LF355 datasheet(25/47 Pages) TI2

Part #	LF355

Description	LFx5x JFET Input Operational Amplifiers

PDF	47 Pages

Scroll/Zoom	100%

Manufacturer	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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25 / 47 page

LF155, LF156, LF256, LF257

LF355, LF356, LF357

www.ti.com

SNOSBH0D – MAY 2000 – REVISED NOVEMBER 2015

R1, R4 matched. Linearity 0.1% over 2 decades.

(4)

Figure 46. Isolating Large Capacitive Loads

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Overshoot 6%

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ts 10 μs

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When driving large CL, the VOUT slew rate determined by CL and IOUT(MAX):

(5)

Figure 47. Low Drift Peak Detector

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By adding D1 and Rf, VD1 = 0 during hold mode. Leakage of D2 provided by feedback path through Rf.

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Leakage of circuit is essentially Ib (LF155, LF156) plus capacitor leakage of Cp.

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Diode D3 clamps VOUT (A1) to VIN − VD3 to improve speed and to limit reverse bias of D2.

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Maximum input frequency should be << ½

πRfCD2 where CD2 is the shunt capacitance of D2.

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LF355 Datasheet(PDF) 25 Page - Texas Instruments