Datasheet

LTM9012
26
9012f
Typical applicaTion
LTM9012
9012 F11
CH1
+
CH1
–
CH2
+
CH2
–
CH3
+
CH3
–
CH4
+
CH4
–
IN1
+
IN1
–
IN2
+
IN2
–
IN3
+
IN3
–
IN4
+
IN4
–
OGND OGND OGND
OUT1A+ OUT1A– OUT2A+ OUT2A– OUT3A+ OUT3A– OUT4A+ OUT4A– OUT1B+ OUT1B– OUT2B+ OUT2B– OUT3B+ OUT3B– OUT4B+ OUT4B– DCO+ DCO– FR+ FR–
SHDN1 SHDN2 SHDN3 SHDN4 CLK
+
CLK
–
GND*
V
CC1
V
CC1
V
CC2
V
CC2
V
CC3
V
CC3
V
CC4
V
CC4
PAR/SER
CS
SCK
SDO
SDI
V
REF
SENSE
OV
DD
OV
DD
OV
DD
V
DD
V
DD
V
DD
V
DD
C23 0.1µF
C24 0.1µF
C25 0.1µF
C8 1µF
C27 0.1µF
C26 0.1µF
C9 1µF
V
DD
R4 1k
C7
2.2µF
TP3
1 3
2
J4
V
DD
V
CC
R10 1k
C20 OPT
C31
0.01µF
C28 OPT
C32 OPT
R26 OPT R20 49.9Ω R19 49.9Ω
R25 OPT
R22
0Ω
R16
0Ω
T1
MABA-007159-000000
L4
OPT
C29
C22
R24 OPT
•
•
J8
CLK
–
J6
1 3
2
J14
V
DD
V
DD
R64 1k
R12 OPT R15 OPT R17 OPT R21 OPT R23 OPT
1 3
2
J13
V
DD
R63 1k
1 3
2
J12
V
DD
R62 1k
1 3
2
J11
V
DD
R61 1k
1 3
2
J2
V
DD
R6 1k
1 3
2
J1
1 3
2
J5
OPT
V
DD
V
CC
R11 1k
R70
0Ω
L3 BEAD
1 3
2
J3
V
DD
R5 1k
R3
31.6k
R1
10k
R2 1k
V
DD
3.3V
OUT
SEN/ADJ
IN SHDN BYP
GND
R7 2k
C12 1µF
R9 1k
C13 1µF
C33, 0.01µF C35, 0.01µF C37, 0.01µF C39, 0.01µF
C34, 0.01µF C36, 0.01µF C38, 0.01µF C40, 0.01µF
C6 1µF
C11 1µF
C10 4.7µF
C14 100µF
+
R8
100Ω
OV
DD1
V
DD1
R71
0Ω
L2 BEAD
OUT
SEN/ADJ
IN
TP1
V
+
3V TO 6V
TP4
5V TO 6V
TP2
GND
TP5
GND
SHDN BYP
GND
LT1763-1.8
LT1763
C3 1µF
C4 1µF
C2 1µF
C1 4.7µF
C5 100µF
+
R72
0Ω
OV
DD
V
DD
L1 BEAD
R29, 0Ω R30, 0Ω R31, 0Ω R32, 0Ω R33, 0Ω R34, 0Ω R35, 0Ω R36, 0Ω
V
DD1
OV
DD1
C21
0.01µF
C30
0.01µF
R18
0Ω
R13 OPT R60
DNS
R14 OPT
R69
0Ω
* OTHER GND PINS OMITTED FOR CLARITY.
Figure 11. Simplified Schematic for Example Layout