SLA7020M and SLA7021M
s Diagram of standard external circuit (Recommended circuit constants)
VCC (46V max)
VS (10~30V)
VREF (5V)
8
16
10 15
r3 r4
VS OUTA OUTA OUTB OUTB
r1
INA 5
INA
2 TdA
11 TdB
SLA7020M
SLA7021M
INB 14
INB
C1 C2
r2
RSA REFA REFB RSB GA GB
7
3 13
94
12
Da
C3
Open
collector
r5
Rs
C4
Db
r6
Rs
Excitation signal time chart
2-phase excitation
clock 0
1
2
3
01
INA H
H
L
L
HH
INB L
H
H
L
LH
1-2 phase excitation
clock 0 1 2 3 4 5 6 7 0 1 2 3
INA H H H H L L L L H H H H
tdA L L L H L L L H L L L H
INB L L H H H H L L L L H H
tdB L H L L L H L L L H L L
• tdA and tdB are signals before the inverter stage.
r1 510Ω
r2 100Ω (VR)
r3 47kΩ
r4 47kΩ
r5 2.4kΩ
r6 2.4kΩ
C1 470pF
C2 470pF
C3 2200pF
C4 2200pF
Da. Db
Rs
7020M
EK03
1Ω typ
7021M
RK34
0.68Ω typ
tdA tdB
s External dimensions
φ 3.2±0.15
31±0.2
24.4±0.2
16.4±0.2
φ 3.2±0.15×3.8
4.8±0.2
1.7±0.1
Type No.
Lot No.
0.65
+0.2
–0.1
1.15
+0.2
–0.1
14×P2.03±0.7=28.42±1.0
31.3±0.2
R-End
2.45±0.2
0.55
+0.2
–0.1
4±0.7
(Unit: mm)
Epoxy resin package
0.65
+0.2
–0.1
1.15
+0.2
–0.1
14×P2.03±0.4=28.42±0.8
2.2±0.4
6.3±0.6
7.5±0.6
1 2 3 · · · · · · · 15
Forming number No. 853
12 3 · · · · · · · 15
Forming number No. 855
14