Datasheet

LTC6078/LTC6079
13
60789fa
TYPICAL APPLICATIO S
U
LDO Load Balancing
V
DD
60789 TA09
1k
V
IN
1.8V TO 20V
10µF
0.01µF
0.1µF
10µF
LOAD
I
LOAD
IN OUT
SHDN
LT1763
BYP
FB
+
–
A
R1
2k
R2
2k
0 ≤ I
LOAD
≤ 1.5A
1.22V ≤ V
OUT
≤ V
DD
LDO LOADS MATCH TO WITHIN
1mA WITH 10mΩ OF BALLAST
RESISTANCE (2 INCHES OF AWG
28 GAUGE STRANDED WIRE)
A, B: LTC6078
BALLAST RESISTANCE:
IDENTICAL LENGTH
THERMALLY MATED
WIRE OR PCB TRACE
+
10µF0.01µF
IN OUT
SHDN
LT1763
BYP
FB
2k
10k
2k
100Ω
1k
0.1µF
10µF0.01µF
IN OUT
SHDN
LT1763
BYP
FB
2k
10k
2k
100Ω
+
–
B
R2
R1
V
OUT =
1.22V 1 +
⎛
⎝
⎜
⎞
⎠
⎟
pH Probe Amplifi er
60789 TA10
V
CC
1k
V
OUT
1000pF
SENSOR: SENSOREX S200C pH PROBE
LTC6078 INPUT IMPEDANCE ≈ 1TΩ OR GREATER
V
OUT
= 1.25V + 59.2mV • (pH – 7)
A, B: LTC6078
PRECISION
RESISTOR PT146
1k
+3500ppm/°C
57.6k
+
–
B
LT1634
1.25V
pH
–
+
A