intersil X93156 DATA SHEET

®

www.BDTIC.com/Intersil

X93156

Single Digitally Controlled Potentiometer (XDCP™)

Data Sheet November 21, 2007

Low Noise, Low Power, 3 wire Up/Down,
32 Taps

The Intersil X93156 is a three-terminal 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 31 resistive elements and a wiper switching
network. 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 a 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 the programming of bias voltages,
LCD brightness and contrast control as well as the
implementation of ladder networks.

Features

• Solid-state potentiometer

• Up/Down interface

• 32 wiper tap points

- Wiper position stored in nonvolatile memory and
recalled on power-up

• 31 resistive elements

- Temperature compensated

- Maximum resistance tolerance of ±25%

- Terminal voltage, 0 to V

• Low power CMOS

-V

= 2.7V to 5.5V

CC

- Active current, 200µA typ.

- Standby current, 2µA max.

• High reliability

- Endurance 200,000 data changes per bit

- Register data retention, 100 years

CC

FN8182.3

•R

value = 12.5kΩ, 50kΩ

TOTAL

• Package

- 8 Ld MSOP

- Pb-free Available (RoHS compliant)

Pinout

X93156

(8 LD MSOP)

TOP VIEW

INC

U/D

V

1

2

R

H

SS

X93156

3

4

8

V

CC

7

CS
R

6

5

L

Rw

1

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

1-888-INTERSIL or 1-888-468-3774

XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005, 2007. All Rights Reserved

| Intersil (and design) is a registered trademark of Intersil Americas Inc.

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

X93156

www.BDTIC.com/Intersil

Ordering Information

PART

PART NUMBER

MARKING

X93156WM8I AGO 5 ±10% 12.5 -40 to +85 8 Ld MSOP M8.118
X93156WM8I-2.7* AGR 2.7 to 5.5 12.5 -40 to +85 8 Ld MSOP M8.118
X93156UM8I-2.7* AGP 2.7 to 5.5 50 -40 to +85 8 Ld MSOP M8.118
X93156WM8IZ-2.7* (Note) DCK 2.7 to 5.5 12.5 -40 to +85 8 Ld MSOP (Pb-free) M8.118
X93156UM8IZ-2.7* (Note) AKV 2.7 to 5.5 50 -40 to +85 8 Ld MSOP (Pb-free) M8.118
X93156WM8IZ DCJ 5 ±10% 12.5 -40 to +85 8 Ld MSOP (Pb-free) M8.118
*Add “-T1” suffix for tape and reel. Please refer to TB347 for details on reel specifications.

NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and 100%
matte tin plate PLUS ANNEAL - e3 termination finish, which is 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.

V

CC

RANGE (V)

R

TOTAL

(kΩ)

TEMP

RANGE (°C) PACKAGE

PKG.

DWG. #

Block Diagram

(SUPPLY VOLTAGE)

V

CC

30k

U/D
INC

CS

5-BIT
UP/DOWN
COUNTER

31

30

R

H

R

UP/DOWN

)

(U/D

INCREMENT

)

(INC

DEVICE SELECT

(CS

)

CONTROL

AND

MEMORY

(GROUND)

V

SS

GENERAL

H

5-BIT

R

W

R

L

V

CC

V

SS

NONVOLATILE

MEMORY

STORE AND

CONTROL

RECALL

CIRCUITRY

Pin Descriptions

MSOP SYMBOL BRIEF DESCRIPTION

1INC

2U/D

3R

4V
5RwR

6R

7CS

8V

Increment (INC). The INC input is negative-edge triggered. Toggling INC will move the wiper and either increment or
decrement the counter in the direction indicated by the logic level on the U/D

Up/Down (U/D). The U/D input controls the direction of the wiper movement and whether the counter is incremented or
decremented.

RH. The R

H

voltage is VSS and the maximum is VCC. The terminology of RH and RL references the relative position of the terminal in
relation to wiper movement direction selected by the U/D

Ground.

