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| OPA369 Datasheet, PDF (12/19 Pages) Burr-Brown (TI) – 1.8V, 1μA max, Zerø-Crossover RAIL-TO-RAIL I/O OPERATIONAL AMPLIFIER | |||
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OPA369
OPA2369
SBOS414B â AUGUST 2007 â REVISED DECEMBER 2008 ............................................................................................................................................ www.ti.com
ADDITIONAL APPLICATION EXAMPLES
Figure 27 through Figure 29 illustrate additional application examples.
VEX
RR
RR
R1
+5V
OPA369
VOUT
R1
VREF
Figure 27. Single Op Amp Bridge Amplifier
RSHUNT
Load
RG
zener(1)
R1(2)
10kW
V+
OPA369
V-
+5V
Two zener
biasing methods
are shown.(3)
RBIAS
MOSFET rated to
stand-off supply voltage
such as BSS84 for
up to 50V.
Output
RL
NOTES: (1) Zener rated for op amp supply capability (that is, 5.1V for OPA369).
(2) Current-limiting resistor.
(3) Choose zener biasing resistor or dual NMOSFETs (FDG6301N, NTJD4001N, or Si1034)
Figure 28. High-Side Current Monitor
VREF R1
RG
R2
R2
R1
VOUT
1/2
V2
OPA2369
1/2
OPA2369
V1
VOUT = (V1 - V2) 1 +
R1 +
R2
2R1
RG
+ VREF
Figure 29. Two Op Amp Instrumentation Amplifier
12
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Product Folder Link(s): OPA369 OPA2369
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