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LTC1093ACN 数据表(PDF) 15 Page - Linear Technology

部件名 LTC1093ACN
功能描述  1-, 2-, 6- and 8-Channel, 10-Bit Serial I/O Data Acquisition Systems
PDF  32 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC1093ACN 数据表(HTML) 15 Page - Linear Technology

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LTC1091/LTC1092
LTC1093/LTC1094
S
APPLICATI
I FOR ATIO
Unipolar Transfer Curve (UNI = 1)
MSB-First/LSB-First (MSBF)
The output data of the LTC1091/LTC1093/LTC1094 is
programmed for MSB-first or LSB-first sequence using
the MSBF bit. When the MSBF bit is a logical one, data will
appear on the DOUT line in MSB-first format. Logical zeros
will be filled in indefinitely following the last data bit to
accommodate longer word lengths required by some
microprocessors. When the MSBF bit is a logical zero,
LSB-first data will follow the normal MSB-first data on the
DOUT line. (See operating sequence).
Unipolar/Bipolar (UNI)
The UNI bit of the LTC1093/LTC1094 determines whether
the conversion will be unipolar or bipolar. When UNI is a
logical one, a unipolar conversion will be performed on the
selected input voltage. When UNI is a logical zero, a bipolar
conversion will result. The input span and code assign-
ment for each conversion type are shown in the figures
below.
The LTC1091/LTC1092 are permanently configured for
unipolar mode.
0V
1LSB
VREF – 2LSB
VREF – 1LSB
VREF
VIN
0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 0
1091-4 AI11
1LSB
VREF – 2LSB
VREF – 1LSB
VREF
VIN
1 1 1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0
0 1 1 1 1 1 1 1 1 0
0 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 0
1 0 0 0 0 0 0 0 0 1
1 0 0 0 0 0 0 0 0 0
–1LSB
–2LSB
–VREF
–VREF + 1LSB
1091-4 AI12
OUTPUT CODE
1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 0
•
•
•
0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0
INPUT VOLTAGE
VREF – 1LSB
VREF – 2LSB
•
•
•
1LSB
0V
INPUT VOLTAGE
(VREF = 5V)
4.9951V
4.9902V
•
•
•
0.0049V
0V
1091-4AI13
Bipolar Transfer Curve (UNI = 0) LTC1093/LTC1094 Only
Unipolar Output Code (UNI = 1)
OUTPUT CODE
0 1 1 1 1 1 1 1 1 1
0 1 1 1 1 1 1 1 1 0
•
•
•
0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 0
•
•
•
1 0 0 0 0 0 0 0 0 1
1 0 0 0 0 0 0 0 0 0
INPUT VOLTAGE
VREF – 1LSB
VREF – 2LSB
•
•
•
1LSB
0V
–1LSB
–2LSB
•
•
•
–(VREF) + 1LSB
–(VREF)
INPUT VOLTAGE
(VREF = 5V)
4.9902V
4.9805V
•
•
•
0.0098V
0V
–0.0098V
–0.0195V
•
•
•
–4.9902V
–5.000V
1091-4AI14
Bipolar Output Code (UNI = 0) LTC1093/LTC1094 Only



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