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AD7779ACPZ 데이터시트(PDF) 16 Page - Analog Devices

부품명 AD7779ACPZ
상세설명  8-Channel, 24-Bit, Simultaneous Sampling ADC
PDF  101 Pages
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제조업체  AD [Analog Devices]
홈페이지  http://www.analog.com
Logo AD - Analog Devices

AD7779ACPZ 데이터시트(HTML) 16 Page - Analog Devices

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Data Sheet
AD7779
Rev. A | Page 15 of 100
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
AD7779
TOP VIEW
(Not to Scale)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
AIN0–
AIN0+
AIN1–
AIN1+
AVSS1A
AVDD1A
REF1–
REF1+
AIN2–
AIN2+
AIN3–
AIN3+
MODE0/GPIO0
MODE1/GPIO1
MODE2/GPIO2
MODE3/ALERT
NOTES
1. EXPOSED PAD. CONNECT THE EXPOSED PAD TO AVSSx.
AIN4–
AIN4+
AIN5–
AIN5+
AVSS1B
AVDD1B
REF2–
REF2+
AIN6–
AIN6+
AIN7–
AIN7+
RESET
SYNC_IN
SYNC_OUT
START
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
Figure 7. Pin Configuration
Table 9. Pin Function Descriptions
Pin No.
Mnemonic
Type
Direction
Description
1
AIN0−
Analog input
Input
Analog Input Channel 0, Negative.
2
AIN0+
Analog input
Input
Analog Input Channel 0, Positive.
3
AIN1−
Analog input
Input
Analog Input Channel 1, Negative.
4
AIN1+
Analog input
Input
Analog Input Channel 1, Positive.
5
AVSS1A
Supply
Supply
Negative Front-End Analog Supply for Channel 0 to Channel 3, Typical at −1.65V
(Dual Supply) and AGND (Single Supply). Connect all the AVSSx pins to the
same potential.
6
AVDD1A
Supply
Supply
Positive Front-End Analog Supply for Channel 0 to Channel 3, Typical at
AVSSx + 3.3 V. Connect this pin to AVDD1B.
7
REF1−
Reference
Input
Negative Reference Input 1 for Channel 0 to Channel 3, Typical at AVSSx.
Connect all the REFx− pins to the same potential.
8
REF1+
Reference
Input
Positive Reference Input 1 for Channel 0 to Channel 3, Typical at REF1− + 2.5 V.
9
AIN2−
Analog input
Input
Analog Input Channel 2, Negative.
10
AIN2+
Analog input
Input
Analog Input Channel 2, Positive.
11
AIN3−
Analog input
Input
Analog Input Channel 3, Negative.
12
AIN3+
Analog input
Input
Analog Input Channel 3, Positive.
13
MODE0/GPIO0
Digital I/O
I/O
Mode 0 Input Pin in Pin Control Mode (MODE0). See Table 18 for more details.
Configurable General-Purpose Input/Output 0 in SPI Control Mode (GPIO0).
If not in use, connect this pin to DGND or IOVDD.
14
MODE1/GPIO1
Digital I/O
I/O
Mode 1 Input Pin in Pin Control Mode (MODE1). See Table 18 for more details.
Configurable General-Purpose Input/Output 1 in SPI Control Mode (GPIO1).
If not in use, connect this pin to DGND or IOVDD.
15
MODE2/GPIO2
Digital I/O
I/O
Mode 2 Input Pin in Pin Control Mode (MODE2). See Table 18 for more details.
Configurable General-Purpose Input/Output 2 in SPI Control Mode (GPIO2).
If not in use, connect this pin to DGND or IOVDD.
16
MODE3/ALERT
Digital I/O
I/O
Mode 3 Input Pin in Pin Control Mode (MODE3). See Table 18 for more details.
Alert Output Pin in SPI Control Mode (ALERT).



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