参数资料
型号: LTC1290BIN#TR
厂商: LINEAR TECHNOLOGY CORP
元件分类: ADC
英文描述: 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP20
封装: 0.300 INCH, PLASTIC, DIP-20
文件页数: 3/32页
文件大小: 613K
代理商: LTC1290BIN#TR
11
LTC1290
1290fe
U
S
A
O
PPLICATI
WU
U
I FOR ATIO
MUX Address
The first four bits of the input word assign the MUX
configuration for the requested conversion. For a given
channel selection, the converter will measure the voltage
between the two channels indicated by the + and – signs
in the selected row of Table 1. Note that in differential
MUX ADDRESS
DIFFERENTIAL CHANNEL SELECTION
Table 1. Multiplexer Channel Selection
MUX ADDRESS
SGL/
DIFF
SELECT
1
0
ODD
SIGN
10
0
+
10
0
1
+
10
1
0
+
10
1
+
11
0
+
11
0
1
+
11
1
0
+
11
1
+
SGL/
DIFF
ODD
SIGN
SELECT
1
0
00
0
+
00
0
1
+
00
1
0
+
00
1
+
01
0
+
01
0
1
+
01
1
0
+
01
1
+
0
1
23
4
56
7
0
1
2
3
4
5
6
7
COM
SINGLE-ENDED CHANNEL SELECTION
mode (SGL/DIFF = 0) measurements are limited to four
adjacent input pairs with either polarity. In single-ended
mode, all input channels are measured with respect to
COM.
Figure 1. Examples of Multiplexer Options on the LTC1290
0
1
2
3
4
5
6
7
CHANNEL
COM (
)
8 Single-Ended
+
0,1
CHANNEL
4 Differential
2,3
4,5
6,7
+ ()
+
+ ()
(+)
4
5
6
7
CHANNEL
COM (
)
Combinations of Differential and Single-Ended
+
0,1
2,3
COM (UNUSED)
Changing the MUX Assignment “On the Fly”
COM (
)
4,5
6,7
5,4
1ST CONVERSION
2ND CONVERSION
+
+
+
+
7
6
{
LTC1290 F01
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