ISL95310 Intersil Corporation, ISL95310 Datasheet

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ISL95310

Manufacturer Part Number
ISL95310
Description
128 Taps Up/Down Interface
Manufacturer
Intersil Corporation
Datasheet

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ISL95310UIU10Z
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Terminal Voltage 0V to 13.2V, 128 Taps
Up/Down Interface
The Intersil ISL95310 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 an Up/Down interface.
The potentiometer is implemented by a resistor array
composed of 127 resistive elements and a wiper switching
network. Between each element and at either end are tap
points accessible to the wiper terminal. The wiper of each
potentiometer has an associated volatile Wiper Counter
Register (WR) and a non-volatile Initial Value Register (IVR)
that can be directly written to and read by the user. The
contents of the WR controls the position of the wiper on the
resistor array through the switches. At power-up, the device
recalls the contents of the default data registers to the
corresponding WR. 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:
• LCD contrast control
• Parameter and bias adjustments
• Mechanical potentiometer replacement
• Industrial and automotive control
Ordering Information
ISL95310WIU10Z
(See Note)
ISL95310UIU10Z
(See Note)
Add “-TK” 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.
PART NUMBER
RESISTANCE
OPTION
10K
50K
(Ω)
®
1
-40 to +85
-40 to +85
RANGE
Datasheet
TEMP
(°C)
10 Ld MSOP
10 Ld MSOP
PACKAGE
(Pb-Free)
(Pb-Free)
1-888-INTERSIL or 321-724-7143
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved
Digitally Controlled Potentiometer (XDCP™)
Features
• Non-volatile solid-state potentiometer
• Up/down interface with chip select enable
• DCP terminal voltage, 0 to +13.2V
• 128 wiper tap points - 0.8% resolution
• 127 resistive elements
• Low power CMOS
• High reliability
• R
• 10-lead MSOP package
Pinout
- Wiper position stored in nonvolatile memory and
- Temperature compensated
- Low wiper resistance 70Ω typical @ 3.3V
- Standby current, 2µA at V
- Endurance, 200,000 data changes per bit
- Register data retention 50 years @ T ≤ 75°C
- Pb-free plus anneal available (RoHS compliant)
TOTAL
recalled on power-up
All other trademarks mentioned are the property of their respective owners.
|
values = 10kΩ, 50kΩ
May 6, 2005
Intersil (and design) is a registered trademark of Intersil Americas Inc.
GND
V
U/D
NC
CS
CC
1
2
3
4
5
(10 LD MSOP)
TOP VIEW
ISL95310
CC
= +3.6V
10
9
8
7
6
ISL95310
INC
V+
R
R
R
L
W
H
FN8083.0

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ISL95310 Summary of contents

Page 1

... Datasheet Terminal Voltage 0V to 13.2V, 128 Taps Up/Down Interface The Intersil ISL95310 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 an Up/Down interface. The potentiometer is implemented by a resistor array composed of 127 resistive elements and a wiper switching network ...

Page 2

... SYMBOL 1 U/D 2 GND INC 2 ISL95310 U/D 7-BIT INC UP/DOWN COUNTER 7-BIT NONVOLATILE R MEMORY W R DECODER L STORE AND RECALL CONTROL CIRCUITRY DETAILED BLOCK DIAGRAM DESCRIPTION Controls the direction of wiper movement and whether the counter is incremented or decremented ...

Page 3

... RINL Integral non-linearity (Note 11) RDNL Differential non-linearity (Note 10) Roffset Offset (Note 9) TC Resistance Temperature Coefficient R (Note 12) 3 ISL95310 Recommended Operating Conditions Temperature Range (Industrial .-40°C to +85° 2.7V to 5.5V CC +0. 8.0V to 13.2V CC Wiper current of each DCP . . . . . . . . . . . . . . . . . . . . . . . . . . ±3.0mA TEST CONDITIONS W option U option ...

Page 4

... CS to INC setup Cl t (Note 13) INC HIGH to U/D change lD t (Note 13) U/D to INC setup DI t INC LOW period lL t INC HIGH period lH t INC inactive to CS inactive lC 4 ISL95310 TEST CONDITIONS , U and INC = 0.4V/2. min not connected CYC U and INC = 0 ...

Page 5

... 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 5 ISL95310 = 5V ±10 Full Operating Temperature Range unless otherwise stated (Continued PARAMETER ) and V(R ) are V(R ) for the DCP register set to 7F hex and 00 hex respectively. LSB is the ...

Page 6

... ISL95310 will be placed in the low power standby mode until the device is selected once again. Principles of Operation There are three sections of the ISL95310: the input control, reaches its CC counter and decode section; the nonvolatile memory; and the resistor array. The input control section operates just like an up/down counter ...

Page 7

... The value of the counter is stored in nonvolatile memory whenever CS transitions HIGH while the INC input is also HIGH. The system may select the ISL95310, move the wiper and deselect the device without having to store the latest wiper position in nonvolatile memory. After the wiper movement is ...

Page 8

... 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 8 ISL95310 10 Lead MSOP, Package Code 0.0106 [0.27] 4 ...

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