Datasheet

LTC4307
12
4307f
Systems with Supply Voltage Droop
In large 2-wire systems, the V
CC
voltages seen by devices
at various points in the system can differ by a few hundred
millivolts or more
. This situation is modeled by a series
resistor in the V
CC
line, as shown in Figure 8. For proper
operation, make sure that the V
CC(LTC4307)
is ≥ 2.3V.
Figure 6. The LTC4307 in a Repeater/Bus Extender Application Where Two 2-Wire Systems are Separated by a Distance
Figure 7. The LTC4307 in a Repeater Application. The LTC4307’s Low Offset Allows Cascading of Multiple Devices
Figure 8. System with Voltage Droop
C2
0.01μF
R7
10k
R6
10k
4307 F06
SDAIN
SCLIN
SDAOUT
SCLOUT
V
CC
GND
LTC4307
R5
10k
R1
10k
R4
10k
R2
10k
C1
0.01μF
R3
10k
3.3V
SDA1
SCL1
SDAIN
SCLIN
SDAOUT
SCLOUT
V
CC
GND
R8
10k
SDA2
SCL2
LTC4307
ENABLE
READY
ENABLE
READY
C3
0.01 F
R10
2.7k
R9
10k
4307 F07
SDAIN
SCLIN
SDAOUT
SCLOUT
V
CC
GND
LTC4307
R5
2.7k
R1
2.7k
R4
2.7k
R2
2.7k
C1
0.01 F
R3
10k
V
CC
SDA1
SCL1
SDAIN
SCLIN
SDAOUT
SCLOUT
V
CC
GND
R11
2.7k
SDA2
SCL2
LTC4307
R8
2.7k
R7
2.7k
C2
0.01 F
R6
10k
SDAIN
SCLIN
SDAOUT
SCLOUT
V
CC
GND
LTC4307
ENABLE
READY
ENABLE
READY
ENABLE
READY
4307 F08
R5
10k
R1
10k
R4
10k
R2
10k
R
DROOP
C1
0.01μF
R3
10k
V
CC(BUS)
SDA1
SCL1
READY
SDAIN
SCLIN
SDAOUT
SCLOUT
V
CC
GND
SDA2
SCL2
V
CC(LTC4307)
LTC4307
ENABLE
READY
APPLICATIONS INFORMATION