lf356-mwc National Semiconductor Corporation, lf356-mwc Datasheet - Page 17

• Manufacturer Part Number: lf356-mwc
• Description: Jfet Input Operational Amplifiers
• Manufacturer: National Semiconductor Corporation

Typical Applications
(Continued)
Low Drift Peak Detector
00564623
• By adding D1 and R
, V
=0 during hold mode. Leakage of D2 provided by feedback path through R
.
f
D1
f
• Leakage of circuit is essentially I
(LF155, LF156) plus capacitor leakage of Cp.
b
• Diode D3 clamps V
(A1) to V
−V
to improve speed and to limit reverse bias of D2.
OUT
IN
D3
<<
• Maximum input frequency should be
⁄
R
C
where C
is the shunt capacitance of D2.
1
2
f
D2
D2
Non-Inverting Unity Gain Operation for LF157
00564675
Inverting Unity Gain for LF157
00564625
17
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