SS

. The Rw pin of the X93156 is the wiper terminal of the potentiometer which is equivalent to the movable terminal of a

W

mechanical potentiometer.

RL. The R

L

voltage is VSS and the maximum is VCC. The terminology of RH and RL references the relative position of the terminal in
relation to wiper movement direction selected by the U/D

and RL pins of the X93156 are equivalent to the fixed terminals of a mechanical potentiometer. The minimum

H

input.

and RL pins of the X93156 are equivalent to the fixed terminals of a mechanical potentiometer. The minimum

H

input.

Chip Select (CS). The device is selected when the CS input is LOW. The current counter value is stored in nonvolatile
memory when CS

is returned HIGH while the INC input is also HIGH. After the store operation is complete, the X93156 will

be placed in the low power standby mode until the device is selected once again.

Supply Voltage.

CC

ONE

OF

THIRTY

TWO

DECODER

29

28

2

1

0

DETAILED

input.

TRANSFER

GATES

RESISTOR

ARRAY

R

W

R

L

2

FN8182.3

November 21, 2007

X93156

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 CS

, INC, U/D, RH, RL and V

CC

with respect to VSS. . . . . . . . . . . . . . . . . . . . . . . . . . .-1V to +6.5V

Maximum resistor current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA

CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.

NOTE:

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

1. θ

JA

Potentiometer Specifications Over recommended operating conditions unless otherwise stated.

SYMBOL PARAMETER TEST CONDITIONS/NOTES

R

TOT

V

R

I

W

C

H/CL/CW

R

W

End to end resistance 9.375 12.5 15.625 kΩ

RH, RL terminal voltages 0 V
Power rating (Note 7) 1 mW
Noise Ref: 1kHz (Note 7) -120 dBV
Wiper Resistance 1100 Ω
Wiper Current (Note 6) ±0.6 mA
Resolution 3%
Absolute linearity (Note 2) V

H(n)(actual)

(Note 4)

Relative linearity (Note 3) V

temperature coefficient (Note 7) ±35 ppm/°C

R

TOTAL

H(n + 1)

Potentiometer capacitances See circuit #2 (Note 7) 10/10/25 pF

Thermal Resistance (Typical, Note 1) θ

8 Ld MSOP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below

http://www.intersil.com/pbfree/Pb-FreeReflow.asp

Recommended Operating Conditions

Temperature Range

Industrial. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C

Supply Voltage V

X93156xxx-2.7. . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V (Note 8)

X93156xxx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5V ±10%

- V

H(n)(expected)

- [V

] (Note 4) ±0.5 MI

H(n) + MI

CC

MIN

(Note 9) TYP

37.5 50 62.5 kΩ

MAX

(Note 9) UNIT

CC

±1 MI

(°C/W)

JA

V

DC Electrical Specifications Over recommended operating conditions unless otherwise specified.

SYMBOL PARAMETER TEST CONDITIONS

I

CC1

I

CC2

I

SB

I

VCC active current (Increment) CS = VIL, U/D = VIL or VIH and INC = 0.4V

VCC active current (Store)
(EEPROM Store)

@ max. t
CS

@ max. t

CYC VCC

= VIL, U/D = VIL or VIH and INC = 0.4V

CYC VCC

CS = VIH, U/D = VIL or VIH and INC =

@max. t

V

IH

CS

= VIH, U/D = VIL or VIH and INC =

V

@max. t

IH

= 3V

= 5V

WR VCC

WR VCC

= 3V

= 5V

Standby supply current CS = VCC - 0.3V, U/D and INC = VSS or

CS input leakage current VIN = V

LI

- 0.3V V

V

CC

= VCC - 0.3V, U/D and INC = VSS or

CS

- 0.3V V

V

CC

CC

CC

CC

= 3V

= 5V

3

MIN

(Note 9)

TYP

(Note 5)

MAX

(Note 9) UNIT

50 250 µA

200 300 µA

600 µA

1400 µA

1µA

2µA

±1 µA

November 21, 2007

FN8182.3