AD9241AS 查看數據表（PDF） - Analog Devices

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AD9241AS

Complete 14-Bit, 1.25 MSPS Monolithic A/D Converter

Analog Devices 

AD9241

SWITCHING SPECIFICATIONS (TMIN to TMAX with AVDD = +5 V, DVDD = +5 V, DRVDD = +5 V, CL = 20 pF)

Parameters

Clock Period1

CLOCK Pulse Width High

CLOCK Pulse Width Low

Output Delay

Pipeline Delay (Latency)

Symbol

tC

tCH

tCL

tOD

AD9241

800

360

360

8

13

19

3

Units

ns min

ns min

ns min

ns min

ns typ

ns max

Clock Cycles

NOTES

1The clock period may be extended to 1 ms without degradation in specified performance @ +25 °C.

Specifications subject to change without notice.

S1

S2

ANALOG

INPUT

tC

tCH

tCL

S4

S3

INPUT

CLOCK

DATA

OUTPUT

tOD

DATA 1

Figure 1. Timing Diagram

ABSOLUTE MAXIMUM RATINGS*

THERMAL CHARACTERISTICS

Thermal Resistance

44-Pin MQFP

θJA = 53.2°C/W

θJC = 19°C/W

ORDERING GUIDE

Model

AD9241AS

AD9241EB

Temperature

Range

–40oC to +85oC

Evaluation Board

Package

Description

44-Pin MQFP

Package

Option*

S-44

Parameter

With

Respect

to

Min Max

*S = Metric Quad Flatpack.

Units

AVDD

AVSS –0.3 +6.5

V

DVDD

DVSS –0.3 +6.5

V

AVSS

DVSS –0.3 +0.3

V

AVDD

DVDD –6.5 +6.5

V

DRVDD

DRVSS –0.3 +6.5

V

DRVSS

AVSS –0.3 +0.3

V

REFCOM

AVSS –0.3 +0.3

V

CLK

DVSS –0.3 DVDD + 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

PIN CONNECTION

44 43 42 41 40 39 38 37 36 35 34

DVSS 1

AVSS 2

DVDD 3

AVDD 4

DRVSS 5

DRVDD 6

CLK 7

NC 8

NC 9

NC 10

(LSB) BIT 14 11

PIN 1

IDENTIFIER

AD9241

TOP VIEW

(Not to Scale)

33 REFCOM

32 VREF

31 SENSE

30 NC

29 AVSS

28 AVDD

27 NC

26 NC

25 OTR

24 BIT 1 (MSB)

23 BIT 2

*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 effect device reliability.

12 13 14 15 16 17 18 19 20 21 22

NC = NO CONNECT

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 AD9241 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

–4–

REV. 0

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