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MFS2401AVBA0ES Datasheet(PDF) 41 Page - NXP Semiconductors

Part # MFS2401AVBA0ES
Description  Fail-safe system basis chip with SMPS and LDO, CAN FD transceiver
PDF  151 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

MFS2401AVBA0ES Datasheet(HTML) 41 Page - NXP Semiconductors

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NXP Semiconductors
FS2400
Fail-safe system basis chip with SMPS and LDO, CAN FD transceiver
15 AMUX: Analog multiplexer
15.1 Functional description
The AMUX pin delivers internal analog voltage channels to the MCU ADC input. The voltage channels delivered
to AMUX pin can be selected by SPI. The maximum AMUX output voltage range is VDDIO. An external output
capacitor CAMUX_OUT is required for the buffer stability.
15.2 AMUX schematic diagram
aaa-046844
Buffer
R4
SPI
Signals
/2 or /3.25
Signals
/11 or /25
Signals /1
R5
R6
x
y
z
AMUX
To MCU ADC
VDDIO
AGND
AMUX[4:0]
CAMUX_OUT
SPI
Channels_x
Channels_y
Channels_z
R1
R2
R3
Figure 26. AMUX block diagram
15.3 Channel selection
Channel
AMUX[4:0]
Signal selection for AMUX output
AMUX_DIV = 0
AMUX_DIV = 1
0
00000
AGND
N/A
N/A
1
00001
VDIG : internal voltage supply (1.6 V)
1
1
2
00010
V1 voltage
2
3.25
3
00011
Reserved
N/A
N/A
4
00100
V3 voltage
3.25
3.25
5
00101
VBOS internal voltage
3.5
3.5
6
00110
VSUP voltage (divider ratio configurable by SPI)
11
25
7
00111
Reserved
N/A
N/A
8
01000
Reserved
N/A
N/A
9
01001
Reserved
N/A
N/A
10
01010
Reserved
N/A
N/A
11
01011
Reserved
N/A
N/A
12
01100
V1 TWARN temperature sensor (Die temperature sensor)
1
1
13
01101
V1 temperature sensor
1
1
14
01110
Reserved
N/A
N/A
15
01111
V3 temperature sensor
1
1
16
10000
VDDIO voltage
2
3.25
Table 16. AMUX output selection
FS2400
All information provided in this document is subject to legal disclaimers.
© 2024 NXP B.V. All rights reserved.
Product data sheet
Rev. 4 — 23 October 2024
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