Allegro MicroSystems A4910 Quick start guide

Demo Board Schematic/Layout
A4910
A4910-DB
SCHEMATIC
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
D D
C C B B
A A
X1:3 X1:1 X1:2
PGND
VBAT
X2:1 X2:2
PGND
0R010 R27
0R010 R30
0R010
R31
0R010 R34
0R010 R35
0R010 R38
TP46 TP41 TP36
TP12 TP11 TP18 TP19 TP20 TP21 TP22 TP23
LM2936DT-5.0
IN
GND
OUT
U1
J1
J3
PGND
VDD
X3:1 X3:2
PGND
10u
+C1
PGND PGND
DIAG
17
STRn
13
SCK
14
SDI
15
SDO
16
AHI
18
ALO
19
BHI
20
BLO
21
CHI
22
CLO
23
RESETn
12
OPAP
24
OPAM
25
OPAO
26
VDD 10
CP1 5
CP2 4
AGND
9
PGND
6
VBB7
VREG 3
VBRG 8
CA 2
GHA 48
SA 1
CB 45
GHB 43
SB 44
GLA47
LSSA 46
GLB42
LSSB 41
CC 40
GHC 38
GLC37
SC 39
LSSC 36
CSAP
33
CSAM
34
CSAO
35
CSBP
30
CSBM
31
CSBO
32
CSCP
27
CSCM
28
CSCO
29
COASTn
11
A4910 Skt
IC1
10u
+
C4
PGND
J6
1000u
+C6
1000u
+C7
PGND PGND
PGND
VDD
87654321
ON
S1
TP26
TP29 TP32 TP35
PGND
VDD
X5:6 X5:5 X5:4 X5:3 X5:2 X5:1
PGND
100n C8
100n
C9
100n
C10
LSSA LSSB LSSC
SDO SDI SCK STRn
X5 X4 X3
X2 X1
SDO SDI STRn SCK DIAG RESETn COASTn
3k9
R39
3k9
R42
1n
C14
10K
R43
10K
R44
75k
R40
PGND
82k
R41
3k9
R45 3k9
R48
1n
C15
10K
R49 10K R50
75k
R46
PGND
82k
R47
3k9
R51
3k9
R54
1n
C16
10K
R55 10K R56
75k
R52
PGND
82k
R53
CSAO
CSBO
CSCO
G1 G2
PGND
CSBP
CSAP
1n
C17
6k8
R37
75k
R36
75k
R32
PGND
3K9
NF
R29
3K9
NF
R33
0R
R2
TP3
TP4
100n C19
PGND
100n C18
PGND
1KR3
1K
R4
1K
R5
1K
R6
1K
R7
1K
R10
1K
R11
1K
R13
1K
R14
1K
R15
1K
R17
1K
R18
1K
R20
100
R9
100
R12
100
R16
100
R19
100
R21
100
R22
220n
C11
220n
C12
220n
C13
IRFR2405
Q1 IRFR2405 Q2
IRFR2405 Q3 IRFR2405 Q4
IRFR2405 Q5
IRFR2405
Q6
100nC5
1K
R28
D2
VDD
VDD
VDD
VDD
PGND
100K
NF
R26
VBAT
SA SB SC
VSA VSB
VSC
VSBAT
OPAO OPAP OPAM CSAO CSBO CSCO VSA VSB VSC VSBAT
OPAO
CSCM
CSCP
CSBM
CSAM
LSSA LSSB LSSC
1
X4:1 2 X4:2
3
X4:3 4 X4:4 5 X4:5 6 X4:6 7 X4:7 8 X4:8 9 X4:9
10
X4:1011 X4:1112 X4:1213 X4:1314 X4:1415 X4:15
16
X4:1617 X4:1718 X4:18
19
X4:1920 X4:2021 X4:2122 X4:2223 X4:2324 X4:2425 X4:2526 X4:26
GHA GLA GHB GLB GHC GLC
CC CB CA SA SB SC
AHI ALO BHI BLO CHI CLO
1000u
+C20
PGND
470nC3
100K
NF
R23
100K
NF
R24
100K
NF
R25
10K
NF
R62
10K
NF
R63
10K
NF
R64
10K
NF
R65
470KR1 470KR8
470K R57 470K R58
470K
R59 470K R60
J2 J4
J7
OPAO OPAO OPAO
100n C21
PGND
10u
+C2
Allegro Microsystems Inc
115 Northeast Cutoff Worcester MA 01606 USA
A4910 Demonstration Board
0 Yi Li 17th May 2012
1 of 1 A2 EDC078R0
TITLE:
REV: AUTHOR: DATE: PCB:
SHEET: SIZE:

Demo Board Schematic/Layout
A4910
2
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
LAYOUT

Demo Board Schematic/Layout
A4910
3
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com

Demo Board Schematic/Layout
A4910
4
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com

Demo Board Schematic/Layout
A4910
5
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com

Demo Board Schematic/Layout
A4910
6
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com

Demo Board Schematic/Layout
A4910
7
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com

Demo Board Schematic/Layout
A4910
8
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com

Demo Board Schematic/Layout
A4910
9
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com

Demo Board Schematic/Layout
A4910
10
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
BILL OF MATERIALS

Demo Board Schematic/Layout
A4910
11
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
For the latest version of this document, visit our website:
www.allegromicro.com
Revision History
Number Date Description
– September 7, 2016 Initial release
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Allegro MicroSystems, LLC reserves the right to make, from time to time, such departures from the detail specifications as may be required to
permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that
the information being relied upon is current.
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