參數(shù)資料
型號： DC745A
廠商： Linear Technology
文件頁數(shù)： 18/28頁
文件大?。?/td> 0K
描述： BOARD DELTA SIGMA ADC LTC2433-1
軟件下載： QuikEval System
設計資源： DC745A Design File
DC745A Schematic
標準包裝： 1
系列： QuikEval™
ADC 的數(shù)量： 2
位數(shù)： 16
采樣率（每秒）： 6.8
數(shù)據(jù)接口： MICROWIRE?，串行，SPI?
工作溫度： 0°C ~ 70°C
已用 IC / 零件： LTC2433-1
已供物品： 板
相關產(chǎn)品： LTC2433-1IMS#PBF-ND - IC ADC DIFF 16BIT 3WIRE 10-MSOP
LTC2433-1CMS#TRPBF-ND - IC ADC DIFF 16BIT 3WIRE 10-MSOP
LTC2433-1IMS#TRPBF-ND - IC ADC DIFF 16BIT 3WIRE 10-MSOP
LTC2433-1CMS#PBF-ND - IC ADC DIFF 16BIT 3WIRE 10-MSOP
LTC2433-1IMS#TR-ND - IC CONV A/D 16BIT DIFF 10-MSOP
LTC2433-1CMS#TR-ND - IC CONV A/D 16BIT DIFF 10-MSOP
LTC2433-1IMS-ND - IC CONV A/D 16BIT DIFF 10-MSOP
LTC2433-1CMS-ND - IC ADC DIFF 16BIT 3WIRE 10-MSOP
LTC2433-1
25
24331fa
Figure 24. Offset Error vs Output Data Rate and Temperature
Figure 25. +FS Error vs Output Data Rate and Temperature
Figure 26. –FS Error vs Output Data Rate and Temperature
Figure 27. Noise Histogram (Output Rate = 100Hz,
VCC = 5V, VREF = 100mV, 125°C)
OUTPUT DATA RATE (READINGS/SEC)
0
OFFSET
ERROR
(LSB)
–8
0
60 70 80 90
24331 F24
10 20 30 40 50
100
8
VCC = 5V
VREF = 5V
VINCM = 2.5V
VIN = 0V
FO = EXT OSC
TA = 85°C
TA = 25°C
OUTPUT DATA RATE (READINGS/SEC)
–3
+FS
ERROR
(LSB)
3
9
15
0
6
12
20
40
60
80
24331 F25
100
10
030
50
70
90
TA = 85°C
VCC = 5V
VREF = 5V
IN+ = 3.75V
IN – = 1.25V
FO = EXT OSC
TA = 25°C
OUTPUT DATA RATE (READINGS/SEC)
0
–
FS
ERROR
(LSB)
0
3
6
40
24331 F26
–3
–6
–9
10 20 30
50 60 70 80 90 100
TA = 85°C
VCC = 5V
VREF = 5V
IN+ = 1.25V
IN – = 3.75V
FO = EXT OSC
TA = 25°C
input and/or reference capacitors (CIN, CREF) are used, the
previous section provides formulae for evaluating the
effect of the source resistance upon the converter perfor-
mance for any value of fEOSC. If small external input and/
or reference capacitors (CIN, CREF) are used, the effect of
the external source resistance upon the LTC2433-1 typical
performance can be inferred from Figures 14, 15, 19 and
20 in which the horizontal axis is scaled by 139,800/fEOSC.
Third, an increase in the frequency of the external oscilla-
tor above 460800Hz (a more than 3
×increaseintheoutput
data rate) will start to decrease the effectiveness of the
internal autocalibration circuits. This will result in a pro-
gressive degradation in the converter accuracy and linear-
ity. Typical measured performance curves for output data
rates up to 100 readings per second are shown in Fig-
ures 24, 25, 26, 27, 28 and 29. In order to obtain the
APPLICATIO S I FOR ATIO
WU
UU
OUTPUT CODE
–1
NUMBER
OF
READINGS
(%)
50
40
30
20
10
0
1
3
4
2433 F27
0
2
5
VCC = 5V
VREF = 0.1V
VIN = 0V
REF+ = 0.1V
REF– = GND
IN+ = GND
IN– = GND
FO = 2.048MHz
TA = 125°C
GAUSSIAN DISTRIBUTION
m = 3.1
V
σ = 1.59VRMS
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