®
X9313
Digitally Controlled Potentiometer (XDCP™)
Data Sheet
January 15, 2008
FN8177.6
Linear, 32 Taps, 3 Wire Interface, Terminal
Voltages
±
V
CC
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
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 = 1kΩ, 10kΩ, 50kΩ
• 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)
V
CC
V
SS
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
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, 2008. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
X9313
Ordering Information
PART NUMBER
X9313UMI
X9313UMIZ (Note)
X9313UP
X9313US*
,
**
X9313USZ* (Note)
X9313USI
X9313USIZ (Note)
X9313WMZ (Note)
X9313WMI*
X9313WMIZ* (Note)
X9313WP
X9313WPZ-3
X9313WPI
X9313WPIZ
X9313WS*
,
**
X9313WSZ*
,
** (Note)
X9313WSI*
,
**
X9313WSIZ* (Note)
X9313ZM
X9313ZMZ (Note)
X9313ZMI*
,
**
X9313ZMIZ*
,
** (Note)
X9313ZP
X9313ZPI
X9313ZPIZ (Note)
X9313ZS*
,
**
X9313ZSZ*
,
** (Note)
X9313ZSI*
X9313ZSIZ* (Note)
X9313UM-3T1
X9313UMZ-3T1 (Note)
X9313UMI-3*
X9313UMIZ-3* (Note)
X9313US-3*
,
**
X9313USZ-3*
,
** (Note)
X9313WM-3*
X9313WMZ-3* (Note)
X9313WMI-3*
X9313WMIZ-3* (Note)
PART
MARKING
13UI
DDB
X9313UP
X9313U
X9313U Z
X9313U I
X9313U ZI
DDF
13WI
DDE
X9313WP
X9313WP ZD
X9313WP I
X9313WP ZI
X9313WS
X9313W Z
X9313WS I
X9313WS ZI
313Z
DDJ
13ZI
DDH
X9313ZP
X9313ZP I
X9313ZP ZI
X9313ZS
X9313 Z
X9313ZS I
X9313ZS ZI
13UD
DDD
13UE
13UEZ
X9313U D
X9313U ZD
13WD
DDG
13WE
13WEZ
10
3 to 5.5
50
1
10
V
CC
RANGE
(V)
4.5 to 5.5
R
TOTAL
(kΩ)
50
TEMPERATURE
RANGE
(°C)
-40 to +85
-40 to +85
0 to +70
0 to +70
0 to +70
-40 to +85
-40 to +85
0 to +70
-40 to +85
-40 to +85
0 to +70
-40 to +85
-40 to +85
-40 to +85
0 to +70
0 to +70
-40 to +85
-40 to +85
0 to +70
0 to +70
-40 to +85
-40 to +85
0 to +70
-40 to +85
-40 to +85
0 to +70
0 to +70
-40 to +85
-40 to +85
0 to +70
0 to +70
-40 to +85
-40 to +85
0 to +70
0 to +70
0 to +70
0 to +70
-40 to +85
-40 to +85
PACKAGE
8 Ld MSOP
8 Ld MSOP (Pb-free)
8 Ld PDIP
8 Ld SOIC
8 Ld SOIC (Pb-free)
8 Ld SOIC
8 Ld SOIC (Pb-free)
8 Ld MSOP (Pb-free)
8 Ld MSOP
8 Ld MSOP (Pb-free)
8 Ld PDIP
8 Ld PDIP*** (Pb-free)
8 Ld PDIP
8 Ld PDIP*** (Pb-free)
8 Ld SOIC
8 Ld SOIC (Pb-free)
8 Ld SOIC
8 Ld SOIC (Pb-free)
8 Ld MSOP
8 Ld MSOP (Pb-free)
8 Ld MSOP
8 Ld MSOP (Pb-free)
8 Ld PDIP
8 Ld PDIP
8 Ld PDIP*** (Pb-free)
8 Ld SOIC
8 Ld SOIC (Pb-free)
8 Ld SOIC
8 Ld SOIC (Pb-free)
PKG.
DWG. #
M8.118
M8.118
MDP0031
MDP0027
M8.15
MDP0027
M8.15
M8.118
M8.118
M8.118
MDP0031
MDP0031
MDP0031
MDP0031
MDP0027
M8.15
MDP0027
M8.15
M8.118
M8.118
M8.118
M8.118
MDP0031
MDP0031
MDP0031
MDP0027
M8.15
MDP0027
M8.15
8 Ld MSOP Tape and Reel M8.118
8 Ld MSOP Tape and Reel M8.118
(Pb-free)
8 Ld MSOP
8 Ld MSOP (Pb-free)
8 Ld SOIC
8 Ld SOIC (Pb-free)
8 Ld MSOP
8 Ld MSOP (Pb-free)
8 Ld MSOP
8 Ld MSOP (Pb-free)
M8.118
M8.118
MDP0027
M8.15
M8.118
M8.118
M8.118
M8.118
2
FN8177.6
January 15, 2008
X9313
Ordering Information
(Continued)
PART NUMBER
X9313WS-3*
,
**
X9313WSZ-3* (Note)
X9313ZM-3*
X9313ZMZ-3* (Note)
X9313ZMI-3*
X9313ZMIZ-3* (Note)
X9313ZP-3
X9313ZPZ-3 (Note)
X9313ZS-3*
,
**
X9313ZSZ-3* (Note)
X9313ZSI-3*
X9313ZSIZ-3* (Note)
PART
MARKING
X9313W D
X9313W ZD
13ZD
DDK
13ZE
13ZEZ
X9313ZP D
X9313ZP ZD
X9313Z D
X9313Z ZD
X9313Z E
X9313Z ZE
1
V
CC
RANGE
(V)
3 to 5.5
R
TOTAL
(kΩ)
10
TEMPERATURE
RANGE
(°C)
0 to +70
0 to +70
0 to +70
0 to +70
-40 to +85
-40 to +85
0 to +70
0 to +70
0 to +70
0 to +70
-40 to +85
-40 to +85
PACKAGE
8 Ld SOIC
8 Ld SOIC (Pb-free)
8 Ld MSOP
8 Ld MSOP (Pb-free)
8 Ld MSOP
8 Ld MSOP (Pb-free)
8 Ld PDIP
8 Ld PDIP (Pb-free)***
8 Ld SOIC
8 Ld SOIC (Pb-free)
8 Ld SOIC
8 Ld SOIC (Pb-free)
PKG.
DWG. #
MDP0027
M8.15
M8.118
M8.118
M8.118
M8.118
MDP0031
MDP0031
MDP0027
M8.15
MDP0027
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.
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.
Pinouts
X9313
(8 LD PDIP, 8 LD SOIC)
TOP VIEW
INC
U/D
RH/VH
VSS
1
2
X9313
3
4
6
5
8
7
VCC
CS
RL/VL
RW/VW
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 40Ω at V
CC
= 5V.
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.
X9313
(8 LD MSOP)
TOP VIEW
RH/VH
VSS
RW/VW
RL/VL
1
2
X9313
3
4
6
5
8
7
U/D
INC
VCC
CS
3
FN8177.6
January 15, 2008
X9313
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
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
L
L
INC
U/D
H
L
X
X
X
H
L
Wiper up
Wiper down
Store wiper position
Standby current
No store, return to standby
Wiper up (not recommended)
Wiper down (not recommended)
MODE
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.
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.
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
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.
4
FN8177.6
January 15, 2008
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
ΔV
= |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
≥
10kΩ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10mW
R
TOTAL
1kΩ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .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
Ω
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.
5
FN8177.6
January 15, 2008
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EEWORLD
