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MAX17823BGCV 데이터시트(PDF) 20 Page - Maxim Integrated Products

부품명 MAX17823BGCV
상세설명   12-Channel High-Voltage Data Acquisition System
PDF  121 Pages
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제조업체  MAXIM [Maxim Integrated Products]
홈페이지  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX17823BGCV 데이터시트(HTML) 20 Page - Maxim Integrated Products

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________________________________________________________________________________________________________________________________________________________________
MAX17823B
12-Channel High-Voltage Data Acquisition System
www.maximintegrated.com
Maxim Integrated | 20
Auxiliary Inputs
The AUXIN1 and AUXIN2 inputs can be used to measure external temperatures by enabling MEASUREEN[13:12].
These inputs have a common-mode input range of 0V to VAA. For these measurements, the ADC reference voltage
is VTHRM which is switched from VAA as shown in Figure 5. The auxiliary inputs are not oversampled even if
oversampling is enabled; they are measured only once and stored as 12-bit values in the AIN1 and AIN2 registers.
Figure 5. Auxiliary Measurement
To measure external temperature the auxiliary input is connected to a voltage divider consisting of a 10KΩ pull-up
to THRM and a 10KΩ NTC thermistor to ground as shown in Figure 6.
t
t
AUXIN2
AUXIN1
AGND
THRM
R61
10kΩ
R60
10kΩ
RTH1
10kΩ
RTH2
10kΩ
C61
100pF
C60
100pF
C62
100pF
Thermistor
wire harness
Figure 6. Auxiliary Application Circuit
-
+
LV
MUX
ADC
VREF
THRM
Conversions
in Progress
VAA
AUXIN1
AUXIN2
AGND



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