CAT522WI Ver la hoja de datos (PDF) - ON Semiconductor

Número de pieza

componentes Descripción

Fabricante

CAT522WI

Configured Digitally Programmable Potentiometer (DPP™): Programmable Voltage Applications

ON Semiconductor 

CAT522

Not Recommended for New Design

+5V

VDD

VREF

VREFH

FINE ADJUST

DPP

127RC

CAT522

COARSE ADJUST

DPP

GND

VREFL

RC

VOFFSET

+V

+

–

VREF

RC = 256 x 1µA

Fine adjust gives ±1 LSB change in VOFFSET

when VOFFSET = VREF/2

Coarse-Fine Offset Control by Averaging DPP

Outputs for Single Power Supply Systems

+5V

2.2kΩ

VDD

4.7µF

VREFH

CONTROL

& DATA

DPP1

CAT522

+5V

10kΩ

+5V

VDD

+VREF

VREFH

FINE ADJUST

DPP

127RC

CAT522

COARSE ADJUST

RC

DPP

GND

VREFL

R0

-VREF

RC =

(+VREF) - (VOFFSET+)

1µA

(-VREF) + (VOFFSET+)

R0 =

1µA

VOFFSET

+V

+

–

-V

Coarse-Fine Offset Control by Averaging DPP

Outputs for Dual Power Supply Systems

LM385-2.5

+15V

+

–

10kΩ

ISINK = 2 - 255mA

2N7000

39Ω 1W

39Ω 1W

1mA steps

DPP2

GND

VREFL

5MΩ

+

–

5MΩ

2N7000

3.9kΩ

5µA steps

10kΩ

10kΩ

–

+

TIP30

Doc. No. MD-2004 Rev. I

-15V

Current Sink with 4 Decades of Resolution

10

© 2008 SCILLC. All rights reserved.

Characteristics subject to change without notice

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