參數(shù)資料
型號(hào): MAX1457AWI
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 模擬信號(hào)調(diào)理
英文描述: 0.1%-Accurate Signal Conditioner for Piezoresistive Sensor Compensation
中文描述: SPECIALTY ANALOG CIRCUIT, PDSO28
封裝: SOP-28
文件頁數(shù): 11/12頁
文件大?。?/td> 93K
代理商: MAX1457AWI
______________________________________________________________________________________
11
M
0.1%-Ac c urate S ignal Conditioner
for Piezoresistive S ensor Compensation
V
O
V
O
PRESSURE (kPa)
UNCOMPENSATED RAW SENSOR OUTPUT
0
40
80
120
160
0
40
20
60
80
100
PRESSURE (kPa)
0
40
20
60
80
100
COMPENSATED TRANSDUCER
0
1
2
3
4
5
E
E
TEMPERATURE (°C)
UNCOMPENSATED SENSOR TEMPERATURE ERROR
30
-20
-10
10
0
20
-50
50
FSO
FSO
0
100
150
-50
50
0
100
150
TEMPERATURE (°C)
COMPENSATED TRANSDUCER ERROR
-0.15
-0.10
-0.05
0
0.05
0.10
0.15
OFFSET
T
A
= +25°C
17mV
V
OUT
73mV
T
= +25°C
0.5V
V
OUT
4.5V
OFFSET
Figure 8. Comparison of an Uncompensated Sensor (left) and a Compensated Transducer (right)
Typical Uncompensated Input (Sensor)
Offset . . . . . . . . . . . . . . . . . . . . . . . . . .±100% FSO
FSO . . . . . . . . . . . . . . . . . . . . . .20mV/V to 30mV/V
Offset TC . . . . . . . . . . . . . . . . . . . . . . . . .20% FSO
Offset TC Nonlinearity . . . . . . . . . . . . . . . .4% FSO
FSO TC . . . . . . . . . . . . . . . . . . . . . . . . . .-20% FSO
FSO TC Nonlinearity . . . . . . . . . . . . . . . . . .5% FSO
Typical Compensated Transducer Output
Temperature Range . . . . . . . . . . .-40°C to +125°C
V
OUT
. . . . . . . . . . . . . . . .ratiometric to V
DD
at 5.0V
Offset at +25°C . . . . . . . . . . . . . . .0.500V ± 200μV
FSO at +25°C . . . . . . . . . . . . . . . . .4.000V ±200μV
Offset Accuracy Over
Temperature Range . . . . . . . . . .±4mV (0.1% FSO)
FSO Accuracy Over
Temperature Range . . . . . . . . ..±4mV (0.1% FSO)
Table 1. MAX1457 Sensor Calibration and Compensation
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