beautypg.com

Rainbow Electronics MAX111 User Manual

Page 12

background image

MAX110/MAX111

Low-Cost, 2-Channel, ±14-Bit Serial ADCs

12

______________________________________________________________________________________

OUTPUT

CODE

+OVERFLOW

TRANSITION

-OVERFLOW
TRANSITION

POL OFL D13...D0

0

1

00 . . .000

1

1

00 . . .001

1

1

00 . . .000

1

1

00 . . .010

1

0

11 . . .111

V

REF

-1LSB

INPUT VOLTAGE (LSBs)

- V

REF

0

0

11 . . .111

0

0

11 . . .110

0

0

11 . . .101

0

0

11 . . .100

+OVERFLOW

0

0

00 . . .001

0

0

00 . . .001

0

0

00 . . .000

1

1

11 . . .111

1

1

11 . . .110

1

1

00 . . .011

-OVERFLOW

Figure 4. Differential Transfer Function

OUTPUT

CODE

OVERFLOW

TRANSITION

POL OFL D13...D0

0

1

00 . . .000

0

0

00 . . .001

0

0

00 . . .000

0

0

00 . . .010

1

1

11 . . .111

V

REF

-1LSB

INPUT VOLTAGE (LSBs)

0

1

2

3

0

0

11 . . .111

0

0

11 . . .110

0

0

11 . . .101

0

0

11 . . .100

+OVERFLOW

0

0

00 . . .011

Figure 5. Unipolar Transfer Function