clc408 ETC-unknow, clc408 Datasheet - Page 10

• Manufacturer Part Number: clc408
• Description: High-speed, Low-power Line Driver
• Manufacturer: ETC-unknow

where GBWP
U1. As R
should be large enough so that U2’s 1/f noise does not
significantly impact the output noise.
Adjust R
f >> f
Precision Half-Wave Rectifier
Figure 8 shows a precision half-wave rectifier. When
V
D
variable output impedance of the rectifier.
The output voltage is:
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V
in
2
in
> 0, D
is on. The second amplifier (U2) buffers V
UG
R
1
Figure 8: Precision Half-Wave Rectifier
.
7
1
so that the gain at f << f
3
is on and D
V
is made larger, f
o
-
CLC408
+
U1
0, V
is the Gain-Bandwidth Product of
U1
R
R
R
R
2
3
2
1
in
2
is off. When V
1
0
D
D
1
2
R
R
R
UG
6
5
4
R
5
UG
becomes smaller. f
V , V
in
matches the gain at
in
+
CLC408
-
in
< 0, D
0
U2
1
o
R
is off and
6
from the
V
UG
o
10
Diodes D
minimize delay.
Set R
for the gain A
increased slightly to compensate for the delays through
D
Set R
the gain A
R
the changing output impedance of U1.
Other configurations are possible:
Pick the combination that best suits your needs.
1
4
and D
is an optional resistor; it helps isolate U2’s input from
2
1) Connect U2’s input between R
2) Use an inverting gain configuration for U2 to
6
= R
to the recommended feedback resistor value for
V
change the polarity of V
1
2
o
v
.
3
and D
= (1 + R
to the recommended feedback resistor value
0 for V
v
= -R
2
need to be Schottky or PIN diodes to
in
6
/R
2
< 0.
/R
5
).
1
. R
2
and R
o
.
3
3
may need to be
and D
2
so that