AD9410SLASHPCB datasheet(9/20 Pages) AD

9 / 20 page

REV. 0

AD9410

–9–

VCC

1.5k

AIN

2.25k

1.5k

2.25k

AIN

Figure 2. Equivalent Analog Input Circuit

VCC

VREFIN

Figure 3. Equivalent Reference Input Circuit

17k

VCC

17k

ENCODE

100

ENCODE

450

Figure 4 Equivalent Encode Input Circuit

VDD

DIGITAL

OUTPUT

Figure 5. Equivalent Digital Output Circuit

Table I. Output Coding (VREF = 2.5 V)

Digital Outputs

Step

AIN–AIN

Offset Binary

Two’s Complement

ORA, ORB

> 0.768

11 1111 1111

01 1111 1111

1023

0.768

11 1111 1111

01 1111 1111

••

•

••

•

513

0.0015

10 0000 0001

00 0000 0001

512

0.0

10 0000 0000

00 0000 0000

511

–0.0015

01 1111 1111

11 1111 1111

••

•

••

•

–0.768

00 0000 0000

10 0000 0000

< –0.768

00 0000 0000

10 0000 0000

VCC

VREFOUT

Figure 6. Equivalent Reference Output Circuit

100k

DFS

VCC

Figure 7. Equivalent DFS Input Circuit

7.5k

300

17.5k

300

VCC

Figure 8. Equivalent DS Input Circuit

7.5k

I/P

300

17.5k

VCC

Figure 9. Equivalent I/P Input Circuit

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