參數(shù)資料
型號(hào)： MAX1478
廠商： Maxim Integrated Products, Inc.
英文描述： 1% Accurate, Digitally Trimmed,Rail-to-Rail Sensor Signal Conditioner
中文描述： 1%精確度、數(shù)字校準(zhǔn)、滿擺幅傳感器信號(hào)調(diào)理器
文件頁(yè)數(shù)： 3/20頁(yè)
文件大?。?/td> 210K
代理商： MAX1478
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +5V, V
SS
= 0, T
A
= +25°C, unless otherwise noted.)
Note 1:
Excludes the sensor or load current.
Note 2:
All electronics temperature errors are compensated together with sensor errors.
Note 3:
The sensor and the MAX1478 must always be at the same temperature during calibration and use.
Note 4:
This is the maximum allowable sensor offset.
Note 5:
This is the sensor’s sensitivity normalized to its drive voltage, assuming a desired full-span output of 4V and a bridge
voltage of 2.5V.
Note 6:
Bit weight is ratiometric to V
DD
.
M
1% Accurate, Digitally Trimmed,
Rail-to-Rail Sensor Signal Conditioner
_______________________________________________________________________________________
3
Typically 4600ppm/°C tempco
V
FSOTC
= 2.5V
No load
Input referred, V
DD
= 5V (Note 6)
CONDITIONS
k
100
R
TEMP
Temperature-Dependent
Resistor
k
75
R
FTC
FSO Trim Resistor
k
75
R
ISRC
Current-Source Reference
Resistor
V
V
SS
+ 1.3
V
DD
- 1.3
V
BDRIVE
Bridge Voltage Swing
mA
0.1
0.5
2.0
I
BDRIVE
Bridge Current Range
μA
-20
20
Current Drive
INTERNAL RESISTORS
V
V
SS
+ 0.3
V
DD
- 1.3
Output Voltage Swing
Bits
mV/bit
3
9
DAC Resolution
DAC Bit Weight
FSOTC BUFFER
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
LSB
±1.5
DNL
Differential Nonlinearity
Bits
12
DAC Resolution
V
V
SS
+ 1.3
V
DD
- 1.3
V
ISRC
Reference Input Voltage Range
(ISRC)
DAC reference = V
BDRIVE
= 2.5V
DAC reference = V
DD
= 5.0V
mV/bit
1.4
V
OUT
Code
Offset TC DAC Bit Weight
mV/bit
2.8
V
OUT
Code
Offset DAC Bit Weight
DAC reference = V
BDRIVE
= 2.5V
DAC reference = V
DD
= 5.0V
mV/bit
0.6
V
FSOTC
Code
FSO TC DAC Bit Weight
mV/bit
1.22
V
ISRC
Code
FSO DAC Bit Weight
CURRENT SOURCE
DIGITAL-TO-ANALOG CONVERTERS
IRO DAC
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