Pulse Response

Small Signal Inverting

TLH9660 – 6

Small Signal Non-Inverting

TLH9660 – 7

Large Signal Inverting

TLH9660 – 8

Large Signal Non-Inverting

TLH9660 – 9

TLH9660 – 10

Application Hints

The LF451CM is an op amp with an internally trimmed input

offset voltage and JFET input devices (BI-FET II) 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

Exceeding the negative common-mode limit with the non-in-

verting input or with both inputs will force the output to a

high state potentially causing a reversal of phase to the

output

In neither case does a latch occur since raising the input

back within the common-mode range again puts the input

stage and thus the amplifier in a normal operating mode

5