AD676

REV. A

–4–

TIMING SPECIFICATIONS

Parameter

Symbol

Min

Typ

Max

Units

Conversion Time

2

10

1000

µs

CLK Period

3

480

ns

Calibration Time

85,530

2

µs

CAL to BUSY Delay

75

150

ns

BUSY to SAMPLE Delay

2

µs

SAMPLE to BUSY Delay

15

100

ns

CLK HIGH

4

50

ns

CLK LOW

4

50

ns

SAMPLE LOW to 1st CLK Delay

50

ns

SAMPLE LOW

100

ns

Output Delay

125

200

ns

Status Delay

50

ns

CAL HIGH Time

50

ns

NOTES

internal sample/hold function. Longer conversion times may degrade performance. See “General Conversion Guidelines” for additional explanation of maximum con-

version time.

CAL

BUSY

CLK

t

CH

t

CL

t

CLK

t

OD

t

CT

CALH

t

Figure 1. Calibration Timing

SAMPLE

(INPUT)

CLK

(INPUT)

BIT 1 – BIT 16

(OUTPUTS)

BUSY

(OUTPUT)

1

234

5

t

S

t

SL

t

SC

t

CLK

t

CL

t

CH

t

OD

t

SD

t

SB

t

BS

t

C

13

14

15

16

17

(PREVIOUS CONVERSION)

(NEW DATA)

Figure 2a. General Conversion Timing

SAMPLE

(INPUT)

CLK

(INPUT)

BIT 1 – BIT 16

(OUTPUTS)

BUSY

(OUTPUT)

1

234

5

t

S

t

SL

t

SC

t

CLK

t

CL

t

CH

t

OD

t

SD

t

SB

t

BS

t

C

13

14

15

16

17

t

S

(PREVIOUS CONVERSION)

(NEW DATA)

Figure 2b. Continuous Conversion Timing

1