LM6121/LM6221/LM6321
High Speed Buffer
General Description
These high speed unity gain buffers slew at 800 V/μs and
have a small signal bandwidth of 50 MHz while driving a 50
load. They can drive
±
300 mA peak and do not oscillate
while driving large capacitive loads. The LM6121 family are
monolithic ICs which offer performance similar to the
LH0002 with the additional features of current limit and ther-
mal shutdown.
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.
Features
n
High slew rate:
n
Wide bandwidth:
n
Slew rate and bandwidth 100% tested
n
Peak output current:
n
High input impedance:
n
LH0002H pin compatible
n
No oscillations with capacitive loads
n
5V to
±
15V operation guaranteed
n
Current and thermal limiting
n
Fully specified to drive 50
lines
800 V/μs
50 MHz
±
300 mA
5 M
Applications
n
Line Driving
n
Radar
n
Sonar
Simplified Schematic
VIP
is a trademark of National Semiconductor Corporation.
DS009223-1
Numbers in ( ) are for 8-pin N DIP.
May 1998
L
1999 National Semiconductor Corporation
DS009223
www.national.com