intersil X9C103, X9C104, X9C503 DATA SHEET

X9C102, X9C103, X9C104, X9C503

Data Sheet December 20, 2006

Digitally Controlled Potentiometer (XDCP™)

FEATURES

• Solid-state potentiometer

• 3-wire serial interface

• 100 wiper tap points —Wiper position stored in nonvolatile memory

and recalled on power-up

• 99 resistive elements —Temperature compensated —End to end resistance, ±20% —Terminal voltages, ±5V

• Low power CMOS —V

= 5V

—Active current, 3mA max. —Standby current, 750µA max.

• High reliability —Endurance, 100,000 data changes per bit —Register data retention, 100 years

• X9C102 = 1kΩ

• X9C103 = 10kΩ

• X9C503 = 50kΩ

• X9C104 = 100kΩ

• Packages —8 Ld SOIC and 8 Ld PDIP

• Pb-free plus anneal available (RoHS compliant)

FN8222.1

DESCRIPTION

The X9Cxxx are Intersil digitally controlled (XDCP)

potentiometers. The device consists of a resis tor

array, wiper switches, a control section, and nonvola-

tile memory. The wiper position is controlled by a

three-wire interface.

The potentiometer is implemented by a resistor array

composed of 99 resistive elements and a wiper switch-

ing network. Between each element and at either end

are tap points accessible to the wiper terminal. 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 potentiom-

eter or as a two-terminal variable resistor in a wide

variety of applications including:

– control

– parameter adjustments

– signal processing

BLOCK DIAGRAM

(Supply Voltage)

Up/Down

(U/D

)

Increment

Device

Select

(INC

(CS

)

Control

and

Memory

VSS (Ground)

General

U/D

INC

VH/R

RW/V

VL/R

GND

7-Bit

Up/Down

Counter

7-Bit

Nonvolatile

Memory

Store and

Recall

Control

Circuitry

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

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

One

One-

Hundred

Decoder

Detailed

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

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

Transfer

Gates

Resistor

Array

RH/V

L/VL

RW/V

X9C102, X9C103, X9C104, X9C503

PIN DESCRIPTIONS

Pin Symbol Brief Description

1INCIncrement . 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

2U/D

Up/Down. The U/D input controls the direction of the wiper movement and whether the cou nter

is incremented or decremented.

H/VH

RH/VH. The high (V

) terminals of the X9C102/103/104/503 are equivalent to the fixed

H/RH

terminals of a mechanical potentiometer. The minimum voltage is -5V and the maximum is +5V.

The terminology of V

relation to wiper movement dire ction selected by the U/D

and VL/RL references the relative position of the terminal in

H/RH

input and not the voltage potential on

the terminal.

4 V

5 V

W/RW

VW/R

VW/RW is the wiper terminal, and is equivalent to the movable terminal of a mechanica l

po te nti om et er . T he po sit io n o f t he wi per wi th in th e a rr ay i s d et er mi ne d b y th e c on tr ol inputs. The

wiper terminal series resistance is typically 40Ω.

6 R

RL/V

. The low (V

terminals of a mechanical potentiometer. The minimum voltage is -5V and the maximum is +5V.

The terminology of V

relation to wiper movement dire ction selected by the U/D

) terminals of the X9C102/103/1 04/503 are equivalent to the fixed

L/RL

and VL/RL references the relative position of the terminal in

H/RH

input and not the voltage potential on

the terminal.

7CSCS. 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 op-

eration is complete the X9C102/103/104/503 device will be placed in the low power standby mode

until the device is selected once again.

8 V

input.

FN8222.1

December 20, 2006

X9C102, X9C103, X9C104, X9C503

ABSOLUTE MAXIMUM RATINGS

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

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

Voltage on CS

, INC, U/D and V

with respect to VSS.................................. -1V to +7V

Voltage on V

H/RH

and VL/R

referenced to VSS................................... -8V to +8V

ΔV = |V

H/RH

- VL/RL|

X9C102 ....................................... ........................ 4V

X9C103, X9C503, and X9C104 ......................... 10V

Lead temperature (soldering, 10 seconds)...... +300°C

(10 seconds) ..................... ............................ 8. 8mA

Power rating X9C102 ......... ............................... 16mW

Power rating X9C103/104/503 ........ .................. 10mW

RECOMMENDED OPERATING CONDITIONS

Temperature Min. Max.

Commercial 0°C +70°C

Industrial -40°C +85°C

COMMENT

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) i s

not implied. Exposure to absolute maximum rating

conditions for extended periods may affect device reliability.

Supply Voltage (VCC)

Limits

X9C102/103/104/503 5V ±10%

POTENTIOMETER CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.)

Limits

Symbol Parameter

TOTAL

VH/RH

VL/RL

End to end resistance variation -20 +20 %

VH terminal voltage -5 +5 V

VL terminal voltage -5 +5 V

Wiper current -4.4 4.4 mA

Wiper resistance 40 100 Ω Wiper Current = ±1mA

(5)

Noise

-120 dBV Ref. 1kHz

Unit Test Conditions/NotesMin. Typ. Max.

Resolution 1 %

(2)

(1)

-1 +1 MI

-0.2 +0.2 MI

Absolute linearity

Relative linearity

RTOTAL temperature coefficient ±300

RTOTAL temperature coefficient ±600

(5)

(3)

W(n)(actual)

W(n + 1)(actual)

- V

W(n)(expected)

- [V

ppm/°C X9C103/503/104

ppm/°C X9C102

W(n) + MI

Ratiometric temperature coefficient ±20 ppm/°C

H/CL/CW

(5)

Not es: (1 ) Absolute linearity is utilized to determine actual wiper voltage versus expected voltage = [V

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

(3) 1 MI = Minimum Increment = R

(4) Typical values are for T

(5) This parameter is not 100% tested.

Potentiometer capacitances 10/10/25 pF See Circuit #3, Macro Model

/99

TOT

= +25°C and nominal supply voltage.

W(n + 1)

- [V

W(n)(actual)

W(n) + MI

- V

W(n)(expected )

] = +0.2 MI.

] = ±1 MI Maximum.

]

FN8222.1

December 20, 2006

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