Typical Applications
Supply Current Indicator/Limiter
Hi-Z Inverting Amplifier
IN
l
V
D
V
OUT
switches high when R
I
S S
#
j
Parasitic input capacitance C1
(3 pF for LF351
plus any additional layout capacitance) interacts
with feedback elements and creates undesirable
high frequency pole. To compensate, add C2 such
j
that: R2C2
R1C1.
Ultra-Low (or High) Duty Cycle
Pulse Generator
Long Time Integrator
b
4.8 2V
S
&
t
R1C fin
R2C fin
#
#
OUTPUT HIGH
OUTPUT LOW
b
b
4.8
2V
V
S
7.8
S
TL/H/5648–10
&
a
t
*Low leakage capacitor
b
V
7.8
S
adjust
# 50k pot used for less sensitive V
OS
Vb
a
e
where V
V
S
l
l
*low leakage capacitor
8