Datasheet

LTC2945
26
2945fa
For more information www.linear.com/LTC2945
Typical applicaTions
A Wide Range Supply Monitor
2945 TA02
2.7V TO 5.9V
C2
0.1µF
V
IN
0V TO 80V
R
SNS
0.02Ω
V
OUT
V
ADIN
R1
2k
R2
2k
R3
2k
3.3V
V
DD
SCL
SDA
INT
GND
ADR0
SCL
V
DD
INTV
CC
SDAI
SDAO
ADIN
ALERT
ADR1
SENSE
+
GND
SENSE
–
LTC2945
µP
2945 TA03
V
IN
4V TO 80V
C2
0.1µF
R
SNS
0.02Ω
V
OUT
V
ADIN
R1
2k
R2
2k
R3
2k
3.3V
V
DD
SCL
SDA
INT
GND
ADR0
SCL
V
DD
INTV
CC
SDAI
SDAO
ADIN
ALERT
ADR1
SENSE
+
GND
SENSE
–
LTC2945
µP
Wide Range Supply Monitor with Wide Range V
DD
Input
Dual Supply Monitor with Common Opto-coupler for Galvanic Isolation
V
ADIN1
V
ADIN2
V
IN1
24V
V
CC1
V
CC2
V
CC2
V
CC1
V
IN2
48V
R
SNS1
0.02Ω
R
SNS2
0.02Ω
R4
10k
R5
10k
R6
1k
R7
1k
R8
0.51k
R9
0.51k
R10
10k
R11
10k
R12
10k
V
OUT1
V
OUT2
C1
1µF
C2
0.1µF
C3
1µF
C4
0.1µF
ADR0
SCL
V
DD
INTV
CC
SDAI
SDAO
ADIN
ALERT
ADR1
SENSE
+
SENSE
–
LTC2945
HCPL063L
HCPL063L
3.3V
SCL
SDA
V
DD
INT
GND
µP
ADR0
SCL
V
DD
INTV
CC
SDAI
SDAO
ADIN
ALERT
ADR1
SENSE
+
GND
GND
SENSE
–
LTC2945
2945 TA04
V
CC
V
CC
3.3V
GND
GND