Dual, 256-Tap, Nonvolatile, SPI-Interface,

Linear-Taper Digital Potentiometers

4

_______________________________________________________________________________________

is unloaded and measured with an ideal voltmeter.

+5V, the wiper terminal is driven with a source current of 400µA for the 10k

Ω configuration, 80µA for the 50kΩ configuration,

and 40µA for the 100k

configuration, 40µA for the 50k

Ω configuration, and 20µA for the 100kΩ configuration.

0.5V). See Supply Current vs. Digital Input Voltage in the

Typical Operating Characteristics section.

Note 6: Wiper at midscale with a 10pF load.

the wiper terminal is unloaded and measured with a 10pF oscilloscope probe (see Tap-to-Tap Switching Transient in the

Typical Operating Characteristics section).

Note 8: Digital timing is guaranteed by design and characterization, and is not production tested.

DC ELECTRICAL CHARACTERISTICS (continued)

°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

POWER SUPPLIES

Power-Supply Voltage

2.70

5.25

V

Supply Current

During write cycle only, digital inputs =

400

µA

Standby Current

0.5

1

µA

H

L

W

VOLTAGE-DIVIDER

CONFIGURATION

VARIABLE-RESISTOR

CONFIGURATION

H

L

Figure 1. Voltage-Divider/Variable-Resistor Configurations