store wiper position
Standby current
No store, return to standby
MODE
X9313
(8 LD MSOP)
TOP VIEW
RH/VH
VSS
RW/VW
RL/VL
1
2
3
4
X9313
8
7
6
5
U/D
INC
VCC
CS
TABLE 1. PIN NAMES
SYMBOL
RH/VH
RW/VW
RL/VL
VSS
VCC
U/D
INC
CS
DESCRIPTION
High terminal
Wiper terminal
Low terminal
Ground
Supply voltage
Up/Down control input
Increment control input
Chip Select control input
Principles of Operation
There are three sections of the X9313: the input control,
counter and decode section; the nonvolatile memory; and the
resistor array. The input control section operates 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 output. Under the proper conditions, the
contents of the counter can be stored in nonvolatile 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
transfers the potential at that point to the wiper.
FN8177 Rev 7.00
October 7, 2015
Page 3 of 12
X9313
TABLE 2. MODE SELECTION
CS
INC
L
L
U/D
H
L
MODE
Wiper up (not recommended)
Wiper down (not recommended)
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
FN8177 Rev 7.00
October 7, 2015
Page 4 of 12
X9313
Absolute Maximum Ratings
Temperature Under Bias . . . . . . . . . . . . . . . . . . . . .-65°C to +135°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Voltage on CS, INC, U/D, and
V
CC
with Respect to V
SS
. . . . . . . . . . . . . . . . . . . . . . . -1V to +7V
Voltage on V
H
, V
L
, V
W
with respect to V
SS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . -6V to +7V
V
= |V
H
- V
L
|:
X9313Z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4V
X9313W, X9313U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10V
I
W
(10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±8.8mA
ESD Rating
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0kV
Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200V
Recommended Operating Conditions
Temperature:
Commercial. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C
Industrial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Supply Voltage (VCC):
X9313 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5V ±10%
X9313-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 5.5V
Max Wiper current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±4.4mA
Power rating:
R
TOTAL
10k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10mW
R
TOTAL
1k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16mW
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Pb-free PDIPs can be used for through hole wave solder processing
only. They are not intended for use in Reflow solder processing
applications
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
Potentiometer Characteristics
SYMBOL
PARAMETER
Over recommended operating conditions, unless otherwise stated.
LIMITS
TEST CONDITIONS
MIN
TYP
MAX
±20
-
V
CC
-
V
CC
I
W
= (V
H
- V
L
)/R
TOTAL
, V
CC
= 5V
40
+
V
CC
+
V
CC
100
±4.4
Ref: 1kHz
-120
3
R
W(n)(actual)
- R
W(n)(expected)
R
W(n+1)
- (R
W(n)
+MI)
±300
±20
See Circuit #3
10/10/25
±1
±0.2
UNIT
%
V
V
mA
dBV
%
MI
(Note 3)
MI
(Note 3)
ppm/°C
ppm/°C
pF
End-to-end Resistance Tolerance
V
VH
V
VL
R
W
I
W
V
H
Terminal Voltage
V
L
Terminal Voltage
Wiper Resistance
Wiper Current
Noise (Note 5)
Resolution
Absolute Linearity (Note 1)
Relative Linearity (Note 2)
R
TOTAL
Temperature Coefficient (Note 5)
Ratiometric Temperature Coefficient
(Note 5)
C
H
/C
L
/C
W
(Note 5)
NOTES:
Potentiometer Capacitances
1. Absolute linearity is utilized to determine actual wiper voltage versus expected voltage = (V
W(n)(actual)
- V
W(n)(expected)
) = ±1 MI maximum.
2. Relative linearity is a measure of the error in step size between taps = R
W(n+1)
- (R
W(n)
+ MI) = ±0.2 MI.
3. 1 MI = minimum increment = R
TOT
/31.
FN8177 Rev 7.00
October 7, 2015
Page 5 of 12
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