LM7121IM5X
| Model | LM7121IM5X |
| Description | 235 MHz Tiny Low Power Voltage Feedback Amplifier |
| PDF file | Total 19 pages (File size: 668K) |
| Chip Manufacturer | NSC |
LM7121 235 MHz Tiny Low Power Voltage Feedback Amplifier
August 1999
LM7121
235 MHz Tiny Low Power Voltage Feedback Amplifier
General Description
The LM7121 is a high performance operational amplifier
which addresses the increasing AC performance needs of
video and imaging applications, and the size and power con-
straints of portable applications.
The LM7121 can operate over a wide dynamic range of sup-
ply voltages, from 5V (single supply) up to
±
15V (see the Ap-
plication Information section for more details). It offers an ex-
cellent speed-power product delivering 1300V/µs and 235
MHz Bandwidth (−3 dB, A
V
= +1). Another key feature of this
operational amplifier is stability while driving unlimited ca-
pacitive loads.
Due to its Tiny SOT23-5 package, the LM7121 is ideal for
designs where space and weight are the critical parameters.
The benefits of the Tiny package are evident in small por-
table electronic devices, such as cameras, and PC video
cards. Tiny amplifiers are so small that they can be placed
anywhere on a board close to the signal source or near the
input to an A/D converter.
Features
(Typical unless otherwise noted) V
S
=
±
15V
n
Easy to use voltage feedback topology
n
Stable with unlimited capacitive loads
n
Tiny SOT23-5 package — typical circuit layout takes half
the space of SO-8 designs
n
Unity gain frequency: 175 MHz
n
Bandwidth (−3 dB, A
V
= +1, R
L
= 100Ω): 235 MHz
n
Slew rate: 1300V/µs
n
Supply Voltages SO-8: 5V to
±
15V
SOT23-5: 5V to
±
5V
n
Characterized for: +5V,
±
5V,
±
15V
n
Low supply current: 5.3 mA
Applications
n
n
n
n
n
n
Scanners, color fax, digital copiers
PC video cards
Cable drivers
Digital cameras
ADC/DAC buffers
Set-top boxes
Connection Diagrams
8-Pin SO-8
5-Pin SOT23
DS012348-2
DS012348-1
Top View
Top View
Ordering Information
Package
8-Pin SO-8
5-Pin SOT23-5
Ordering Information
LM7121IM
LM7121IMX
LM7121IM5
LM7121IM5X
NSC Drawing
Number
M08A
M08A
MA05A
MA05A
Package
Marking
LM7121IM
LM7121IM
A03A
A03A
Rails
2.5k Tape and Reel
1k Tape and Reel
3k Tape and Reel
Supplied As
© 1999 National Semiconductor Corporation
DS012348
www.national.com
