X9C103P - Xicor, Inc. - Datasheet.Live

X9C102/103/104/503

©Xicor, Inc. 1994, 1995 Patents Pending Characteristics subject to change without notice

3863-2.4 9/18/96 T2/C0/D0 SH

DESCRIPTION

The Xicor X9C102/103/104/503 is a solid state nonvola-

tile potentiometer and is ideal for digitally controlled

resistance trimming.

The X9C102/103/104/503 is a resistor array composed of

99 resistive elements. Between each element and at

either end are tap points accessible to the wiper element.

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 resolution of the X9C102/103/104/503 is equal to

the maximum resistance value divided by 99. As an

example, for the X9C503 (50KΩ) each tap point repre-

sents 505Ω.

All Xicor nonvolatile memories are designed and tested

for applications requiring extended endurance and data

retention.

FEATURES

•Compatible with X9102/103/104/503

•Low Power CMOS

—VCC = 5V

—Active Current, 3mA Max

—Standby Current, 500µA Max

•99 Resistive Elements

—Temperature Compensated

—± 20% End to End Resistance Range

•100 Wiper Tap Points

—Wiper Positioned via Three-Wire Interface

—Similar to TTL Up/Down Counter

—Wiper Position Stored in Nonvolatile

Memory and Recalled on Power-Up

•100 Year Wiper Position Data Retention

•X9C102 = 1KΩ

•X9C103 = 10KΩ

•X9C503 = 50KΩ

•X9C104 = 100KΩ

E2POT™ Nonvolatile Digital Potentiometer

X9C102/103/104/503

E2POT™ is a trademark of Xicor, Inc.

3863 FHD F01

FUNCTIONAL DIAGRAM

7-BIT

UP/DOWN

COUNTER

7-BIT

NONVOLATILE

MEMORY

STORE AND

RECALL

CONTROL

CIRCUITRY

ONE

ONE-

HUNDRED

DECODER RESISTOR

ARRAY

U/D

INC

VCC

GND

TRANSFER

GATES

Terminal Voltage ±5V, 100 Taps

APPLICATION NOTES

AVAILABLE

AN42 • AN44–48 • AN50 • AN52 • AN53 • AN71 • AN73

X9C102/103/104/503

PIN DESCRIPTIONS

VH and VL

The high (VH) and low (VL) terminals of the X9C102/103/

104/503 are equivalent to the fixed terminals of a

mechanical potentiometer. The minimum voltage is –5V

and the maximum is +5V. It should be noted that the

terminology of VL and VH references the relative position

of the terminal in relation to wiper movement direction

selected by the U/D input and not the voltage potential on

the terminal.

VW is the wiper terminal, equivalent to the movable

terminal of a mechanical potentiometer. The position

of the wiper within the array is determined by the

control inputs. The wiper terminal series resistance is

typically 40Ω.

Up/Down (U/D)

The U/D input controls the direction of the wiper

movement and whether the counter is incremented or

decremented.

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.

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 X9C102/

103/104/503 will be placed in the low power standby

mode until the device is selected once again.

PIN CONFIGURATION

PIN NAMES

Symbol Description

VHHigh Terminal

VWWiper Terminal

VLLow Terminal

VSS Ground

VCC Supply Voltage

U/DUp/Down Input

INC Increment Input

CS Chip Select Input

NC No Connect 3863 PGM T01

VCC

3863 FHD F02.2

INC

U/D

VSS

X9C102/

103/104/503

DIP/SOIC

X9C102/103/104/503

DEVICE OPERATION

There are three sections of the X9C102/103/104/503:

the input control, counter and decode section; the non-

volatile memory; and the resistor array. The input control

section operates just like an up/down counter. The

output of this counter is decoded to turn on a single

electronic switch connecting a point on the resistor array

to the wiper output. Under the proper conditions the

contents of the counter can be stored in nonvolatile

memory and retained for future use. The resistor array

is comprised of 99 individual resistors connected in

series. At either end of the array and between each

resistor is an electronic switch that transfers the

potential at that point to the wiper.

