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參數(shù)資料
| 型號(hào)： | ISO809 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Isolated 16-Bit Sampling Analog-To-Digital Converter(隔離的16位采樣A\D轉(zhuǎn)換器) |
| 中文描述： | 隔離16位采樣模擬到數(shù)字轉(zhuǎn)換器（隔離的16位采樣阿\\?轉(zhuǎn)換器） |
| 文件頁(yè)數(shù)： | 4/7頁(yè) |
| 文件大?。?/td> | 155K |
| 代理商： | ISO809 |
4
ISO809
SYMBOL
DESCRIPTION
MIN
TYP
MAX UNITS
t
1
Convert Pulse Width
40
4500
ns
t
2
BUSY Delay
120
ns
t
3
t
4
BUSY LOW
8
μ
s
BUSY Delay after
End of Conversion
220
ns
t
5
Aperture Delay
40
ns
t
6
Conversion Time
5.7
8
μ
s
t
7
Acquisition Time
2
μ
s
t
6
+ t
7
Throughput Time
9
10
μ
s
t
8
R/C LOW to DATACLK Delay
450
ns
t
9
DATACLK Period
440
ns
t
10
Data Valid to DATACLK
HIGH Delay
20
75
ns
t
11
Data Valid after
DATACLK LOW Delay
100
125
ns
DIGITAL
I/O
PIN #
NAME
DESCRIPTION
1
RC
I
Read/Convert. With BUSY high, a falling edge on R/C initiates a new conversion.
2
BUSY
O
At the start of conversion BUSY goes LOW and stays LOW until conversion is complete.
3
+5V
DIG2
Isolated Digital Supply Volts.
10
+5V
DIG1
Digital Supply Volts.
11
+5V
ANA
R1
IN
Analog Supply Volts.
12
Analog Input.
13
R2
N
Analog Input.
14
R3
N
Analog Input.
15
CAP
Reference Buffer Output. 2.2
μ
F tantalum capacitor to ground.
16
REF
Reference Input/Output. 2.2
μ
F tantalum capacitor to ground.
17
AGND
Analog Ground.
18
SB/BTC
I
Selects Straight Binary or Binary Two’s Complement for output data format.
19
DGND1
Digital Ground.
26
DGND2
Isolated Ground.
27
DATACLK
O
Data Clock Output.
28
SDATA
O
Serial Output Synchronized to DATACLK.
TABLE I. Pin Assignments.
PIN CONFIGURATION
ANALOG
INPUT
RANGE
CONNECT R1
IN
VIA 200
TO
CONNECT R2
IN
VIA 100
TO
CONNECT R3
IN
TO
IMPEDANCE
±
10V
±
5V
±
3.33
0V to 10V
0V to 5V
0V to 4V
V
AGND
V
IN
V
IN
V
AGND
AGND
CAP
CAP
CAP
AGND
V
IN
V
IN
22.9k
13.3k
10.7k
13.3k
10.0k
10.7k
AGND
V
AGND
AGND
V
IN
TABLE I. Input Range Connections. See Figure 3 for
complete information.
TABLE II.
Conversion and Data Timing. T
A
= –40
°
C to +85
°
C.
SDATA
DATACLK
DGND2
DGND1
SB/BTC
AGND
REF
CAP
R/C
BUSY
+5V
DIG2
+5V
DIG1
+5V
ANA
R1
IN
R2
IN
R3
IN
1
2
3
10
11
12
13
14
28
27
26
19
18
17
16
15
ISO809
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