LTC7543K View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC7543K

Improved Industry Standard Serial 12-Bit Multiplying DACs

Linear Technology 

LTC7543/LTC8143

TYPICAL APPLICATIONS

Bipolar Operation (4-Quadrant Multiplication)

VREF

–10V TO 10V

5V

0.1µF

(LOGIC INPUTS

OMITTED FOR

CLARITY)

14

VDD

DGND

12

15

VREF

16

RFB

LTC7543

LTC8143

OUT 1 1

OUT 2

2

AGND

3

33pF

–

1/2

+LT1112

R2

20k

R1

10k

R3

20k

–

1/2

+LT 1112

VOUT

7543/8143 TA04

Bipolar Offset Binary Code Table

DIGITAL INPUT

BINARY NUMBER IN

DAC REGISTER

MSB

LSB

1111 1111 1111

1000 0000 0001

1000 0000 0000

0111 1111 1111

0000 0000 0000

ANALOG OUTPUT

VOUT

VREF (2047/2048)

VREF (1/2048)

0V

– VREF (1/2048)

– VREF (2048/2048) = – VREF

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

7

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