AD9224

–4–

REV. A

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 AD9224 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

Pin Name

Respect to

Min

Max

Units

AVDD

AVSS

–0.3

+6.5

V

DRVDD

DRVSS

–0.3

+6.5

V

AVSS

DRVSS

–0.3

+0.3

V

AVDD

DRVDD

–6.5

+6.5

V

REFCOM

AVSS

–0.3

+0.3

V

CLK

AVSS

–0.3

AVDD + 0.3

V

Digital Outputs

DRVSS

–0.3

DRVDD + 0.3

V

VINA, VINB

AVSS

–0.3

AVDD + 0.3

V

VREF

AVSS

–0.3

AVDD + 0.3

V

SENSE

AVSS

–0.3

AVDD + 0.3

V

CAPB, CAPT

AVSS

–0.3

AVDD + 0.3

V

Junction Temperature

+150

°C

Storage Temperature

–65

+150

°C

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 any 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.

DATA 1

DATA

OUTPUT

INPUT

CLOCK

ANALOG

INPUT

S1

S2

S3

S4

Figure 1. Timing Diagram

PIN CONFIGURATION

28-Lead SSOP

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

AD9224

OTR

(MSB) BIT 1

BIT 2

BIT 3

BIT 4

BIT 5

BIT 6

CLK

(LSB) BIT 12

BIT 11

BIT 10

BIT 7

BIT 8

BIT 9

AVDD

AVSS

SENSE

VREF

REFCOM (AVSS)

CAPB

CAPT

DRVDD

DRVSS

AVDD

AVSS

CML

VINA

VINB

PIN FUNCTION DESCRIPTIONS

Pin

Number

Name

Description

1

CLK

Clock Input Pin

2

BIT 12

Least Significant Data Bit (LSB)

3–12

BIT 11–2

Data Output Bit

13

BIT 1

Most Significant Data Bit (MSB)

14

OTR

Out of Range

15, 26

AVDD

+5 V Analog Supply

16, 25

AVSS

Analog Ground

17

SENSE

Reference Select

18

VREF

Input Span Select (Reference I/O)

19

REFCOM

Reference Common

(AVSS)

20

CAPB

Noise Reduction Pin

21

CAPT

Noise Reduction Pin

22

CML

Common-Mode Level (Midsupply)

23

VINA

Analog Input Pin (+)

24

VINB

Analog Input Pin (–)

27

DRVSS

Digital Output Driver Ground

28

DRVDD

+3 V to +5 V Digital Output

Driver Supply

ORDERING GUIDE

Model

Temperature Range

Package Description

Package Option

AD9224ARS

–40

°C to +85°C

28-Lead Shrink Small Outline (SSOP)

RS-28

AD9224-EB

Evaluation Board