intersil X9015 DATA SHEET
®
www.BDTIC.com/Intersil
X9015
Low Noise, Low Power, Volatile
Data Sheet August 31, 2006
Single Digitally Controlled (XDCP™)
Potentiometer
The Intersil X9015 is a 32 tap potentiometer that is volatile.
The device consists of a string of 31 resistors that can be
programmed to connect the R
the nodes between the connecting resistors. The connection
point of the wiper is determined by information
communicated to the device on the 3-wire port. The 3-wire
port changes the tap position by a falling edge on the
increment pin. The direction the wiper moves is determined by
the state of the up/down pin. The wiper positi on at power up is
Tap #15.
The X9015 can be used in a wide variety of applications that
require a digitally controlled variable resistor to set analog
values.
wiper output with any of
W/VW
FN8157.5
Features
•32 taps
• Three-wire up/down serial interface
•VCC = 2.7V–5V
• Operating I
= 50µA max.
CC
• Standby current = 1µA max.
•R
TOTAL
= 10kΩ, 50kΩ
• Packages 8 Ld SOIC, 8 Ld MSOP
• Pb-free plus anneal available (RoHS compliant)
Pinout
SOIC/MSOP
V
CC
8
CS
7
R
L/VL
6
RW/V
5
W
RH/V
V
INC
U/D
SS
1
2
H
X9015
3
4
Block Diagram
V
(Supply Voltage)
CC
Up/Down
)
(U/D
Increment
(INC
Device Select
(CS
Control
)
)
(Ground)
V
SS
General
R
H/VH
RW/V
RL/V
U/D
INC
CS
W
L
V
CC
V
SS
5-Bit
Up/Down
Counter
Control
Circuitry
One
of
Thirty
Two
Decoder
31
30
29
28
2
1
0
Detailed
Transfer
Gates
Resistor
Array
RH/V
RL/V
RW/V
H
L
W
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005, 2006. All Rights Reserved
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
All other trademarks mentioned are the property of their respective owners.
Ordering Information
www.BDTIC.com/Intersil
X9015
TEMPERATURE
PART NUMBER PART MARKING VCC LIMITS (V) R
X9015WS8T1 X9015W 5 ±10% 10 0 to +70 8 Ld SOIC
X9015WS8ZT1 (Note) X9015W Z 0 to +70 8 Ld SOIC (Pb-free)
X9015UM8 ABB 50 0 to +70 8 Ld MSOP M8.118
X9015UM8Z (Note) DCF 0 to +70 8 Ld MSOP (Pb-free) M8.118
X9015UM8I* ABD -40 to +85 8 Ld MSOP M8.118
X9015UM8IZ* (Note) DCD -40 to +85 8 Ld MSOP (Pb-free) M8.118
X9015US8* X9015U 0 to +70 8 Ld SOIC M8.15
X9015US8Z* (Note) X9015U Z 0 to +70 8 Ld SOIC (Pb-free) M8.15
X9015US8I* X9015U I -40 to +85 8 Ld SOIC M8.15
X9015US8IZ* (Note) X9015U Z I -40 to +85 8 Ld SOIC (Pb-free) M8.15
X9015WS8-2.7* X9015W F 2.7-5.5 10 0 to +70 8 Ld SOIC M8.15
X9015WS8Z-2.7* (Note) X9015W ZF 0 to +70 8 Ld SOIC (Pb-free) M8.15
X9015UM8-2.7* ABC 50 0 to +70 8 Ld MSOP M8.118
X9015UM8Z-2.7* (Note) DCF 0 to +70 8 Ld MSOP (Pb-free) M8.118
X9015UM8I-2.7* ABE -40 to +85 8 Ld MSOP M8.118
X9015UM8IZ-2.7* (Note) DCE -40 to +85 8 Ld MSOP (Pb-free) M8.118
X9015US8-2.7* X9015U F 0 to +70 8 Ld SOIC M8.15
X9015US8Z-2.7* (Note) X9015U ZF 0 to +70 8 Ld SOIC (Pb-free) M8.15
X9015US8I-2.7* X9015U G -40 to +85 8 Ld SOIC M8.15
X9015US8IZ-2.7* (Note) X9015U ZG -40 to +85 8 Ld SOIC (Pb-free) M8.15
* Add “T1” suffix for tape and reel.
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.
TOTAL
(kΩ)
RANGE (°C) PACKAGE
Tape and Reel
Tape and Reel
PKG.
DWG. #
M8.15
M8.15
2
FN8157.5
August 31, 2006
X9015
www.BDTIC.com/Intersil
Pin Descriptions
RH/VH and RL/V
The high (RH/VH) and low (RL/VL) terminals of the X9015 are
equivalent to the fixed terminals of a mechanical
potentiometer. The minimum volt age is V
maximum is V
references the relative position of the terminal in relation to
wiper movement direction selected by the U/D
the voltage potential on the terminal.
RW/V
W
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 200Ω at
V
=5V. At power up the wiper position is at Tap #15.
CC
(V
=Tap #0).
