SM73306 Datasheet, PDF (18/22 Pages) Texas Instruments – SM73306 CMOS Rail-to-Rail Input and Output Operational Amplifier

Photo Voltaic-Cell Amplifier
also take advantage of the SM73306 ultra-low input current.
The ultra-low input current yields negligible offset error even
when large value resistors are used. This in turn allows the
use of smaller valued capacitors which take less board space
and cost less.
Low Voltage Peak Detector with Rail-to-Rail Peak Capture
Range
Instrumentation Amplifier
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Dielectric absorption and leakage is minimized by using a
polystyrene or polypropylene hold capacitor. The droop rate
is primarily determined by the value of C_H and diode leakage
current. Select low-leakage current diodes to minimize droop-
ing.
Pressure Sensor
If R1 = R5, R3 = R6, and R4 = R7; then
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∴A_V ≈ 100 for circuit shown (R₂ = 9.3k).
Rail-to-Rail Single Supply Low Pass Filter
R_f = Rx
R_f >> R1, R2, R3, and R4
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This low-pass filter circuit can be used as an anti-aliasing filter
with the same supply as the A/D converter. Filter designs can
In a manifold absolute pressure sensor application, a strain
gauge is mounted on the intake manifold in the engine unit.
Manifold pressure causes the sensing resistors, R1, R2, R3
and R4 to change. The resistors change in a way such that
R2 and R4 increase by the same amount R1 and R3 de-
crease. This causes a differential voltage between the input
of the amplifier. The gain of the amplifier is adjusted by R_f.
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