Digital Potentiometers

8

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Pin Description

PIN

NAME

FUNCTION

2

SCL

I

3

SDA

I

4

A0

Address Input. Sets the A0 bit in the device ID address.

5

GND

Ground

6

L

Low Terminal

7

W

Wiper Terminal

8

H

High Terminal

—EP

Exposed Pad. Internally connected to GND. Connect to a large ground plane to maximize thermal

performance. Not intended as an electrical point.

S

Sr

A

PS

SCL

SDA

PARAMETERS ARE MEASURED FROM 30% TO 70%.

Detailed Description

The MAX5417/MAX5418/MAX5419 contain a resistor

array with 255 resistive elements. The MAX5417 has a

total end-to-end resistance of 50kΩ, the MAX5418 has

an end-to-end resistance of 100kΩ, and the MAX5419

has an end-to-end resistance of 200kΩ. The

MAX5417/MAX5418/MAX5419 allow access to the high,

low, and wiper terminals for a standard voltage-divider

configuration. H, L, and W can be connected in any

desired configuration as long as their voltages fall

the wiper among the 256 tap points. A nonvolatile mem-

ory stores the wiper position and recalls the stored wiper

position in the nonvolatile memory upon power-up. The

nonvolatile memory is guaranteed for 50 years for wiper

data retention and up to 200,000 wiper store cycles.

400pF

SDA

Figure 2. Load Circuit