Linear Technology LTC6804-1 - Page 73

LTC6804-1/LTC6804-2
73
680412fc
For more information www.linear.com/LTC6804-1
applicaTions inForMaTion
1.21k
806Ω
IPA
IBIAS
ISOMD
IMA
V
–
V
REGB
ICMP
LTC6804-2
1.21k
806Ω
IPA
IBIAS
ISOMD
IMA
V
–
V
REGA
ICMP
680412 F47
LTC6804-2
1.21k
806Ω
GNDB
GNDA
GNDC
GNDB
GNDA
GNDC
IPA
IBIAS
ISOMD
IMA
V
–
V
REGC
ICMP
LTC6804-2
••
••
••••
100Ω
1.21k 806Ω
5k
100nF
IBIAS
ICMP
GND
SLOW
MSTR
IP
IM
V
DD
V
DDS
EN
MOSI
MISO
SCK
CS
POL
PHA
5V5V
5V
5V
LTC6820
100nF
µC
SDO
CS
SDI
SCK
100Ω
Figure 47. Connecting the LTC6804-2 in a Multi-Drop Configuration
isoSPI
BUS
HV XFMR
CT HV XFMR
22Ω
22Ω
22Ω
22Ω
isoSPI
BUS
LTC6804-2
LTC6804-2
IPA
IMA
V
–
15pF
100µH CMC
10nF
••
100µH CMC
••
402Ω
15pF
402Ω
••
a)
IPA
IMA
V
–
100µH CMC
10nF
••
••
b)
680412 F48
Figure 48. Preferred isoSPI Bus Couplings For Use With LTC6804-2