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AD6644ASTZ-40 Fiches technique(PDF) 9 Page - Analog Devices

No de pièce AD6644ASTZ-40
Description  Analog-to-Digital Converter
Download  25 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD6644ASTZ-40 Fiches technique(HTML) 9 Page - Analog Devices

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AD6644
Rev. D | Page 8 of 24
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
DNC = DO NOT CONNECT
PIN 1
IDENTIFIER
AD6644
TOP VIEW
(Not to Scale)
1
DVCC
2
GND
3
VREF
4
GND
5
ENCODE
6
ENCODE
7
GND
8
AVCC
9
AVCC
10
GND
11
14
AIN
12
AIN
13
GND
15 16 17 18 19 20 21 22 23 24 25 26
27
GND
28
AVCC
29
GND
30
AVCC
31
DNC
32
OVR
33
DVCC
34
GND
35
DMID
36
D0 (LSB)
37
40
D1
38
D2
39
D3
41
42
43
44
45
46
47
48
49
50
51
52
Figure 3. Pin Configuration
Table 8. Pin Function Descriptions
Pin Number
Mnemonic
Description
1, 33, 43
DVCC
3.3 V Power Supply (Digital), Output Stage Only.
2, 4, 7, 10, 13, 15, 17, 19, 21, 23, 25, 27, 29,
34, 42
GND
Ground.
3
VREF
2.4 V (Analog Reference). Bypass to ground with 0.1 μF microwave chip
capacitor.
5
ENCODE
Encode Input. Conversion initiated on rising edge.
6
ENCODE
Complement of ENCODE. Differential input.
8, 9, 14, 16, 18, 22, 26, 28, 30
AVCC
5 V Analog Power Supply.
11
AIN
Analog Input.
12
AIN
Complement of AIN. Differential analog input.
20
C1
Internal Voltage Reference. Bypass to ground with 0.1 μF microwave chip
capacitor.
24
C2
Internal Voltage Reference. Bypass to ground with 0.1 μF microwave chip
capacitor.
31
DNC
Do not connect this pin.
32
OVR
Overrange Bit. 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). Twos complement.
37 to 41, 44 to 50
D1 to D5, D6 to
D12
Digital Output Bits in Twos Complement.
51
D13 (MSB)
Digital Output Bit (Most Significant Bit). Twos complement.
52
DRY
Data Ready Output.


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