The INC, U/D and CS inputs control the movement of the

wiper along the resistor array. With CS set LOW the

X9C102/103/104/503 is selected and enabled to

respond to the U/D and INC inputs. HIGH to LOW

transitions on INC will increment or decrement

(depending on the state of the U/D input) a seven-bit

counter. The output of this counter is decoded to

select one of one-hundred wiper positions along the

resistive array.

The wiper, when at either fixed terminal, acts like its

mechanical equivalent and does not move beyond the

last position. That is, the counter does not wrap around

when clocked to either extreme.

The value of the counter is stored in nonvolatile memory

whenever CS transistions HIGH while the INC input is

also HIGH.

When the X9C102/103/104/503 is powered-down, the

last counter position stored will be maintained in the

nonvolatile memory. When power is restored, the con-

tents of the memory are recalled and the counter is reset

to the value last stored.

OPERATION NOTES

The system may select the X9C102/103/104/503, move

the wiper, and deselect the device without having to

store the latest wiper, position in nonvolatile memory.

The wiper movement is performed as described above;

once the new position is reached, the system would the

keep INC LOW while taking CS HIGH. The new wiper

position would be maintained until changed by the

system or until a power-down/up cycle recalled the

previously stored data.

This would allow the system to always power-up to a

preset value stored in nonvolatile memory; then during

system operation minor adjustments could be made.

The adjustments might be based on user preference:

system parameter changes due to temperature drift,

etc...

The state of U/D may be changed while CS remains

LOW. This allows the host system to enable the

X9C102/103/104/503 and then move the wiper up and

down until the proper trim is attained.

TIW/RTOTAL

The electronic switches on the X9C102/103/104/503

operate in a “make before break” mode when the wiper

changes tap positions. If the wiper is moved several

positions, multiple taps are connected to the wiper for

tIW (INC to VW change). The RTOTAL value for the device

can temporarily be reduced by a significant amount

if the wiper is moved several positions.

RTOTAL with VCC Removed

The end to end resistance of the array will fluctuate once

VCC is removed.

SYMBOL TABLE

WAVEFORM INPUTS OUTPUTS

Must be

steady Will be

steady

May change

from LOW

to HIGH

Will change

from LOW

to HIGH

May change

from HIGH

to LOW

Will change

from HIGH

to LOW

Don’t Care:

Changes

Allowed

Changing:

State Not

Known

N/A Center Line

is High

Impedance

X9C102/103/104/503

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 VCC

with Respect to VSS ...............................–1V to +7V

Voltage on VH and VL

Referenced to VSS .................................–8V to +8V

∆V = |VH–VL|

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

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

Lead Temperature (Soldering, 10 seconds).... +300°C

Wiper Current.....................................................±1mA

*COMMENT

Stresses above those listed under “Absolute Maximum

Ratings” may cause permanent damage to the device.

This is a stress rating only and the functional operation

of the device at these or any other conditions above

those listed in the operational sections of this specifica-

tion is not implied. Exposure to absolute maximum

rating conditions for extended periods may affect device

reliability.

ANALOG CHARACTERISTICS

Electrical Characteristics

End-to-End Resistance Tolerance ..................... ±20%

Power Rating at 25°C

X9C102.......................................................16mW

X9C103, X9C503, and X9C104..................10mW

Wiper Current............................................ ±1mA Max.

Typical Wiper Resistance......................... 40Ω at 1mA

Typical Noise..........................< –120dB/ Hz Ref: 1V

Resolution

Resistance ............................................................. 1%

Linearity

Absolute Linearity(1) ........................................ ±1.0 Ml(2)

Relative Linearity(3)..................................... ±0.2 Ml(2)

Temperature Coefficient

(–40°C to +85°C)

X9C102 ......................................+600 ppm/°C Typical

X9C103, X9C503, X9C104 ........+300 ppm/°C Typical

Ratiometric Temperature Coefficient ............ ±20 ppm

Wiper Adjustability

Unlimited Wiper Adjustment (Non-Store operation)

Wiper Position Store Operations ...................10,000

Data Changes

Physical Characteristics

Marking Includes

Manufacturer‘s Trademark

Resistance Value or Code

Date Code

Test Circuit #1 Test Circuit #2

3863 FHD F04 3863 FHD F05

FORCE

CURRENT

VHTEST POINT

TEST POINT

Notes: (1) Absolute Linearity is utilized to determine actual wiper voltage versus expected voltage

= (Vw(n)(actual) – Vw(n)(expected)) = ±1 Ml Maximum.

