AD7861 查看數據表（PDF） - Analog Devices
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AD7861 Datasheet PDF : 6 Pages
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AD7861
PIN DESCRIPTION
Pin Mnemonic Type
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33–34
35
36
37
38–39
40
41
42
43
44
AUX0
REFIN
AGND
REFOUT
S0
S1
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
DGND
DGND
VDD
M0
M1
CONVST
CS
RD
RESET
A1
A0
NC
BUSY
CLK
DGND
SGND
VDD
VIN1
NC
VIN2
VIN3
AUX3
AUX2
AUX1
I/P
I/P
GND
O/P
I/P
I/P
O/P
O/P
O/P
O/P
O/P
O/P
O/P
O/P
O/P
O/P
O/P
O/P
GND
GND
SUP
I/P
I/P
I/P
I/P
I/P
I/P
I/P
I/P
NC
O/P
I/P
GND
GND
SUP
I/P
NC
I/P
I/P
I/P
I/P
I/P
Description
Auxiliary Input 0
Analog Reference Input
Analog Ground
Internal 2.5 Analog Reference
Aux Channel Select 0
Aux Channel Select 1
Data Bit 0 LSB (Tied Low)
Data Bit 1
Data Bit 2
Data Bit 3
Data Bit 4
Data Bit 5
Data Bit 6
Data Bit 7
Data Bit 8
Data Bit 9
Data Bit 10
Data Bit 11, MSB
Logic Ground
Logic Ground
+5 V Digital Supply
Conversion Mode Select 0
Conversion Mode Select 1
A/D Conversion Start
Chip Select
Read Input
Chip Reset
Register Address Select 1
Register Address Select 0
No Connect
Busy, Conversion in Process
External Clock Input 6.25 MHz-12.5 MHz
Logic Ground
Signal Ground
+5 V Analog Supply
Analog Input 1
No Connect
Analog Input 2
Analog Input 3
Auxiliary Input 3
Auxiliary Input 2
Auxiliary Input 1
PIN CONFIGURATION
6 5 4 3 2 1 44 43 42 41 40
D0 7
D1 8
D2 9
D3 10
D4 11
D5 12
D6 13
D7 14
D8 15
D9 16
D10 17
PIN 1
IDENTIFIER
AD7861
TOP VIEW
(Not to Scale)
39 NC
38 NC
37 VIN1
36 VDD
35 SGND
34 DGND
33 DGND
32 CLK
31 BUSY
30 NC
29 A0
18 19 20 21 22 23 24 25 26 27 28
NC = NO CONNECT
Pin Types
I/P = Input Pin
O/P = Output Pin
Pin Types
GND = Ground Pin
SUP = Supply Pin
–4–
REV. B
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