Technical data

Analog Integrated Circuit Device Data
56 Freescale Semiconductor
908E621
TYPICAL APPLICATIONS
Figure 33. PCB Layout Recommendations
.
1
2
4
3
5
6
7
8
9
11
10
12
13
14
15
16
18
17
19
20
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22
23
25
24
26
27
54
53
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48
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37
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28
908E621
D1
LIN
VBAT
GND3 GND4
VSUP3 VSUP4
VSUP5
VSUP6
C3
C4
GND
V1
C5
C1
C2
L1
EVDD
EVSS
VDDA/VREFH
VSSA/VREFL
VDD
GND1
VSS
VSUP1
LIN
GND2
VSUP2
VSUP7
VSUP8
Table 23. Component Value Recommendation
Component Recommended Value
(1)
Comments / Signal routing
D1 reverse battery protection
C1 Bulk Capacitor
C2 100nF, SMD Ceramic, Low ESR Close to VSUP terminals with good ground return
C3 100nF, SMD Ceramic, Low ESR Close (<3mm) to digital supply terminals (EVDD, EVSS) with good
ground return.
The positive analog (VREFH/ VDDA) and the digital (EVDD) supply
should be connected right at the C3.
C4 4,7uF, SMD Ceramic, Low ESR Bulk Capacitor
C5 180pF, SMD Ceramic, Low ESR Close (<5mm) to LIN terminal.
Total Capacitance on LIN has to be below 220pF.
(C
total
= C
LIN-Terminal
+ C5 + C
Varistor
~ 10pF + 180pF + 15pF)
V1
(2)
Varistor Type TDK AVR-M1608C270MBAAB Optional (close to LIN connector)
L1
(2)
SMD Ferrite Bead Type TDK MMZ2012Y202B Optional, (close to LIN connector)
Notes
1. Freescale does not assume liability, endorse, or want components from external manufactures that are referenced in circuit drawings
or tables. While Freescale offers component recommendations in this configuration, it is the customer’s responsibility to validate their
application.
2. Components are recommended to improve EMC and ESD performance.