參數(shù)資料
型號(hào): LTC1294DIJ
廠商: LINEAR TECHNOLOGY CORP
元件分類(lèi): ADC
英文描述: Single Chip 12-Bit Data Acquisition System
中文描述: 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP20
封裝: CERDIP-20
文件頁(yè)數(shù): 11/28頁(yè)
文件大?。?/td> 494K
代理商: LTC1294DIJ
11
LTC1293/LTC1294/LTC1296
U
S
A
O
PPLICATI
U
U
MUX ADDRESS
SGL/
DIFF
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
DIFFERENTIAL CHANNEL SELECTION
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
+
+
+
+
+
+
+
+
0 1 2 3 4 5 6 7
Table 1a. LTC1294/6 Multiplexer Channel Selection
MUX ADDRESS
SGL/
DIFF
SIGN
1
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
SINGLE-ENDED CHANNEL SELECTION
0 1 2 3 4 5 6 7 COM
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
+
+
+
+
+
+
Table 1b. LTC1293 Channel Selection
0 1 2 3 4 5
MUX ADDRESS
SGL/
DIFF
SIGN
1
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
Not Used
Not Used
Not Used
Not Used
Unipolar/Bipolar (UNI)
The UNI bit 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 volt-
age. When UNI is a logical zero, a bipolar conversion will
result. The input span and code assignment for each
conversion type are shown in the figures below:
Unipolar Output Code (UNI = 1)
ODD
SIGN
SELECT
1 0
SELECT
1 0
0
0
1
1
0
0
1
1
ODD
0
1
0
1
0
1
0
1
+
+
+
+
+
+
+
+
DIFFERENTIAL CHANNEL SELECTION
SINGLE-ENDED CHANNEL SELECTION
MUX ADDRESS
SGL/
DIFF
SIGN
ODD
SELECT
1 0
ODD
SELECT
1 0
0
0
1
1
0
0
1
1
0 1 2 3 4 5 COM
+
+
0
1
0
1
0
1
0
1
+
+
+
+
0
1
V
R
V
R
V
R
V
IN
0 0 0 0 0 0 0 0 0 0 0 1
0 0 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 1 1 1 1 0
LTC1293 AI03b
OUTPUT CODE
1 1 1 1 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 0 0 1
0 0 0 0 0 0 0 0 0 0 0 0
I
NPUT VOLTAGE
V
REF
– 1LSB
V
REF
– 2LSB
1LSB
0V
I
NPUT VOLTAGE
(VREF = 5V)
4.9988V
4.9976V
0.0012V
0V
LTC1293 AI03a
Unipolar Transfer Curve (UNI = 1)
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