CAT523 datasheet(9/15 Pages) ONSEMI

Part #	CAT523

Description	Dual Digitally Programmable Potentiometer (DPP?? with 256 Taps and Microwire Interface

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Manufacturer	ONSEMI [ON Semiconductor]

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9 / 15 page

Not Recommended for New Design

CAT523

9

Doc. No. MD-2005 Rev. I

Characteristics subject to change without notice

APPLICATION CIRCUITS

CAT523

GND

VDD

VREFH

VREFL

CONTROL

& DATA

OP 07

V

=

(

) - V

OUT

RF

R +

I

-15V

+15V

+5V

RI

I

RF

VDPP

For R =

I RF

V

= 2V

- V

OUT

I

DPP

VI

RI

RF

VOUT

DPP INPUT

DPP OUTPUT

ANALOG OUTPUT

MSB

LSB

1111

1000

0000

0111

1111

0000

0001

0000

REF

V

990

.

0

=

V

01

.

0

+

V

98

.

0

×

255

REF

V

502

.

0

=

V

01

.

0

+

V

98

.

0

×

255

128

REF

V

498

.

0

=

V

01

.

0

+

V

98

.

0

×

255

127

REF

V

014

.

0

=

V

01

.

0

+

V

98

.

0

×

255

1

REF

V

010

.

0

=

V

01

.

0

+

V

98

.

0

×

255

0

V

90

.

4

+

=

V

OUT

V

02

.

0

+

=

V

OUT

V

02

.

-0

=

V

OUT

V

86

.

4

-

=

V

OUT

V

90

.

4

-

=

V

OUT

DPP

255

CODE

=

V

REF

FS

V

99

.

0

=

V

REF

ZERO

V

01

.

0

=

V

5

=

V

REF

F

I

R

=

R

x (VFS - VZERO) + VZERO

VDPP

Bipolar DPP Output

Amplified DPP Output

Digitally Trimmed Voltage Reference

Digitally Controlled Voltage Reference

CAT523

GND

VDD

VREFH

VREF = 5.00V

I > 2mA

LT 1029

V+

VREFL

CONTROL

& DATA

CAT523

GND

VDD

VREFH

VREFL

CONTROL

& DATA

OP 07

-15V

+15V

+5V

RI

RF

VOUT

VOUT = (1 +

) VDPP

RF

RI

+

–

LM 324

CAT523

GND

VDD

VREFH 5.1V

1N5231B

10µF

35V

10kΩ

28 ÷ 32V

OUTPUT

MPT3055EL

0 - 25V

@ 1A

4.02kΩ

15kΩ

1.00kΩ

VREFL

CONTROL

& DATA

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CAT523 Datasheet(PDF) 9 Page - ON Semiconductor

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