The Intersil ISL90461 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:
• LCD contrast control
• Parameter and bias adjustments
• Industrial and Automotive Control
• Transducer adjustment of pressure, temperature, position,
chemical, and optical sensors
• Laser Diode driver biasing
• Gain control and offset adjustment
Features
• Volatile solid-state potentiometer
• 2-pin UP/DN interface
• DCP terminal voltage, 2.7V to 5.5V
• Tempco 35 ppm/
°C typical
• 32 wiper tap points
• Low power CMOS
- Active current, 25µA max.
- Supply current 0.3µA
• Available R
TOTAL
values = 10k50k100k
• Temperature Range
-40°C to +85°C
• Packages
- 6 Ld SC-70, SOT-23
• Pb-Free Plus Anneal Available (RoHS Compliant)
Pinout
ISL90461
(SOT-23, SC-70)
TOP VIEW
RH
VDD
GND
RL
U/D
CS
Ordering Information
PART NUMBER
ISL90461WIE627-TK
ISL90461WIH627-TK
ISL90461UIE627-TK
ISL90461UIH627-TK
ISL90461TIE627-TK
ISL90461TIE627Z-TK (See Note)
ISL90461TIH627-TK
ISL90461TIH627Z-TK (See Note)
PART MARKING
AJP
AJY
AJR
AKA
AJQ
DEA
AJZ
DEB
100
50
R
TOTAL
(K)
10
TEMP RANGE (°C)
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
PACKAGE
6 Ld SC-70
6 Ld SC-70 (Pb-free)
6 Ld SOT-23
6 Ld SC-70
6 Ld SC-70 (Pb-free)
6 Ld SOT-23
6 Ld SC-70
6 Ld SC-70 (Pb-free)
6 Ld SOT-23
PKG. DWG. #
P6.049
P6.049
P6.064
P6.049
P6.049
P6.064
P6.049
P6.049
P6.064
ISL90461WIE627Z-TK (See Note) DEE
ISL90461WIH627Z-TK (See Note) DEF
ISL90461UIE627Z-TK (See Note) DEC
ISL90461UIH627Z-TK (See Note) DED
6 Ld SOT-23 (Pb-free) P6.064
6 Ld SOT-23 (Pb-free) P6.064
6 Ld SOT-23 (Pb-free) P6.064
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
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
R
TOT
PARAMETER
End to end resistance
TEST CONDITIONS/NOTES
W version
U version
T version
V
R
RH, RL terminal voltages
Noise
R
W
I
W
Wiper Resistance
Wiper Current
Resolution
Absolute linearity (Note 1)
Relative linearity (Note 2)
R
TOTAL
temperature coefficient
C
H
/C
L
/C
W
NOTES:
1. Absolute linearity is utilized to determine actual wiper voltage versus expected voltage = (R
H
(n)
(actual) - R
H
(n)
(expected)) = ±1 Ml Maximum.
n = 1 .. 29 only
2. Relative linearity is a measure of the error in step size between taps = R
H
(n+1)
- [R
H
(n)
+ Ml] = ±0.5 Ml, n = 1 .. 29 only.
3. 1 Ml = Minimum Increment = R
TOT
/31.
4. Typical values are for T
A
= 25°C and nominal supply voltage.
Potentiometer capacitances
See equivalent circuit
R
H(n)(actual)
- R
H(n)(expected)
R
H(n+1)
- [R
H(n)+MI
]
±35
10/10/25
1
Ref: 1kHz
MIN
8
40
80
0
-120
600
0.6
32
±1
±0.5
TYP
(Note 4)
10
50
100
MAX
12
60
120
V
CC
UNIT
k
k
k
V
dBV
mA
Taps
MI
(Note 3)
MI
(Note 3)
ppm/°C
pF
Equivalent Circuit
R
TOTAL
R
H
C
H
C
W
C
L
R
L
R
W
FN8229 Rev 3.00
October 14, 2005
Page 3 of 7
ISL90461
DC Electrical Specifications
SYMBOL
I
CC
I
SB
I
LI
V
IH
V
IL
C
IN
PARAMETER
VCC active current (Increment)
Standby supply current
CS input leakage current
CS, U/D input HIGH voltage
CS, U/D input LOW voltage
CS, U/D input capacitance
V
CC
= 3V, V
IN
= V
SS
, T
A
= 25°C, f = 1MHz
10
Over recommended operating conditions unless otherwise specified.
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