NOT RECOMMENDED FOR NEW DESIGNS
POSSIBLE SUBSTITUTE PRODUCT
ISL90461, ISL90462, ISL23511
DATASHEET
ISL90460
FN8225
Rev 4.00
October 22, 2015
Single Volatile 32-Tap XDCP™ Digitally Controlled Potentiometer (XDCP)
The Intersil ISL90460 is a digitally controlled potentiometer
(XDCP). Configured as a variable resistor, the device
consists of a resistor array, wiper switches, a control section,
and volatile memory. The wiper position is controlled by a
2-pin Up/Down 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 and U/D inputs.
The device can be used in a wide variety of applications
including:
Features
• Volatile Solid-State Potentiometer
• 2-pin UP/DN Interface
• DCP Terminal Voltage, 2.7V to 5.5V
• Tempco 35ppm/°C Typical
• 32 Wiper Tap Points
• Low Power CMOS
- Active current 25µA max.
- Supply current 0.3µA
• Available RTOTAL Values = 10k50k100k
• LCD contrast control
• Temp Range -40°C to +85°C
• Parameter and bias adjustments
• Packages
- 5 Ld SC-70, SOT-23
• Industrial and automotive control
• Transducer adjustment of pressure, temperature, position,
chemical, and optical sensors
• Laser Diode driver biasing
• Pb-Free Plus Anneal Available (RoHS Compliant)
Pinout
ISL90460
(5 LD SOT-23, SC-70)
TOP VIEW
• Gain control and offset adjustment
VDD
RH
GND
U/D
FN8225 Rev 4.00
October 22, 2015
CS
Page 1 of 8
ISL90460
Ordering Information
PART NUMBER
PART MARKING
RTOTAL (K)
TEMP RANGE (°C)
10
-40 to +85
5 Ld SC-70 (Pb-free)
P5.049
-40 to +85
5 Ld SOT-23 (Pb-free)
P5.064
-40 to +85
5 Ld SC-70 (Pb-free)
P5.049
-40 to +85
5 Ld SOT-23 (Pb-free)
P5.064
-40 to +85
5 Ld SC-70 (Pb-free)
P5.049
-40 to +85
5 Ld SOT-23 (Pb-free)
P5.064
ISL90460WIE527Z-TK (See Note) DDY
No longer available or supported,
recommended replacement:
ISL90460TIH527Z-TK
ISL90460WIH527Z -TK (See Note) DDZ
ISL90460UIE527Z-TK (See Note) DDW
No longer available or supported,
recommended replacement:
ISL90460TIH527Z-TK
50
ISL90460UIH527Z -TK (See Note) DDX
No longer available or supported,
recommended replacement:
ISL90460TIH527Z-TK
ISL90460TIE527Z-TK (See Note) DDU
No longer available or supported,
recommended replacement:
ISL90460TIH527Z-TK
ISL90460TIH527Z-TK (See Note)
100
DDV
PACKAGE (Tape and Reel)
PKG. DWG. #
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.
Block Diagram
Pin Descriptions
VCC
SOT-23/SC-70
5-PIN
SYMBOL
1
VDD
Supply voltage
2
GND
Ground
3
U/D
Up - Down
AND
4
CS
Chip select
MEMORY
5
RH
High terminal/Wiper terminal
UP/DOWN
RH
(U/D)
CONTROL
DEVICE SELECT
DESCRIPTION
(CS)
GND (GROUND)
GENERAL
FN8225 Rev 4.00
October 22, 2015
Page 2 of 8
ISL90460
Absolute Maximum Ratings
Recommended Operating Conditions
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Voltage on CS, U/D and VCC with Respect to GND . . . . -1V to +7V
Lead Temperature (Soldering 10s) . . . . . . . . . . . . . . . . . . . . . 300°C
IW (10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±6mA
Power Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1mW
Temperature Range (Industrial) . . . . . . . . . . . . . . . . . . -40°C to 85°C
Supply Voltage (VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
CAUTION: 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
conditions for extended periods may affect device reliability.
Potentiometer SpecificationsOver recommended operating conditions unless otherwise stated
SYMBOL
RTOT
VR
MIN
TYP
(Note 4)
MAX
UNIT
W version
8
10
12
k
U version
40
50
60
k
T version
80
100
120
k
VCC
V
PARAMETER
End to end resistance
CONDITIONS
RH, RL terminal voltages
Noise
0
Ref: 1kHz
RW
Wiper Resistance
IW
Wiper Current
Resolution
dBV
600
1
Absolute linearity (Note 1)
RH(n)(actual) - RH(n)(expected)
Relative linearity (Note 2)
RH(n+1) - [RH(n)+MI]
RTOTAL temperature coefficient
CH/CL/CW
-120
Potentiometer capacitances
See equivalent circuit
0.6
mA
32
Taps
±1
MI
(Note 3)
±0.5
MI
(Note 3)
±35
ppm/°C
10/10/25
pF
NOTES:
1. Absolute linearity is utilized to determine actual wiper voltage versus expected voltage = (RH(n)(actual) - RH(n)(expected)) = ±1 Ml Maximum.
n = 1 .. 29 only.
