CAT5411YI-10-T2 datasheet(1/16 Pages) ONSEMI

Part #	CAT5411YI-10-T2

Description	Dual Digitally Programmable Potentiometers (DPP?? with 64 Taps and SPI Interface

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CAT5411

1

Doc. No. MD-2114 Rev. L

Characteristics subject to change without notice

Dual Digitally Programmable Potentiometers (DPP™)

with 64 Taps and SPI Interface

FEATURES

Two linear-taper digitally programmable

potentiometers

64 resistor taps per potentiometer

End to end resistance 2.5 kΩ, 10 kΩ, 50 kΩ or

100 kΩ

Potentiometer control and memory access via

SPI interface: Mode (0, 0) and (1, 1)

Low wiper resistance, typically 80

Nonvolatile memory storage for up to four

wiper settings for each potentiometer

Automatic recall of saved wiper settings at

power up

2.5 to 6.0 volt operation

Standby current less than 1 µA

24-lead SOIC and 24-lead TSSOP

Industrial temperature ranges

PIN CONFIGURATION

SOIC (W)

(top view)

VCC

1

24 NC

RL0

2

23 NC

RH0

3

22 NC

RW0

4

21 NC

CS

¯¯¯

5

20 A0

WP

¯¯¯

6

19 SO

SI

7

18 HOLD

¯¯¯¯¯

A1

8

17 SCK

RL1

9

16 NC

RH1 10

15 NC

RW1 11

14 NC

GND 12

13 NC

CAT

5411

TSSOP (Y)

(top view)

SI

1

24 WP

¯¯¯

A1

2

23

CS

¯¯¯

RL1

3

22 RW0

RH1

4

21 RH0

RW1

5

20 RL0

GND

6

19 VCC

NC

7

18 NC

NC

8

17 NC

NC

9

16 NC

NC 10

15 NC

SCK 11

14 A0

HOLD

¯¯¯¯¯ 12

13 SO

CAT

5411

DESCRIPTION

The

CAT5411

is

two

Digitally

Programmable

Potentiometers (DPPs™) integrated with control logic

and 16 bytes of NVRAM memory. Each DPP consists

of a series of 63 resistive elements connected

between two externally accessible end points. The tap

points between each resistive element are connected

to the wiper outputs with CMOS switches. A separate

6-bit control register (WCR) independently controls

the wiper tap switches for each DPP. Associated with

each wiper control register are four 6-bit non-volatile

memory data registers (DR) used for storing up to four

wiper settings. Writing to the wiper control register or

any of the non-volatile data registers is via a SPI serial

bus. On power-up, the contents of the first data

register (DR0) for each of the two potentiometers is

automatically loaded into its respective wiper control

register.

The CAT5411 can be used as a potentiometer or as a

two terminal, variable resistor. It is intended for circuit

level or system level adjustments in a wide variety of

applications.

FUNCTIONAL DIAGRAM

RW0

RW1

RH0

SO

SI

SCK

A0

A1

RH1

RL0

RL1

NONVOLATILE

DATA

REGISTERS

WIPER

CONTROL

REGISTERS

CONTROL

LOGIC

SPI BUS

INTERFACE

WP

CS

For Ordering Information details, see page 15.

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CAT5411YI-10-T2 Datasheet(PDF) 1 Page - ON Semiconductor

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