REV. 0

AD7675

–4–

Table I. Serial Clock Timings in Master Read after Convert

DIVSCLK[1]

0011

DIVSCLK[0]

0101

Unit

SYNC to SCLK First Edge Delay Minimum

3

171717ns

Internal SCLK Period Minimum

25

50

100

200

ns

Internal SCLK Period Typical

40

70

140

280

ns

Internal SCLK HIGH Minimum

12

22

50

100

ns

Internal SCLK LOW Minimum

7

214999ns

SDOUT Valid Setup Time Minimum

4

181818ns

SDOUT Valid Hold Time Minimum

2

4

3089ns

SCLK Last Edge to SYNC Delay Minimum

3

60

140

300

ns

Busy High Width Maximum

2

2.5

3.5

5.75

µs

ABSOLUTE MAXIMUM RATINGS

1

Analog Inputs

IN+

. . . . . . . . . . . . . . . . . . . . AVDD + 0.3 V to AGND – 0.3 V

Ground Voltage Differences

AGND, DGND, OGND . . . . . . . . . . . . . . . . . . . . .

±0.3 V

Supply Voltages

AVDD, DVDD, OVDD . . . . . . . . . . . . . . . . . . . . . . . . . 7 V

AVDD to DVDD, AVDD to OVDD . . . . . . . . . . . . . .

±7 V

DVDD to OVDD . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±7 V

Digital Inputs . . . . . . . . . . . . . . . . –0.3 V to DVDD + 0.3 V

Internal Power Dissipation

Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . 150

°C

Storage Temperature Range . . . . . . . . . . . . –65

°C to +150°C

Lead Temperature Range

(Soldering 10 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . 300

°C

NOTES

nent damage to the device. This is a stress rating only; functional operation of the

device at these or any other conditions above those indicated in the operational

section of this specification is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect device reliability.

°C/W,

°C/W.

TO OUTPUT

PIN

500 A

1.6mA

1.4V

IN SERIAL INTERFACE MODES,THE SYNC, SCLK, AND

SDOUT TIMINGS ARE DEFINED WITH A MAXIMUM LOAD

NOTE

1

Figure 1. Load Circuit for Digital Interface Timing, SDOUT,

0.8V

2V

2V

0.8V

t

DELAY

2V

0.8V

t

DELAY

Figure 2. Voltage Reference Levels for Timing

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily

accumulate on the human body and test equipment and can discharge without detection. Although

the AD7675 features proprietary ESD protection circuitry, permanent damage may occur on

devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are

recommended to avoid performance degradation or loss of functionality.

WARNING!

ESD SENSITIVE DEVICE

ORDERING GUIDE

Package

Model

Temperature Range

Package Description

Option

AD7675AST

–40

°C to +85°C

Quad Flatpack (LQFP)

ST-48

AD7675ASTRL

–40

°C to +85°C

Quad Flatpack (LQFP)

ST-48

EVAL-AD7675CB

1

Evaluation Board

EVAL-CONTROL BRD2

2

Controller Board

NOTES

demonstration purposes.