REV. A

AD9822

–4–

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 AD9822 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

ABSOLUTE MAXIMUM RATINGS

*

With

Respect

Parameter

To

Min

Max

Unit

VIN, CAPT, CAPB

AVSS

–0.3

AVDD + 0.3

V

Digital Inputs

AVSS

–0.3

AVDD + 0.3

V

AVDD

AVSS

–0.5

+6.5

V

DRVDD

DRVSS

–0.5

+6.5

V

AVSS

DRVSS

–0.3

+0.3

V

Digital Outputs

DRVSS

–0.3

DRVDD + 0.3

V

Junction Temperature

150

Storage Temperature

–65

+150

Lead Temperature

(10 sec)

300

°C

*Stresses above those listed under Absolute Maximum Ratings may cause perma-

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

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

sections of this specification is not implied. Exposure to absolute maximum ratings

for extended periods may affect device reliability.

ORDERING GUIDE

Temperature

Package

Model

Range

Description

AD9822JR

0

°C to 70°C

28-Lead 300 Mil SOIC

AD9822JRS

0

°C to 70°C

28-Lead 5.3 mm SSOP

THERMAL CHARACTERISTICS

Thermal Resistance

28-Lead 300 Mil SOIC

28-Lead 5.3 mm SSOP

θ

°C/W

θ

°C/W

θ

°C/W

θ

°C/W

PIN CONFIGURATION

TOP VIEW

(Not to Scale)

28

27

26

25

24

23

22

21

20

19

18

17

16

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

AD9822

CDSCLK1

AVDD

CDSCLK2

AVSS

ADCCLK

VINR

OEB

OFFSET

DRVDD

VING

DRVSS

CML

(MSB) D7

VINB

D6

CAPT

D5

CAPB

D4

AVSS

D3

AVDD

D2

SLOAD

D1

SCLK

(LSB) D0

SDATA

PIN FUNCTION DESCRIPTIONS

Pin

Name

Type

Description

1

CDSCLK1

DI

CDS Reference Level Sampling

Clock

2

CDSCLK2

DI

CDS Data Level Sampling Clock

3

ADCCLK

DI

A/D Converter Sampling Clock

4

OEB

DI

Output Enable, Active Low

5

DRVDD

P

Digital Output Driver Supply

6

DRVSS

P

Digital Output Driver Ground

7

D7

DO

Data Output MSB. ADC DB13

High Byte, ADC DB5 Low Byte

8

D6

DO

Data Output. ADC DB12 High

Byte, ADC DB4 Low Byte

9

D5

DO

Data Output. ADC DB11 High

Byte, ADC DB3 Low Byte

10

D4

DO

Data Output. ADC DB10 High

Byte, ADC DB2 Low Byte

11

D3

DO

Data Output. ADC DB9 High

Byte, ADC DB1 Low Byte

12

D2

DO

Data Output. ADC DB8 High

Byte, ADC DB0 Low Byte

13

D1

DO

Data Output. ADC DB7 High

Byte, Don’t Care Low Byte

14

D0

DO

Data Output LSB. ADC DB6

High Byte, Don’t Care Low Byte

15

SDATA

DI/DO

Serial Interface Data Input/Output

16

SCLK

DI

Serial Interface Clock Input

17

SLOAD

DI

Serial Interface Load Pulse

18

AVDD

P

5 V Analog Supply

19

AVSS

P

Analog Ground

20

CAPB

AO

ADC Bottom Reference Voltage

Decoupling

21

CAPT

AO

ADC Top Reference Voltage

Decoupling

22

VINB

AI

Analog Input, Blue Channel

23

CML

AO

Internal Bias Level Decoupling

24

VING

AI

Analog Input, Green Channel

25

OFFSET

AO

Clamp Bias Level Decoupling

26

VINR

AI

Analog Input, Red Channel

27

AVSS

P

Analog Ground

28

AVDD

P

5 V Analog Supply

TYPE: AI = Analog Input, AO = Analog Output, DI = Digital Input, DO =

Digital Output, P = Power.