intersil ISL23711 DATA SHEET

®

www.BDTIC.com/Intersil

ISL23711

Volatile Digitally Controlled Potentiometer (XDCP™)

Data Sheet August 16, 2005

Terminal Voltage ±3V or ±5V, 128 Taps I2C
Serial Interface

The Intersil ISL23711 is a digitally controlled potentiometer
(XDCP). The device consists of a resistor array, wiper
switches, and a control section. The wiper position is
controlled by an I

2

C interface.

The potentiometer is implemented by a resistor array
composed of 127 resistive elements and a wiper switching
network. The wiper terminal can be connected to either end
of the resistor array or at any one of the Tap Positions in
between, providing 128 steps of resolution between R
R

. The “position” of the wiper is determined by the value

H

and

L

assigned to the volatile Wiper Register (WR). The WR can
be directly written to and read from using standard I

2

C
interface protocol. The device is available in either a 10kΩ or
50kΩ version.

The device can be used as a three-terminal potentiometer or
as a two-terminal variable resistor in a wide variety of
applications including:

• Industrial and Automotive Control

• Parameter and Bias Adjustments

• Amplifier Bias and Control

Ordering Information

TEMP

PAR T N UMBER

(BRAND)

ISL23711WIU10Z
(AOE) (Notes 1, 2)

ISL23711UIU10Z
(AOD) (Notes 1, 2)

NOTES:

1. Add “-T” suffix for tape and reel.

2. 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.

RESISTANCE

OPTION (Ω)

10K -40 to +85 10 Ld MSOP

50K -40 to +85 10 Ld MSOP

RANGE

(°C) PACKAGE

PKG.

DWG. #

M10.118

(Pb-Free)

M10.118

(Pb-Free)

FN6127.0

Features

•I2C Serial Interface with Hardwire Slave Address Allows
up to Four Devices

• DCP Terminal Voltage, from V- to V

CC

• 127 Resistive Elements

- Typical R

- Typical ratiometric tempco ±4ppm/

tempco ±50ppm/°C

TOTAL

°C

- End to end resistance range ±20%

- Wiper resistance = 70Ω typ at V

CC

= 3.3V

• Low Power CMOS

- Standby current, 500nA max

- Active current, 200µA max

= 2.7V to 5.5V

-V

CC

- V- = -2.7V to -5.5V

•R

Values = 10kΩ, 50kΩ

TOTAL

• Volatile Wiper Storage

• Package

-10 Ld MSOP

• Pb-Free Plus Anneal Available (RoHS Compliant)

Pinout

ISL23711

(10 LD MSOP)

TOP VIEW

SDA

GND

A1
A0

1

V-

2
3
4
5

SCL

10

V

9

CC

R

8

L

R

W

7
6

R

H

1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

XDCP is a trademark of Intersil, Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved

All other trademarks mentioned are the property of their respective owners.

Block Diagram

www.BDTIC.com/Intersil

V

CC

GND

SDA
SCL

ISL23711

7-BIT

WIPER

REGISTER

(VOLATILE)

127

126

R

H

SDA
SCL

INTERFACE

A1

A0

AND

CONTROL

V-

SIMPLE BLOCK DIAGRAM

R

H

R

W

R

L

RECALL

CONTROL

CIRCUITRY

A1

A0

SLAVE

ADDRESS

DECODE

ONE

OF

128

DECODER

DETAILED BLOCK DIAGRAM

Pin Descriptions

PIN NUMBER SYMBOL DESCRIPTION

1 SDA Data I/O for I2C serial interface. It has an open drain output and may be wire ORed with other open

drain active low outputs.

2 V- Negative supply voltage for the potentiometer wiper control.

3 GND Ground. Should be connected to a digital ground

4 A1 A1 and A0 are address select pins used to set the slave address for the I

5 A0 A1 and A0 are address select pins used to set the slave address for the I

6R

7R

8R

9V

H

W

L

CC

10 SCL Clock input for the I

A fixed terminal for one end of the potentiometer resistor.

