LT1464CS8 datasheet(7/12 Pages) LINER

Nome de Peças	LT1464CS8

Descrição Electrónicos	Dual/Quad Micropower, 1MHz C-Load Picoampere Bias Current JFET Input Op Amps

PDF	12 Pages

Scroll/Zoom	100%

Fabricante Electrônico	LINER [Linear Technology]

Página de início	http://www.linear.com

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7 / 12 page

LT1464/LT1465

APPLICATIONS INFORMATION

Phase Reversal Protection

Most industry standard JFET input single, dual and quad

op amps exhibit phase reversal at the output when the

negative common mode limit at the input is exceeded.

Common mode range is at a premium at

±5Vsupplies.The

Figures show a

±5.2V sine wave input (Figure 1a), the

response of a competing JFET input op amp in the unity-

gain follower mode (Figure 1b) and the response of the

LT1464/LT1465 (Figure 1c).

The phase reversal of Figure 1b can cause lock-up in servo

systems. The LT1464/LT1465 does not phase-reverse

when the common mode input is anywhere within the

supplies.

(1a)

±5.2V Sine Wave

LT1464 • F01a

LT1464 • F01b

LT1464 • F01c

Figure 1. Voltage Follower with Input Exceeding the Common Mode Range (VS = ±5V)

(1b) Typical JFET Input Op Amp

with

±5V Supplies

(1c) LT1464/LT1465 Output

with

±5V Supplies

LT1464CS8 Folha de dados(PDF) 7 Page - Linear Technology