AD6645(Rev0) Ver la hoja de datos (PDF) - Analog Devices

Número de pieza

componentes Descripción

Lista de partido

AD6645
(Rev.:Rev0)

14-Bit, 80 MSPS A/D Converter

Analog Devices 

AD6645

PIN CONFIGURATION

52 51 50 49 48 47 46 45 44 43 42 41 40

DVCC 1

GND 2

VREF 3

GND 4

ENC 5

ENC 6

GND 7

AVCC 8

AVCC 9

GND 10

AIN 11

AIN 12

GND 13

PIN 1

IDENTIFIER

AD6645

TOP VIEW

(Not to Scale)

39 D3

38 D2

37 D1

36 D0 (LSB)

35 DMID

34 GND

33 DVCC

32 OVR

31 DNC

30 AVCC

29 GND

28 AVCC

27 GND

14 15 16 17 18 19 20 21 22 23 24 25 26

DNC = DO NOT CONNECT

PIN FUNCTION DESCRIPTIONS

Pin No.

Mnemonic

Function

1, 33, 43

2, 4, 7, 10, 13,

15, 17, 19, 21,

23, 25, 27, 29,

34, 42

DVCC

GND

3.3 V Power Supply (Digital) Output Stage Only

Ground

3

VREF

2.4 V Reference. Bypass to ground with a 0.1 mF microwave chip capacitor.

5

ENC

Encode Input. Conversion initiated on rising edge.

6

ENC

Complement of ENC, Differential Input

8, 9, 14, 16, 18, AVCC

22, 26, 28, 30

5 V Analog Power Supply

11

AIN

12

AIN

Analog Input

Complement of AIN, Differential Analog Input

20

C1

Internal Voltage Reference. Bypass to ground with a 0.1 mF chip capacitor.

24

C2

Internal Voltage Reference. Bypass to ground with a 0.1 mF chip capacitor.

31

DNC

Do not connect this pin.

32

OVR*

Over-Range Bit. A logic-level high indicates analog input exceeds ± FS.

35

DMID

Output Data Voltage Midpoint. Approximately equal to (DVCC)/2.

36

D0 (LSB)

Digital Output Bit (Least Significant Bit); Two’s Complement

37–41, 44–50 D1–D5, D6–D12 Digital Output Bits in Two’s Complement

51

D13 (MSB)

Digital Output Bit (Most Significant Bit); Two’s Complement

52

DRY

DataReady Output

*The functionality of the Over-Range bit is specified for a temperature range of 25∞C to 85∞C only.

–6–

REV. 0

Share Link: