LTC1450LIN datasheet(12/16 Pages) LINER

tên linh kiện	LTC1450LIN

Giải thích chi tiết về linh kiện	Parallel Input, 12-Bit Rail-to-Rail Micropower DACs in SSOP

PDF	16 Pages

Scroll/Zoom	100%

nhà sản xuất	LINER [Linear Technology]

Trang chủ	http://www.linear.com

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12 / 16 page

LTC1450/LTC1450L

TYPICAL APPLICATIONS N

Bipolar Output 12-Bit DAC

LTC1450

VOUT

VDAC

VREF

DATA (0:11)

CSLSB

CSMSB

LDAC

CLR

VCC

REFOUT

GND

REFHI

20k

IOUT

– 2.048mA TO 2.047mA

µA/LSB)

IOUT =

ZOUT =

R1 = R3

R2 = R4 + R5

• 4.096 – VREF

REFLO

X1/X2

DIN

FROM

µP

DATA BUS

FROM

µP AND

DECODE LOGIC

FROM

SYSTEM RESET

VCC

0.1

µF

LTC1450/50L • TA06

–

21.5k

15V

–15V

LT1097

20k

22.6k

1.13k

(R1)(R5)(R3 + R4)

(R2)(R3) – R1(R4 + R5)

DIN

4096

(R1)(R5)

()

2.047mA

– 2.048mA

4095

2048

IOUT

DIN

Digitally Programmable Bilateral Current Source/Sink

LTC1450

VOUT

VDAC

*REFLO IS TIED TO REFOUT AND

REFHI IS TIED TO GND

TYING REFLO TO REFOUT AND REFHI TO GND IN THIS

APPLICATION OVERCOMES THE NEED FOR A PULL-DOWN

RESISTOR ON THE REFOUT PIN. REFOUT SEES A CONSTANT

LOAD TO GND INDEPENDENT OF VOUT

VREF

DATA (0:11)

CSLSB

CSMSB

LDAC

CLR

VCC

REFOUT

GND

REFLO*

10k

VOUT

– 2.048V TO 2.047V

(1mV/LSB)

VOUT = 2.048 +

4.096

REFHI*

X1/X2

DIN

FROM

µP

DATA BUS

FROM

µP AND

DECODE LOGIC

FROM

SYSTEM RESET

0.1

µF

LTC1450/50L • TA05

–

10k

DIN – 4096

4096

–5V

®1097

10k

()

2.047V

– 2.048V

4095

2048

VOUT

DIN

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