The wiper terminal which is equivalent to the movable terminal of a potentiometer.

A fixed terminal for one end of the potentiometer resistor.

Positive logic supply voltage.

2

C serial interface.

125

124

TRANSFER

GATES

2

1

0

RESISTOR

ARRAY

2

C serial interface.

2

C serial interface.

R

L

R

W

2

FN6127.0

August 16, 2005

ISL23711

www.BDTIC.com/Intersil

Absolute Maximum Ratings Thermal Information

Temperature under bias . . . . . . . . . . . . . . . . . . . . . .-65°C to +135°C

Storage temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C

Voltage on SDA, SCL, A0, and A1

with Respect to GND . . . . . . . . . . . . . . . . . . . . . -0.3 to V

Voltage on V- (referenced to GND) . . . . . . . . . . . . . . . . . . . . . . . -6V

∆V = |V

(RH)-V(RL)

Lead Temperature (soldering 10s) . . . . . . . . . . . . . . . . . . . . . . 300°C

(10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±6mA

I

W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6V

V

CC

, RL, RW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V- to V

R

H

ESD Rating (MIL-STD-883, Method 3015.7 . . . . . . . . . . . . . . .>2kV

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.

NOTE:

3. θ

is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.

JA

| . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12V

CC

+0.3V

CC

Thermal Resistance (Typical, Note 3) θ

MSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Recommended Operating Conditions

Temperature Range (Industrial) . . . . . . . . . . . . . . . . .-40°C to +85°C

V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V

CC

V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2.7V to -5.5V

Analog Specifications Over recommended operating conditions unless otherwise stated.

SYMBOL PARAMETER TEST CONDITIONS MIN

R

TOTAL

V

RH,VRL

R

W

C

H/CL/CW

I

LkgDCP

VOLTAGE DIVIDER MODE (V- @ R

INL

(Note 6)

DNL

(Note 5)

ZSerror
(Note 3)

FSerror
(Note 4)

TC

(Notes 7, 13)

RESISTOR MODE (Measurements between R

RINL

(Note 11)

RDNL

(Note 10)

Roffset

(Note 9)

TC

(Notes 12, 13)

RH to RL Resistance W option 10 kΩ

U option 50 kΩ

to RL Resistance Tolerance -20 +20 %

R

H

RH, RL Terminal Voltage V- V

Wiper Resistance V- = -5.5V; VCC = +5.5V

RW

-V-)/R

CC

CC

unloaded)

TOTAL

Wiper current = (V

Potentiometer Capacitance (Note 13) 10/10/25 pF

Leakage on RH, RL, RW pins Voltage at pins; V- to V

; VCC @ RH; Voltage at RW = V

L

Integral Non-linearity -1 1 LSB

Differential Non-linearity W, U options -0.5 0.5 LSB

Zero-scale Error W option 0 1 4 LSB

U option 0 0.5 2

Full-scale Error W option -4 -1 0 LSB

U option -2 -0.5 0

Ratiometric Temperature Coefficient DCP register set from 16 to 120d, T = -40°C to

V

W

Integral Non-linearity DCP register set between 20 hex and 7F hex.

Differential Non-linearity -0.5 0.5 MI

Offset DCP register set to 00 hex, W option 0 2 5 MI

Resistance Temperature Coefficient DCP register set from 16 to 127d, T = -40°C to

R

+85°C

and RL with RH not connected, or between RW and RH with RL not connected)

Monotonic over all tap positions

DCP register set to 00 hex, U option 0 0.5 2 MI

+85°C

-1 0.1 1 µA

-1 1 MI

TYP

(Note 1) MAX UNIT

70 200 Ω

±4 ppm/°C

±50 ppm/°C

CC

(°C/W)

JA

V

(Note 2)

(Note 2)

(Note 2)

(Note 2)

(Note 8)

(Note 8)

(Note 8)

(Note 8)

3

FN6127.0

August 16, 2005