December 1994
LM6125/LM6225/LM6325
High Speed Buffer
±
n High output current:
300 mA
General Description
The LM6125 family of high speed unity gain buffers slew at
800 V/µs and have a small signal bandwidth of 50 MHz while
n Stable with large capacitive loads
n Current and thermal limiting
n Electronic shutdown
n 5V to 15V operation guaranteed
n Fully specified to drive 50Ω lines
±
driving a 50Ω load. These buffers drive 300 mA peak and
±
do not oscillate while driving large capacitive loads. The
LM6125 contains unique features not found in power buffers;
these include current limit, thermal shutdown, electronic
shutdown, and an error flag that warns of fault conditions.
Applications
n Line Driving
n Radar
™
These buffers are built with National’s VIP (Vertically Inte-
grated PNP) process which provides fast PNP transistors
that are true complements to the already fast NPN devices.
This advanced junction-isolated process delivers high speed
performance without the need for complex and expensive di-
electric isolation.
n Sonar
Features
n High slew rate: 800 V/µs
Simplified Schematic and Block Diagram
DS009222-1
DS009222-2
Numbers in () are for 14–pin N DIP.
™
VIP is a trademark of National Semiconductor Corporation.
© 1999 National Semiconductor Corporation
DS009222
www.national.com