intersil X93155 DATA SHEET

®

www.BDTIC.com/Intersil

X93155

Data Sheet February 19, 2008

Digitally Controlled Potentiometer
(XDCP™)

The Intersil X93155 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 a 3-wire 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 nonvolatile memory and then be recalled upon
during a subsequent power-up operation.

The device is connected as a two-terminal variable resistor
and can be used in a wide variety of applications including:

- Bias and Gain Control

- LCD Contrast Adjustment

Pinout

X93155

(8 LD MSOP)

TOP VIEW

8

INC

U/D

V

1

2

R

H

3

SS

4

V

CC

7

CS
R

6

5

NC

L

*

Features

• Solid-state potentiometer

• Up/Down interface

• 32 wiper tap points per potentiometer

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

• 31 resistive elements per potentiometer

- Temperature compensated

- Maximum resistance tolerance ±25%

- Terminal voltage, 0 to V

• Low power CMOS

-V

= 5V ±10%

CC

- Active current, 200µA typ.

- Standby current, 2.0µA max

• High reliability

- Endurance 200,000 data changes per bit

- Register data retention, 100 years

TOTAL

value = 50kΩ

•R

• Packages

- 8 Ld MSOP

• Pb-free available (RoHS compliant)

CC

FN8181.2

*NC can be left unconnected, or connected to any voltage between VSS

and V

CC.

Ordering Information

TEMP

PART NUMBER PART MARKING VCC LIMITS (V) R

X93155UM8I* AGM 5 ±10% 50 -40 to +85 8 Ld MSOP M8.118
X93155UM8IZ* (Note) DCH -40 to +85 8 Ld MSOP

*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.

1

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

1-888-INTERSIL or1-888-468-3774

XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005, 2008. All Rights Reserved

TOTAL

(kΩ)

RANGE (°C) PACKAGE PKG DWG. #

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

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

M8.118

(Pb-free)

Block Diagram

www.BDTIC.com/Intersil

(SUPPLY VOLTAGE)

V

CC

30kΩ

U/D
INC

CS

X93155

5-BIT
UP/DOWN
COUNTER

31

30

R

H

ONE

OF

THIRTY

TWO

29

28

TRANSFER

GATES

2

1

0

RESISTOR

ARRAY

UP/DOWN

)

(U/D

INCREMENT

)

(INC

DEVICE SELECT

(CS

)

CONTROL

AND

MEMORY

(Ground)

V

SS

R

H

5-BIT

NONVOLATILE

MEMORY

STORE AND

CONTROL

RECALL

R

L

V

CC

V

SS

CIRCUITRY

DECODER

GENERAL

DETAILED

Pin Descriptions

MSOP SYMBOL BRIEF DESCRIPTION

1INC

2U/DUp/Down (U/D). The U/D input controls the direction of the wiper movement and whether the counter is incremented or

3R
4V
5NCNo Connection (or can be connected to any voltage between V
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

input.

decremented.

SS

H

L

RH. The R
Ground.

RL. The R

and RL pins of the X93155 are equivalent to the end terminals of a variable resistor.

H

and VCC.)

SS

and RL pins of the X93155 are equivalent to the end terminals of a variable resistor.

H

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 X93155

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

Supply Voltage.

CC

R

L

2

FN8181.2

February 19, 2008

X93155

www.BDTIC.com/Intersil

Absolute Maximum Ratings Thermal Information

Voltage on CS, INC, U/D, RH, RL and V

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

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

CC

Recommended Operating Conditions

Temperature Range

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

Supply Voltage

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5V ±10% (Note 6)

V

CC

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.

NOTES:

1. Absolute linearity is utilized to determine actual wiper resistance versus expected resistance = (R
n = 1 .. 29 only

2. Relative linearity is a measure of the error in step size between taps = R

3. 1 Ml = Minimum Increment = R

4. Typical values are for T

5. Limits established by characterization and are not production tested.

6. When performing multiple write operations, V

7. Parts are 100% tested at +25°C. Over-temperature limits established by characterization and are not production tested.

= +25°C and nominal supply voltage.

A

TOT

/31.

must not decrease by more than 150mV from its initial value.

CC

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

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

Maximum reflow temperature (40s). . . . . . . . . . . . . . . . . . . . +240°C

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

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

H(n+1)

(actual)-R

H(n)

—[R

+ Ml] = ±0.5 Ml, n = 1 .. 29 only.

H(n)

(expected)) = ±1 Ml Maximum.

H(n)

Potentiometer Specifications Over recommended operating conditions, unless otherwise stated.

MIN

SYMBOL PARAMETER TEST CONDITIONS/NOTES

R

TOT

V

I

R

C

H/CL/CW

R

End-to-end Resistance 37.5 50 62.5 kΩ
RH, RL Terminal Voltages 0 V
Power Rating R

Noise Ref: 1kHz -120 dBV

Potentiometer Current (Note 5) 0.6 mA
Resolution 3%
Absolute linearity

Relative linearity

Temperature Coefficient (Note 5) ±35 ppm/°C

R

TOTAL

Potentiometer Capacitances See “Circuit #2 SPICE Macro

(Note 1) R

(Note 2) R

=50kΩ 1mW

TOTAL

H(n)(actual)-RH(n)(expected)

-[R

H(n+1)

Model” on page 4

]±0.5MI

H(n)+MI

(Note 7)

DC Electrical Specifications Over recommended operating conditions unless otherwise specified.

SYMBOL PARAMETER TEST CONDITIONS

I

CC1

I

CC2

I

I

SB

VCC Active Current (Increment) CS = VIL, U/D = VIL or VIH and

= 0.4V @ max. t

INC

VCC Active Current (Store)
(EEPROM Store)

Standby Supply Current CS = VCC - 0.3V , U/D and INC= VSS

CS VCS = V

LI

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

=V

CC

@ max. t

IH

- 0.3V

CC

INC

or V

CYC

WR

MIN

(Note 7)

TYP

(Note 4)

10/10/25 pF

TYP

(Note 4)

200 300 µA

MAX

(Note 7) UNIT

CC

(Note 5)

(Note 5)

±1 MI

(Note 3)

(Note 3)

(Note 5)

MAX

(Note 7) UNIT

1400 µA

2.0 µA

±1 µA

V

3

FN8181.2

February 19, 2008