Nonvolatile, 32-Position Digital Potentiometer

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3

Note 1:

All voltages are referenced to ground.

Note 2:

Note 3:

Absolute linearity is used to determine wiper voltage versus expected voltage as determined by wiper position.

Note 4:

Relative linearity is used to determine the change of wiper voltage between two adjacent wiper positions.

Note 5:

The INC low to CS inactive time is the transition time that allows the three control pins to become inactive without writing

the wiper position to the EEPROM.

Note 6:

Wiper storage time is the time required for the wiper position to be written to the EEPROM. During this time, the three-ter-

minal interface is inactive.

Note 7:

Note 8:

Power-up time is specified as the time required before the three control pins become active once a stable power supply

Note 9:

The maximum number of EEPROM write cycles is guaranteed by design and is not tested in production.

AC ELECTRICAL CHARACTERISTICCS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

CS to INC Setup

50

ns

U/D to INC Setup

100

ns

INC Low Period

50

ns

INC High Period

100

ns

INC Inactive to CS Inactive

500

ns

CS Deselect Time

100

ns

Wiper Change to INC Low

200

ns

INC Rise and Fall Times

5µs

INC Low to CS Inactive

(Note 5)

50

ns

Wiper Storage Time

(Note 6)

10

ms

CS Low Pulse

100

ns

Wiper Load Time

(Note 7)

500

µs

Power-Up Time

(Note 8)

2

ms

NONVOLATILE MEMORY CHARACTERISTICS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

EEPROM Write Cycles

+70°C (Note 9)

50,000