intersil X93154 DATA SHEET

®

www.BDTIC.com/Intersil

X93154

Low Noise, Low Power, 32 Taps

Data Sheet February 19, 2008

Digitally Controlled Potentiometer
(XDCP™)

The Intersil X93154 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

FN8180.3

Features

• Solid-State Potentiometer

• 3-Wire Serial 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 ±30%

- Terminal V oltage, 0 to V

• Low Power CMOS

-V

= 3V±10%

CC

- Active Current, 250µA max.

- Standby Current, 1µA max.

• High Reliability

- Endurance 200,000 Data Changes Per Bit

- Register Data Retention, 100 years

CC

Pinouts

INC

U/D

V

TOTAL

Value = 50kΩ

•R

• Packages

- 8 Ld MSOP, TDFN

• Pb-free Available (RoHS Compliant)

X93154

(8 LD MSOP)

TOP VIEW

8

1

2

R

H

3

SS

4

V

CC

7

CS
R

6

5

NC

L

*

*

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

and V

CC

INC

U/D

V

R

SS

1

2

3

H

4

X93154

(8 LD TDFN)

TOP VIEW

8

V

CC

7

CS

6

R

L

*

5

NC

1

XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2004, 2005, 2008. All Rights Reserved

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.

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

X93154

www.BDTIC.com/Intersil

Ordering Information

PKG.

PART NUMBER PART MARKING VCC LIMITS (V) R

(kΩ) TEMP RANGE (°C) PACKAGE

TOTAL

DWG. #

X93154UM8I-3* AGK 3 ±10% 50 -40 to +85 8 Ld MSOP M8.118
X93154UM8IZ-3* (Note) AIW -40 to +85 8 Ld MSOP (Pb-free) M8.118
X93154UU8IZ-3* (Note) AKH -40 to +85 8 Ld TDFN (Pb-free) L8.2.5x2
*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.

Block Diagram

V

(SUPPLY VOLTAGE)

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

V

(Ground)

SS

H

5-BIT

NONVOLATILE

MEMORY

STORE AND

CONTROL

RECALL

R

L

V

CC

V

SS

CIRCUITRY

ONE

THIRTY

TWO

DECODER

GENERAL

Pin Descriptions

MSOP, TDFN SYMBOL BRIEF DESCRIPTION

1INC

2U/D

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

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

minimum voltage is V

and RL pins of the X93154 are equivalent to the fixed terminals of a mechanical potentiometer. The

H

and the maximum is VCC. The terminology of RH and RL references the relative position of

SS

the terminal in relation to wiper movement direction selected by the U/D
Ground.

SS

RL. The R

L

minimum voltage is V
the terminal in relation to wiper movement direction selected by the U/D

and RL pins of the X93154 are equivalent to the fixed terminals of a mechanical potentiometer. The

H

and the maximum is VCC. The terminology of RH and RL references the relative position of

SS

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 X93154 will be placed in the low power standby mode until the device is selected once again.
Supply Voltage.

CC

29

28

OF

and VCC.)

SS

2

1

0

DETAILED

input.

input.

TRANSFER

GATES

input.

RESISTOR

ARRAY

R

L

2

FN8180.3

February 19, 2008

X93154

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3V ±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 voltage versus expected voltage = (V
n = 1.. 29 only

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

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

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

Temperature Under Bias . . . . . . . . . . . . . . . . . . . . .-65°C to +135°C

Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . .see link below

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

H(n+1)

(actual)-V

H(n)

-[V

+ 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

R

W

I

W

C

H/CL/CW

R

End-to-End Resistance 35 50 65 kΩ
RH, RL Terminal Voltages 0 V
Power Rating R

Noise Ref: 1kHz -120 dBV

Wiper Resistance (Note 5) 1000 Ω
Wiper Current (Note 5) 0.6 mA
Resolution 3%
Absolute Linearity

Relative Linearity (Note 2) V

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

R

TOTAL

Potentiometer Capacitances See “Circuit #2 SPICE Macro

(Note 1) V

= 50kΩ 1mW

TOTAL

H(n)(actual)-VH(n)(expected)

-[V

H(n+1)

Model” on page 4

]±0.5MI

H(n)+MI

(Note 7)

DC Electrical Specifications Over recommended operating conditions, unless otherwise specified.

MIN

SYMBOL PARAMETER TEST CONDITIONS

I

CC1

I

CC2

I

SB

VCC Active Current (Increment) CS = VIL, U/D = VIL or VIH and INC =0.4V @

VCC Active Current (Store)
(EEPROM Store)

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

max. t

CYC

CS = VIH, U/D = VIL or VIH and INC =V
max. t

WR

- 0.3V

V

CC

IH

(Note 7)

@

TYP

(Note 4)

10/10/25 pF

TYP

(Note 4)

50 250 µA

MAX

(Note 7) UNIT

CC

±1 MI

MAX

(Note 7) UNIT

600 µA

1µA

V

(Note 5)

(Note 5)

(Note 3)

(Note 3)

(Note 5)

3

FN8180.3

February 19, 2008