參數(shù)資料
型號: ISO807
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)
文件頁數(shù): 4/12頁
文件大?。?/td> 199K
代理商: ISO807
4
ISO807
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
Analog Supply Volts.
12
R1
IN
Analog Input.
13
NC
No Connection. Leave unconnected.
14
R2
IN
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
IMPEDANCE
±
10V
0V to 5V
0V to 4V
V
IN
CAP
V
IN
V
IN
45.7k
20.0k
21.4k
AGND
V
IN
TABLE II. Input Range Connections. See also Figure 3.
R/C
BUSY
DATACLK
OPERATION
1
Output
Initiates conversion “n”. Valid data from conversion “n-1” clocked out on SDATA.
0
X
New conversion initiated without acquisition of a new signal. Data will be invalid. R/C must be HIGH when BUSY goes HIGH.
X
0
X
New convert commands ignored. Conversion “n” in progress.
TABLE III. Control Functions
SDATA
DATACLK
DGND2
DGND1
SB/BTC
AGND
REF
CAP
R/C
BUSY
+5V
DIG2
+5V
DIG1
+5V
ANA
R1
IN
NC
R2
IN
1
2
3
10
11
12
13
14
28
27
26
19
18
17
16
15
ISO807
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