2. Relative linearity is a measure of the error in step size between taps = RH(n+1) - [RH(n) + Ml] = ±0.5 Ml, n = 1 .. 29 only.
3. 1 Ml = Minimum Increment = RTOT/31.
4. Typical values are for TA = 25°C and nominal supply voltage.
Equivalent Circuit
RTOTAL
RL
RH
CW
CH
CL
RW
FN8225 Rev 4.00
October 22, 2015
Page 3 of 8
ISL90460
DC Electrical Specifications
SYMBOL
Over recommended operating conditions unless otherwise specified.
PARAMETER
TEST CONDITIONS
MIN
TYP
(Note 4)
MAX
UNIT
25
µA
1
µA
ICC
VCC active current (Increment)
CS = 0V, U/D = fclock = 1MHz and
VCC = 3V
ISB
Standby supply current
CS = VCC, U/D = VSS or VCC = 3V
ILI
CS input leakage current
VIN = VSS to VCC
±1
µA
ILI
U/D input leakage current
VIN = VSS to VCC
±1
µA
VIH
CS, U/D input HIGH voltage
VIL
CS, U/D input LOW voltage
CIN
CS, U/D input capacitance
Timing Specifications
0.3
VCC x 0.7
V
VCC x 0.3
VCC = 3V, VIN = VSS, TA = 25°C,
f = 1MHz
V
10
pF
Over recommended operating conditions unless otherwise specified) (Figures 1 and 2)
SYMBOL
PARAMETER
MIN
TYP (Note 4)
MAX
UNIT
tCU
U/D to CS setup
25
ns
tCI
CS to U/D setup
50
ns
tIC
CS to U/D hold
25
ns
tlL
U/D LOW period
300
ns
tlH
U/D HIGH period
300
ns
fTOGGLE
Up/Down toggle rate
1
MHz
tSETTLE
Output settling time
1
µs
CS
tCU
tIC
tIL
U/D
tCI
tIH
tSETTLE
RH
FIGURE 1. SERIAL INTERFACE TIMING DIAGRAM, INCREMENT
FN8225 Rev 4.00
October 22, 2015
Page 4 of 8
ISL90460
CS
tCU
tIC
tIH
U/D
tCI
tIL
tSETTLE
RH
FIGURE 2. SERIAL INTERFACE TIMING DIAGRAM, DECREMENT
Pin Descriptions
RH
The ISL90460 contains a digital potentiometer connected as a
rheostat or variable resistor. The wiper and one terminal of the
digital potentiometer is tied to the RH pin, and the other
terminal of the potentiometer is tied to the ground pin (GND).
The resistance from the RH pin to ground will vary with the
potentiometer setting; at the highest setting, the resistance will
be the maximum (Rtot), at the lowest setting it will be a
minimum.
Up/Down (U/D)
The U/D input controls the direction of the wiper movement
and whether the counter is incremented or decremented.
Chip Select (CS)
The device is selected when the CS input is LOW. The current
counter value is stored in volatile memory when CS is returned
HIGH. When CS is high, the device is placed in low power
standby mode.
Principles of Operation
There are two sections of the ISL90460: 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 single 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. At either end of the array and
between each resistor is an electronic switch that transfers the
connection at that point to the wiper. The wiper is connected to
the RH terminal, forming a variable resistor from RH to GND.
The direction of the wiper movement is defined when the
device is selected. If during CS transition from High to Low the
U/D input is LOW, the wiper will move down on each rising
edge of U/D toggling. Similarly, the wiper will move up on each
rising edge of U/D toggling if, during CS transition from High to
Low, the U/D input is High.
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.
If the wiper is moved several positions, multiple taps are
connected to the wiper for tSETTLE (U/D to RH change). The
2-terminal resistance value for the device can temporarily
change by a significant amount if the wiper is moved several
positions.
FN8225 Rev 4.00
October 22, 2015
Page 5 of 8
ISL90460
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to the web to make
sure that you have the latest revision.
DATE
REVISION
October 22, 2015
FN8225.4
CHANGE
Added Rev History and About Intersil Verbiage.
