DDC112

17

SBAS085B

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CLK = 10MHz

CLK = 15MHz

SYMBOL

DESCRIPTION

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

Integration Time (noncontinuous mode)

50

1,000,000

50

1,000,000

µs

A/D Conversion Time (internally controlled)

202.2

134.8

µs

A/D Conversion Reset Time (internally controlled)

13.2

8.8

µs

Integrator and A/D Conversion Reset Time

37.8

25.2

µs

(internally controlled)

Total A/D Conversion and Rest Time

910.8

607.2

µs

(internally controlled)

Release Time

24

24

µs

FIGURE 14. Conversion Detail for the Internal Operation of the Non-Continuous Mode with Side A Integrated First.

t

12

T

INT

T

INT

t

16

t

12

t

13

t

15

t

17

Release

State

End Integration Side A

Start Integration Side B

End Integration Side B

Wait State

Side A

Data Ready

Side B

Data Ready

Start Integration Side A

Start Integration Side A

CONV

A/D Conversion

Input 1

A/D Conversion

Input 2

DVALID

t

12

T

INT

T

INT

t

16

t

12

t

13

t

15

t

17

CONV

A/D Conversion

Input 1

A/D Conversion

Input 2

DVALID

Release

State

End Integration Side B

Start Integration Side A

End Integration Side A

Wait State

Side B

Data Ready

Side A

Data Ready

Start Integration Side B

Start Integration Side B

FIGURE 15. Internal Operation Timing Diagram of the Non-Continuous Mode with Side B Integrated First.

TABLE VII. Internal Timing for the DDC112 in the Non-Continuous Mode.