AD9245(RevE) Просмотр технического описания (PDF) - Analog Devices

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AD9245
(Rev.:RevE)

14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 3 V A/D Converter

Analog Devices 

Data Sheet

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

AD9245

DNC 1

CLK 2

DNC 3

PDWN 4

(LSB) D0 5

D1 6

D2 7

D3 8

AD9245

TOP VIEW

(Not to Scale)

24 VREF

23 SENSE

22 MODE

21 OTR

20 D13 (MSB)

19 D12

18 D11

17 D10

NOTES

1. DNC = DO NOT CONNECT. DO NOT CONNECT TO THIS PIN.

2. IT IS RECOMMENDED THAT THE EXPOSED PADDLE BE SOLDERED TO THE GROUND PLANE

FOR THE LFCSP PACKAGE. THERE IS AN INCREASED RELIABILITY OF THE SOLDER JOINTS,

AND THE MAXIMUM THERMAL CAPABILITY OF THE PACKAGE IS ACHIEVED WITH THE

EXPOSED PADDLE SOLDERED TO THE CUSTOMER BOARD.

Figure 3. LFCSP Pin Configuration

Table 9. Pin Function Descriptions

Pin No.

Mnemonic

1, 3

DNC

2

CLK

4

PDWN

5 to 14, 17 to 20

D0 (LSB) to D13 (MSB)

15

DGND

16

DRVDD

21

OTR

22

MODE

23

SENSE

24

VREF

25

REFB

26

REFT

27, 32

AVDD

28, 31

AGND

29

VIN+

30

VIN–

EPAD

Description

Do Not Connect

Clock Input Pin

Power-Down Function Select

Data Output Bits

Digital Output Ground

Digital Output Driver Supply

Out-of-Range Indicator

Data Format Select and DCS Mode Selection (See Table 11)

Reference Mode Selection (See Table 10)

Voltage Reference Input/Output

Differential Reference (–)

Differential Reference (+)

Analog Power Supply

Analog Ground

Analog Input Pin (+)

Analog Input Pin (–)

Exposed Pad. It is recommended that the exposed paddle be soldered to the ground

plane for the LFCSP package. There is an increased reliability of the solder joints, and

the maximum thermal capability of the package is achieved with the exposed paddle

soldered to the customer board.

Rev. E | Page 11 of 32

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