Updated Ordering Information on page 2
Updated PODs to most recent revisions.
Made correction to Pkg Dwg # in Ordering Information table “P5.046” to P5.064”
About Intersil
Intersil Corporation is a leading provider of innovative power management and precision analog solutions. The company's products
address some of the largest markets within the industrial and infrastructure, mobile computing and high-end consumer markets.
For the most updated datasheet, application notes, related documentation and related parts, please see the respective product
information page found at www.intersil.com.
You may report errors or suggestions for improving this datasheet by visiting www.intersil.com/ask.
Reliability reports are also available from our website at www.intersil.com/support
© Copyright Intersil Americas LLC 2005-2015. All Rights Reserved.
All trademarks and registered trademarks are the property of their respective owners.
For additional products, see www.intersil.com/en/products.html
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found at www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such
modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets 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
FN8225 Rev 4.00
October 22, 2015
Page 6 of 8
ISL90460
Package Outline Drawing
P5.064
5 LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE
Rev 3, 4/11
8°
0°
3.00 3
2.80
(1.90)
5
0.22
0.08 5
4
3.00
2.60
1.70
1.50
3
2
(0.95)
SEE DETAIL X
0.50
0.30
0.20 (0.008) M C
TOP VIEW
END VIEW
0.25
0.10
0.10 MIN
1.30
0.90
1.45 SEATING
0.90 PLANE
C
GAUGE PLANE
SEATING
PLANE
4
0.55
0.35
C
0.15
0.00
0.10 (0.004) C
(0.60)
SIDE VIEW
8°
0°
(0.25)
DETAIL "X"
5x (0.60)
5x (1.2)
5
4
(2.4)
NOTES:
1. Dimensioning and tolerance per ASME Y14.5M-1994.
3
2. Package conforms to EIAJ SC-74 and JEDEC MO178AA.
3. Package length and width are exclusive of mold flash, protrusions,
or gate burrs.
4. Footlength measured at reference to gauge plane.
5. Lead thickness applies to the flat section of the lead between
0.08mm and 0.15mm from the lead tip.
(2x 0.95)
6. Controlling dimension: MILLIMETER.
Dimensions in ( ) for reference only.
(1.90)
TYPICAL RECOMMENDED LAND PATTERN
FN8225 Rev 4.00
October 22, 2015
Page 7 of 8
ISL90460
Small Outline Transistor Plastic Packages (SC70-5)
P5.049
D
VIEW C
e1
5 LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE
INCHES
5
SYMBOL
4
E
CL
1
2
CL
3
e
E1
b
CL
0.20 (0.008) M
C
C
CL
A
A2
SEATING
PLANE
A1
-C-
PLATING
b1
0.043
0.80
1.10
-
0.004
0.00
0.10
-
A2
0.031
0.039
0.80
1.00
-
b
0.006
0.012
0.15
0.30
-
b1
0.006
0.010
0.15
0.25
c
0.003
0.009
0.08
0.22
6
c1
0.003
0.009
0.08
0.20
6
D
0.073
0.085
1.85
2.15
3
E
0.071
0.094
1.80
2.40
-
E1
0.045
0.053
1.15
1.35
3
e
0.0256 Ref
0.65 Ref
-
e1
0.0512 Ref
1.30 Ref
-
L2
c1
NOTES
0.031
0.010
0.018
0.017 Ref.
0.26
0.46
4
0.420 Ref.
0.006 BSC
0o
N
c
MAX
0.000
WITH
MIN
A
L
b
MILLIMETERS
MAX
A1
L1
0.10 (0.004) C
MIN
-
0.15 BSC
8o
0o
5
8o
-
5
5
R
0.004
-
0.10
-
R1
0.004
0.010
0.15
0.25
Rev. 3 7/07
NOTES:
BASE METAL
1. Dimensioning and tolerances per ASME Y14.5M-1994.
2. Package conforms to EIAJ SC70 and JEDEC MO-203AA.
4X 1
3. Dimensions D and E1 are exclusive of mold flash, protrusions,
or gate burrs.
R1
4. Footlength L measured at reference to gauge plane.
5. “N” is the number of terminal positions.
R
GAUGE PLANE
SEATING
PLANE
L
C
L1
L2
6. These Dimensions apply to the flat section of the lead between
0.08mm and 0.15mm from the lead tip.
7. Controlling dimension: MILLIMETER. Converted inch dimensions are for reference only.
4X 1
VIEW C
0.4mm
0.75mm
2.1mm
0.65mm
TYPICAL RECOMMENDED LAND PATTERN
FN8225 Rev 4.00
October 22, 2015
Page 8 of 8
