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MAX17843 датащи(PDF) 85 Page - Maxim Integrated Products

номер детали MAX17843
подробное описание детали  12-Channel, High-Voltage Smart Sensor Data-Acquisition Interface
PDF  131 Pages
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производитель  MAXIM [Maxim Integrated Products]
домашняя страница  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX17843 датащи(HTML) 85 Page - Maxim Integrated Products

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For MAX17843, Maxim design team added a digital offset
trim to improve ADC accuracy. Because it is calculated
after the ADCTST data insertion, it will show up as an
offset to any ADCTST diagnostic. The offset value will be
constant for a given part, but varies from part to part.
Table 45 gives the mapping of expected read from the
diagnostic and block register.
AUXINn Open Diagnostic
The AUXINn open diagnostic can be used to detect if the
AUXINn pin is open circuit. The diagnostic procedure is
shown in Figure 56 and Figure 57.
Table 45. Expected ALU Diagnostic and Block Register Results
Figure 56. AUXINn Open Diagnostic
ALU DIAGNOSTIC RESULT WHEN ADCTSTST = 1, DIAGSEL = 6
OS SETTING
OVERSAMPLING
DIAGNOSTIC DATA ALU
000
1
ADCTST1A x 4
001–111
4–128
[ADCTST1A + ADCTST2A] x 2
ALU DIAGNOSTIC RESULT WHEN ADCTSTST = 1, DIAGSEL = 4, 5
OS SETTING
OVERSAMPLING
DIAGNOSTIC DATA ALU
000
1
ADCTST1B x 4
001–111
4–128
[ADCTST1B + ADCTST2B] x 2
ALU DIAGNOSTIC RESULT WHEN ADCTSTST = 1, DIAGSEL = 1, 2, 3
OS SETTING
OVERSAMPLING
DIAGNOSTIC DATA ALU
000
1
[ADCTST1A + ADCTST1B] x 2
001–111
4–128
[ADCTST1A + ADCTST1B ADCTST2A + ADCTST2B]
ALU BLOCK RESULT WHEN ADCTSTST = 1
OS SETTING
OVERSAMPLING
DIAGNOSTIC DATA ALU
000
1
[ADCTST1A + ADCTST1B] x 2
001–111
4–128
[ADCTST1A + ADCTST1B ADCTST2A + ADCTST2B]
AGND
AUXINn
THERMISTOR
RFILTER
CONTROLLED BY
AUXIN
nTSTEN AND
CTSTSRC
SET BY
CTSTDAC[3:0]
VAA
AGND
TEST THIS
NODE FOR AN
OPEN CIRCUIT
TO LVMUX
CFILTER
RRATIO
VTHRM
t
MAX17843
12-Channel, High-Voltage Smart Sensor
Data-Acquisition Interface
www.maximintegrated.com
Maxim Integrated │ 85



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