LTC7545 查看數據表（PDF） - Linear Technology

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LTC7545

Improved Industry Standard Parallel 12-Bit Multiplying DAC

Linear Technology 

TYPICAL APPLICATIONS N

Unipolar Operation (2-Quadrant Multiplication)

VREF

–10V TO 10V

5V OR 15V

0.1µF

18 19 20

VDD VREF RFB

µP

17 WR

16

CS

1

LTC7545A OUT1

2

AGND

DB11 to DB0 DGND

4–15

3

33pF

–

LT1097

+

LTC7545A

VOUT

0V TO – VREF

7545A TA03

Table 1. Unipolar Binary Code Table

DIGITAL INPUT

BINARY NUMBER

IN DAC LATCH

MSB

LSB

ANALOG OUTPUT

VOUT

1111 1111

1000 0000

0000 0000

0000 0000

1111

0000

0001

0000

– VREF (4095/4096)

– VREF (2048/4096) = – VREF/2

– VREF (1/4096)

0V

5

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