(2) 1 Ml = Minimum Increment = RTOT/99.

(3) Relative Linearity is a measure of the error in step size between taps = VW(n+1) – [Vw(n) + Ml] = +0.2 Ml.

X9C102/103/104/503

RECOMMENDED OPERATING CONDITIONS

Temperature Min. Max.

Commercial 0°C +70°C

Industrial –40°C +85°C

Military –55°C +125°C

3863 PGM T03.1

Supply Voltage Limits

X9C102/103/104/503 5V ±10%

D.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified.)

Limits

Symbol Parameter Min. Typ.(4) Max. Units Test Conditions

ICC VCC Active Current 1 3 mA CS = VIL, U/D = VIL or VIH and

INC = 0.4V to 2.4V @ max. tCYC

ISB Standby Supply Current 200 500 µACS = VCC – 0.3V, U/D and INC =

VSS or VCC – 0.3V

ILI CS, INC, U/D Input ±10 µAV

IN = VSS to VCC

Leakage Current

VIH CS, INC, U/D Input 2 VCC + 1 V

HIGH Voltage

VIL CS, INC, U/D Input –1 0.8 V

LOW Voltage

RWWiper Resistence 40 100 ΩMax. Wiper Current ±1mA

VHVH Terminal Voltage –5 +5 V

VLVL Terminal Voltage –5 +5 V

CIN(5) CS, INC, U/D Input 10 pF VCC = 5V, VIN = VSS,

Capacitance TA = 25°C, f = 1MHz 3863 PGM T05.3

STANDARD PARTS

Part Number Maximum Resistance Wiper Increments Minimum Resistance

X9C102 1KΩ10.1Ω40Ω

X9C103 10KΩ101Ω40Ω

X9C503 50KΩ505Ω40Ω

X9C104 100KΩ1010Ω40Ω3863 PGM T08.1

Notes: (4) Typical values are for TA = 25°C and nominal supply voltage.

(5) This parameter is periodically sampled and not 100% tested.

3863 PGM T04.2

X9C102/103/104/503

A.C. CONDITIONS OF TEST

Input Pulse Levels 0V to 3V

Input Rise and Fall Times 10ns

Input Reference Levels 1.5V

3863 PGM T05.1

MODE SELECTION

CS INC U/DMode

L H Wiper Up

L L Wiper Down

H X Store Wiper Position

H X X Standby Current

L X No Store, Return to

Standby 3863 PGM T06

A.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified)

Limits

Symbol Parameter Min. Typ.(6) Max. Units

tCl CS to INC Setup 100 ns

tlD INC HIGH to U/D Change 100 ns

tDI U/D to INC Setup 2.9 µs

tlL INC LOW Period 1 µs

tlH INC HIGH Period 1 µs

tlC INC Inactive to CS Inactive 1 µs

tCPH CS Deselect Time 20 ms

tIW INC to Vw Change 100 500 µs

tCYC INC Cycle Time 4 µs

tR, tF(7) INC Input Rise and Fall Time 500 µs

tPU(7) Power up to Wiper Stable 500 µs

tR VCC(7) VCC Power-up Rate 0.2 50 mV/µs

3863 PGM T07.3

A.C. Timing

3863 FHD F03

INC

U/D

tCI tIL tIH

tCYC

tID tDI

tIW

MI (8)

tIC tCPH

tFtR

10%

90% 90%

Notes: (6) Typical values are for TA = 25°C and nominal supply voltage.

(7) This parameter is periodically sampled and not 100% tested.

(8) MI in the A.C. timing diagram refers to the minimum incremental change in the VW output due to a change in the wiper position.

