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參數(shù)資料
| 型號： | ADC0808CJ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | ADC |
| 英文描述： | 8-Bit uP Compatible A/D Converters with 8-Channel Multiplexer |
| 中文描述： | 8-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, CDIP28 |
| 封裝： | CERAMIC, DIP-28 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 169K |
| 代理商： | ADC0808CJ |
ML2258
2
PIN CONFIGURATION
ML2258
28-Pin DIP (P28)
ML2258
28-Pin PCC (Q28)
IN3
IN4
IN5
IN6
IN7
START
EOC
DB3
OE
CLK
V
CC
+V
REF
GND
DB1
IN2
IN1
IN0
ADDR0
ADDR1
ADDR2
ALE
DB7
DB6
DB5
DB4
DB0
–V
REF
DB2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
TOP VIEW
PIN DESCRIPTION
PIN# NAME
FUNCTION
1
IN3
Analog input 3.
2
IN4
Analog input 4.
3
IN5
Analog input 5.
4
IN6
Analog input 6.
5
IN7
Analog input 7.
6
START
Start of conversion. Active high digital
input pulse initiates conversion.
7
EOC
End of conversion. This output goes
low after a START pulse occurs, stays
low for the entire A/D conversion, and
goes high after conversion is
completed. Data on DB0–DB7 is valid
on rising edge of EOC and stays valid
until next EOC rising edge.
8
DB3
Data output 3.
9
OE
Output enable input. When OE = 0,
DB0–DB7 are in high impedance
state; OE = 1, DB0–DB7 are active
outputs.
10
CLK
Clock. Clock input provides timing for
A/D converter, S/H, and digital
interface.
11
V
CC
+V
REF
Positive supply. 5V ± 10%.
12
Positive reference voltage.
PIN# NAME
FUNCTION
13
GND
Ground. 0V, all analog and digital
inputs or outputs are reference to this
point.
14
DB1
Data output 1.
15
DB2
Data output 2.
16
–V
REF
DB0
Negative reference voltage.
17
Data output 0.
18
DB4
Data output 4.
19
DB5
Data output 5.
20
DB6
Data output 6.
21
DB7
Data output 7.
22
ALE
Address latch enable. Input to latch in
the digital address (ADDR2–0) on the
rising edge of the multiplexer.
23
ADDR0
Address input 0 to multiplexer. Digital
input for selecting analog input.
24
ADDR1
Address input 1 to multiplexer. Digital
input for selecting analog input.
25
ADDR2
Address input 2 to multiplexer. Digital
input for selecting analog input.
26
IN0
Analog input 0.
27
IN1
Analog input 1.
28
IN2
Analog input 2.
ADDR0
ADDR1
ADDR2
ALE
DB7
DB6
DB5
IN7
START
EOC
DB3
OE
CLK
V
CC
12
13
14
15
16
I
I
I
I
I
I
I
+
R
G
D
D
–
R
D
D
17
18
5
6
7
8
9
10
11
4
3
2
1
28
25
24
23
22
21
20
19
27
26
TOP VIEW
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