LF147JAN datasheet(2/18 Pages) TI1

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LF147JAN

Wide Bandwidth Quad JFET Input Operational Amplifier

General Description

The LF147 is a low cost, high speed quad JFET input

operational amplifier with an internally trimmed input offset

voltage (BI-FET II™ technology). The device requires a low

supply current and yet maintains a large gain bandwidth

product and a fast slew rate. In addition, well matched high

voltage JFET input devices provide very low input bias and

offset currents. The LF147 is pin compatible with the stan-

dard LM148. This feature allows designers to immediately

upgrade the overall performance of existing LF148 and

LM124 designs.

The LF147 may be used in applications such as high speed

integrators, fast D/A converters, sample-and-hold circuits

and many other circuits requiring low input offset voltage,

low input bias current, high input impedance, high slew rate

and wide bandwidth. The device has low noise and offset

voltage drift.

Features

j Internally trimmed offset voltage:

5 mV max

j Low input bias current:

50 pA Typ.

j Low input noise current:

0.01 pA/

√Hz Typ.

j Wide gain bandwidth:

4 MHz Typ.

j High slew rate:

13 V/µs Typ.

j Low supply current:

7.2 mA Typ.

j High input impedance:

Ω Typ.

j Low total harmonic distortion:

V = 10, RL = 10K

Ω,V

O = 20VP-P

BW = 20Hz — 20KHz

≤0.02% Typ.

j Low 1/f noise corner:

50 Hz Typ.

j Fast settling time to 0.01%:

2 µs Typ.

Ordering Information

NS Part Number

JAN Part Number

NS Package Number

Package Description

JL147BCA

JM38510/11906BCA

J14A

14LD CERDIP

Connection Diagram

Dual-In-Line Package

20129801

Top View

See NS Package Number J14A

BI-FET II™ is a trademark of National Semiconductor Corporation.

April 2005

DS201298

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