Datasheet

LT3045
28
Rev. B
For more information www.analog.com
TYPICAL APPLICATIONS
Low Noise Wheatstone Bridge Power Supply
10µF
33.2k
4.7µF
200k
453k
49.9k
4.7µF
R2
R1
R3
+
–
R4
V
IN
5V ±5%
OUT
IN
SET
LT3045
3045 TA10
V
OUT
: 3.3V AND I
OUT(MAX)
: 500mA
100µA
OUTS
PGFB
ILIM
GND
PG
EN/UV
RESISTOR
TOLERANCE
BRIDGE PSRR
NOISE AT V
BRIDGE
USING LT1763
1%
5%
40dB
26dB
8nV
RMS
42.5nV
RMS
PERFECT
MATCHING
INFINITE
–
NOISE AT V
BRIDGE
USING LT3045
200nV
RMS
1000nV
RMS
–
LT1763 NOISE: 20µV
RMS
(10Hz TO 100kHz)
LT3045 NOISE: 0.8µV
RMS
(10Hz TO 100kHz)
V
BRIDGE
+
–
PGFB Disabled without Reverse Input Protection PGFB Disabled with Reverse Input Protection
R
SET
10µF
0.47µF
4.7µF
V
IN
OUT
IN
SET
LT3045
V
OUT
100µA
OUTS
PGFB
ILIM
GND
PG
EN/UV
+
–
3045 TA11
0.47µF
10µF
1N4148
4.7µF
R
SET
V
IN
OUT
IN
SET
LT3045
V
OUT
100µA
OUTS
PGFB
ILIM
GND
PG
EN/UV
3045 TA12
+
–
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