X9C102/103/104/503

Typical Frequency Response for X9C102

TEST CONDITIONS

VCC = 5V

Temp. = 25°C

Wiper @ Tap 50

VH = 0.5VRMS

Normalized (0dB @ 1KHz)

Test Circuit #1

TEST CONDITIONS

VCC = 5V

Temp. = 25°C

Wiper @ Tap 50

VH = 2VRMS

Test Circuit #1

Typical Total Harmonic Distortion for X9C102

NORMALIZED GAIN (dB)

–3

–6

–9

–12

–15

–18

–21 0.01 0.10 1.00 10.00 100.00 1000.00 10000.00

FREQUENCY IN KHz

THD (%)

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0 0.01 0.10 1.00 10.00 100.00 1000.00 10000.00

FREQUENCY IN KHz

3863 FHD F06

3863 FHD F07

X9C102/103/104/503

Typical Linearity for X9C102

Typical Frequency Response for X9C103

TEST CONDITIONS

VCC = 5V

Temp. = 25°C

Test Circuit #2

TEST CONDITIONS

VCC = 5V

Temp. = 25°C

Wiper @ Tap 50

VH = 0.5VRMS

Normalized (0dB @ 1KHz)

Test Circuit #1

PERCENTAGE ERROR

WIPER POSITION

10 20 30 40 50 60 70 80 90 100

–2

–4

–6

–8

–10

KEY:

= RELATIVE

= ABSOLUTE

0039–9

NORMALIZED GAIN (dB)

–3

–6

–9

–12

–15

–18

–21 0.01 0.10 1.00 10.00 100.00 1000.00

FREQUENCY IN KHz

3863 FHD F08

3863 FHD F09

X9C102/103/104/503

Typical Total Harmonic Distortion for X9C103

Typical Linearity for X9C103

TEST CONDITIONS

VCC = 5V

Temp. = 25°C

Test Circuit #2

TEST CONDITIONS

VCC = 5V

Temp. = 25°C

Wiper @ Tap 50

VH = 2VRMS

Test Circuit #1

THD (%)

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0 0.01 0.10 1.00 10.00 100.00 1000.00

FREQUENCY IN KHz

PERCENTAGE ERROR

WIPER POSITION

10 20 30 40 50 60 70 80 90 100

–2

–4

–6

–8

–10

KEY:

= RELATIVE

= ABSOLUTE

0039–9

3863 FHD F10

3863 FHD F11

X9C102/103/104/503

Typical Frequency Response for X9C503

Typical Total Harmonic Distortion for X9C503

TEST CONDITIONS

VCC = 5V

Temp. = 25°C

Wiper @ Tap 50

VH = 2VRMS

Test Circuit #1

TEST CONDITIONS

VCC = 5V

Temp. = 25°C

Wiper @ Tap 50

VH = 0.5VRMS

Normalized (0dB @ 1 KHz)

Test Circuit #1

-3

-6

-9

-12

-15

-18

-210.01 0.10 1.00 10.00 100.00

FREQUENCY IN KHz

NORMALIZED GAIN (dB)

1000.00

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.00.01 0.10 1.00 10.00 100.00

FREQUENCY IN KHz

THD (%)

1000.00

3863 FHD F12

3863 FHD F13

X9C102/103/104/503

Typical Linearity for X9C503

Typical Frequency Response for X9C104

TEST CONDITIONS

VCC = 5V

Temp. = 25°C

Wiper @ Tap 50

VH = 0.5VRMS

Normalized (0dB @ 1 KHz)

Test Circuit #1

TEST CONDITIONS

VCC = 5V

Temp. = 25°C

Test Circuit #2

-2

-4

-6

-8

-10 0 102030405060708090100

WIPER POSITION

PERCENTAGE ERROR

-3

-6

-9

-12

-15

-18

-210.01 0.10 1.00 10.00 100.00 1000.00

FREQUENCY IN KHz

NORMALIZED GAIN (dB)

KEY:

