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ISL90460TIH527Z-TK

P1-P3P4-P6P7-P8
4
FN8225.4
October 22, 2015
DC Electrical Specifications Over recommended operating conditions unless otherwise specified.
SYMBOL PARAMETER TEST CONDITIONS MIN
TYP
(Note 4) MAX UNIT
I
CC
V
CC
active current (Increment) CS = 0V, U/D = f
clock
= 1MHz and
V
CC
=3V
25 µA
I
SB
Standby supply current CS = V
CC
, U/D = V
SS
or V
CC
= 3V 0.3 1 µA
I
LI
CS input leakage current V
IN
= V
SS
to V
CC
±1 µA
I
LI
U/D input leakage current V
IN
= V
SS
to V
CC
±1 µA
V
IH
CS, U/D input HIGH voltage V
CC
x 0.7 V
V
IL
CS, U/D input LOW voltage V
CC
x 0.3 V
C
IN
CS, U/D input capacitance V
CC
= 3V, V
IN
= V
SS
, T
A
= 25°C,
f=1MHz
10 pF
Timing Specifications Over recommended operating conditions unless otherwise specified) (Figures 1 and 2)
SYMBOL PARAMETER MIN TYP (Note 4) MAX UNIT
t
CU
U/D to CS setup 25 ns
t
CI
CS to U/D setup 50 ns
t
IC
CS to U/D hold 25 ns
t
lL
U/D LOW period 300 ns
t
lH
U/D HIGH period 300 ns
f
TOGGLE
Up/Down toggle rate 1 MHz
t
SETTLE
Output settling time 1 µs
CS
U/D
RH
t
CU
t
CI
t
IL
t
IH
t
IC
t
SETTLE
FIGURE 1. SERIAL INTERFACE TIMING DIAGRAM, INCREMENT
ISL90460
5
FN8225.4
October 22, 2015
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 t
SETTLE
(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.
CS
U/D
RH
t
CU
t
CI
t
IL
t
IH
t
IC
t
SETTLE
FIGURE 2. SERIAL INTERFACE TIMING DIAGRAM, DECREMENT
ISL90460
6
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9001 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets 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
FN8225.4
October 22, 2015
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
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 CHANGE
October 22, 2015 FN8225.4 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”
ISL90460
P1-P3P4-P6P7-P8

ISL90460TIH527Z-TK

Mfr. #:
Buy ISL90460TIH527Z-TK
Manufacturer:
Renesas / Intersil
Description:
Digital Potentiometer ICs ISL90460TIH527Z DCP VOLATILE 100KOHM S
Lifecycle:
New from this manufacturer.
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