AD9225 查看數據表（PDF） - Analog Devices

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AD9225

Complete 12-Bit, 25 MSPS Monolithic A/D Converter

Analog Devices 

AD9225

ABSOLUTE MAXIMUM RATINGS*

Pin Name

With

Respect to

Min

Max

Unit

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

Storage Temperature

Lead Temperature (10 sec)

150

∞C

–65

+150

∞C

300

∞C

*Stresses above those listed under Absolute Maximum Ratings may cause permanent 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.

ANALOG

INPUT

INPUT

CLOCK

DATA

OUTPUT

S1

S2

tC

tCH

tCL

S4

S3

Figure 1. Timing Diagram

tOD

DATA 1

PIN CONFIGURATION

28-Lead SOIC and SSOP

CLK 1

28 DRVDD

(LSB) BIT 12 2

27 DRVSS

BIT 11 3

26 AVDD

BIT 10 4

25 AVSS

BIT 9 5

24 VINB

BIT 8 6 AD9225 23 VINA

BIT 7 7 TOP VIEW 22 CML

BIT 6 8 (Not to Scale) 21 CAPT

BIT 5 9

20 CAPB

BIT 4 10

19 REFCOM

BIT 3 11

18 VREF

BIT 2 12

17 SENSE

(MSB) BIT 1 13

16 AVSS

OTR 14

15 AVDD

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

AD9225 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.

–4–

Rev. C

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