= RELATIVE

= ABSOLUTE

0039–9

3863 FHD F14

3863 FHD F15

X9C102/103/104/503

Typical Total Harmonic Distortion for X9C104

Typical Linearity for X9C104

TEST CONDITIONS

VCC = 5V

Temp. = 25°C

Wiper @ Tap 50

VH = 2VRMS

Test Circuit #1

TEST CONDITIONS

VCC = 5V

Temp. = 25°C

Test Circuit #2

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.00.01 0.10 1.00 10.00 100.00 10000.00

FREQUENCY IN KHz

THD (%)

1000.00

-2

-4

-6

-8

-10 0 102030405060708090100

WIPER POSITION

PERCENTAGE ERROR

KEY:

= RELATIVE

= ABSOLUTE

0039–9

3863 FHD F16

3863 FHD F17

X9C102/103/104/503

0.020 (0.51)

0.016 (0.41)

0.150 (3.81)

0.125 (3.18)

0.325 (8.25)

0.300 (7.62)

0.110 (2.79)

0.090 (2.29)

0.430 (10.92)

0.360 (9.14)

0.300

(7.62) REF.

PIN 1 INDEX

0.140 (3.56)

0.130 (3.30)

0.020 (0.51)

0.015 (0.38)

3926 FHD F01

PIN 1

SEATING

PLANE

0.062 (1.57)

0.058 (1.47)

0.255 (6.47)

0.245 (6.22)

0.060 (1.52)

0.020 (0.51)

TYP. 0.010 (0.25)

0°

15°

NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)

0.092 (2.34)

DIA. NOM.

HALF SHOULDER WIDTH ON

ALL END PINS OPTIONAL

0.015 (0.38)

MAX.

PACKAGING INFORMATION

8-LEAD PLASTIC DUAL IN-LINE PACKAGE TYPE P

NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)

X9C102/103/104/503

PACKAGING INFORMATION

0.150 (3.80)

0.158 (4.00) 0.228 (5.80)

0.244 (6.20)

0.014 (0.35)

0.019 (0.49)

PIN 1

PIN 1 INDEX

0.010 (0.25)

0.020 (0.50)

0.050 (1.27)

0.188 (4.78)

0.197 (5.00)

0.004 (0.19)

0.010 (0.25)

0.053 (1.35)

0.069 (1.75)

(4X) 7°

0.027 (0.683)

0.037 (0.937)

0.0075 (0.19)

0.010 (0.25)

0° – 8°

X 45°

3926 FHD F22

8-LEAD PLASTIC SMALL OUTLINE GULL WING PACKAGE TYPE S

NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESIS IN MILLIMETERS)

X9C102/103/104/503

LIMITED WARRANTY

Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, Inc. makes no warranty,

express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement.

Xicor, Inc. makes no warranty of merchantability or fitness for any purpose. Xicor, Inc. reserves the right to discontinue production and change specifications and

prices at any time and without notice.

Xicor, Inc. assumes no responsibility for the use of any circuitry other than circuitry embodied in a Xicor, Inc. product. No other circuits, patents, licenses are

implied.

U.S. PATENTS

Xicor products are covered by one or more of the following U.S. Patents: 4,263,664; 4,274,012; 4,300,212; 4,314,265; 4,326,134; 4,393,481; 4,404,475;

4,450,402; 4,486,769; 4,488,060; 4,520,461; 4,533,846; 4,599,706; 4,617,652; 4,668,932; 4,752,912; 4,829, 482; 4,874, 967; 4,883, 976. Foreign patents and

additional patents pending.

LIFE RELATED POLICY

In situations where semiconductor component failure may endanger life, system designers using this product should design the system with appropriate error

detection and correction, redundancy and back-up features to prevent such an occurence.

Xicor's products are not authorized for use in critical components in life support devices or systems.

1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose

failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant

injury to the user.

2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life

support device or system, or to affect its safety or effectiveness.

Temperature Range

Blank = Commercial = 0°C to +70°C

I = Industrial = –40°C to +85°C

M = Military = –55°C to +125°C

Package

P = 8-Lead Plastic DIP

S = 8-Lead SOIC

End to End Resistance

102 = 1KΩ

103 = 10KΩ

503 = 50KΩ

104 = 100KΩ

X9CXXX X X

ORDERING INFORMATION