L/RL
Up/Down (U/D)
The U/D input controls the direction of the wiper movement
and whether the tap position 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.
Chip Select (CS)
The device is selected when the CS input is LOW. When CS
is returned HIGH while the INC
will be placed in the low power standby mode until the device
is selected once again.
L
and the
SS
. The terminology of RL/VL and RH/VH
CC
input, and not
input is also HIGH the X9015
Pin Names
SYMBOL DESCRIPTION
RH/V
RW/V
RL/V
V
SS
V
CC
U/D
INC
CS
H
W
L
High terminal
Wiper terminal
Low terminal
Ground
Supply voltage
Up/Down control input
Increment control input
Chip select control input
The wiper, when at either fixed terminal, act s li ke it s
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
R
significant amount if the wiper is moved several positi ons.
When the device is powered-down, the wiper position is lost.
When power is restored, the wiper is set to Tap #15.
value for the device can temporarily be reduced by a
TOTAL
(INC to VW change). The
IW
Instructions and Programming
The INC, U/D and CS inputs control the movement of the
wiper along the resistor array. With CS
selected and enabled to respond to the U/D
HIGH to LOW transitions on INC
(depending on the state of the U/D
The output of this counter is decoded to select one of thirty
two wiper positions along the resistive array.
The system may select the X9015, move the wiper and
deselect the device. The new wiper position will be maintained
until changed by the system or until a power-up/down cycle.
The state of U/D
This allows the host system to enable the device and then
move the wiper up and down until the proper trim is attained.
may be changed while CS remains LOW.
set LOW the device is
and INC inputs.
will increment or decrement
input) a five bit counter.
Mode Selection
CS INC U/D MODE
LH
LL
HX
HXX
LLX
L H Wiper Up (not recommended)
LL
Wiper up
Wiper down
Standby mode
Standby mode
Normal mode
Wiper Down (not recommended)
Principles Of Operation
There are two sections of the X9015: the input control,
counter and decode section; 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 sin gle electronic
switch connecting a point on the resistor array to the wiper
output. The resistor array is comprised of 31 individual
resistors connected in series.
3
FN8157.5
August 31, 2006
X9015
www.BDTIC.com/Intersil
Absolute Maximum Ratings Operating Conditions
Temperature under bias. . . . . . . . . . . . . . . . . . . . . .-65°C to +135°C
Storage temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Voltage on CS
V
CC
Δ
V = |VH–VL| . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5V
Lead temperature (soldering 10s) . . . . . . . . . . . . . . . . . . . . .+300°C
(10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±7.5mA
I
W
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
)
Potentiometer Specifications Over recommended operating conditions unless otherwise stated
SYMBOL PARAMETER TEST CONDITIONS/NOTES MIN. TYP. MAX. UNIT
R
C
H/CL/CW
, INC, U/D, VH, VL and
with respect to VSS . . . . . . . . . . . . . . . . . . . . . . . . -1V to +7V
TOTAL
V
VH
V
VL
R
W
R
W
I
W
End to End Resistance Variation –20 +20 %
VH/RH Terminal Voltage 0 V
VL/RL Terminal Voltage 0 V
Power Rating R
Wiper Resistance IW = 1mA, VCC = 5V 200 400 Ω
Wiper Resistance IW = 1mA, VCC = 2.7V 400 1000 Ω
Wiper Current -3.75 3.75 mA
Noise Ref: 1kHz -120 dBV
Resolution 3%
Absolute Linearity (Note 1) V
Relative Linearity (Note 2) V
Temperature Coefficient ±300 ppm/°C
R
TOTAL
Ratiometric Temperature Coefficient ±20 ppm/° C
Potentiometer Capacitances See circuit #3 10/10/25 pF
TOTAL
w(n)(actual)–Vw(n)(expected)
w(n+1)
≤1kΩ 10 mW
–[V
Temperature Range
Commercial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C
Industrial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Supply Voltage (V
X9015. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5V ±10%
X9015-2.7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
] -0.2 +0.2 MI (Note 3)
w(n)+MI
)
CC
CC
CC
-1 +1 MI (Note 3)
V
V
Power Up and Down Requirements
The are no restrictions on the power-up or power-down conditions of VCC and the voltages applied to the potentiometer pins
provided that V
always in effect.
NOTES:
1. Absolute Linearity is utilized to determine actual wiper voltage versus expected voltage = (V
2. Relative Linearity is a measure of the error in step size between
taps = V
3. 1 Ml = Minimum Increment = R
4. Typical values are for T
5. This parameter is periodically sampled and not 100% tested.
is always more positive than or equal to VH, VL, and VW, i.e., VCC ≥ VH, VL, VW. The VCC ramp rate spec is
CC
W
(n+1)
– [V
+ Ml] = ±0.2 Ml.
w(n)
/31.
TOT
= +25°C and nominal supply voltage.
A
(actual)–V
w(n)
(expected)) = ±1 Ml Maximum.
w(n)
4
FN8157.5
August 31, 2006
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