LF356 datasheet(16/47 Pages) TI2

16 / 47 page

LF155, LF156, LF256, LF257

LF355, LF356, LF357

SNOSBH0D – MAY 2000 – REVISED NOVEMBER 2015

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7.3 Feature Description

7.3.1 Large Differential Input Voltage

These are operational amplifiers with JFET input devices. These JFETs have large reverse breakdown voltages

from gate to source and drain eliminating the need for clamps across the inputs. Therefore large differential input

voltages can easily be accommodated without a large increase in input current. The maximum differential input

voltage is independent of the supply voltages. However, neither of the input voltages should be allowed to

exceed the negative supply as this will cause large currents to flow which can result in a destroyed unit.

7.3.2 Large Common-Mode Input Voltage

These amplifiers will operate with the common-mode input voltage equal to the positive supply. In fact, the

common-mode voltage can exceed the positive supply by approximately 100 mV independent of supply voltage

and over the full operating temperature range. The positive supply can therefore be used as a reference on an

input as, for example, in a supply current monitor and/or limiter.

7.4 Device Functional Modes

The LFx5x has a single functional mode and operates according to the conditions listed in the Recommended

Operating Conditions.

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LF356 Datasheet(PDF) 16 Page - Texas Instruments