LMH6628 Dual Wideband, Low Noise, Voltage Feedback Op Amp
January 2003
LMH6628
Dual Wideband, Low Noise, Voltage Feedback Op Amp
General Description
The National LMH6628 is a high speed dual op amp that
offers a traditional voltage feedback topology featuring unity
gain stability and slew enhanced circuitry. The LMH6628鈥檚
low noise and very low harmonic distortion combine to form
a wide dynamic range op amp that operates from a single
(5V to 12V) or dual (
鹵
5V) power supply.
Each of the LMH6628鈥檚 closely matched channels provides
a 300MHz unity gain bandwidth and low input voltage noise
). Low 2nd/3rd harmonic distortion (鈭?5/
density (2nV/
鈭?4dBc at 10MHz) make the LMH6628 a perfect wide dy-
namic range amplifier for matched I/Q channels.
With its fast and accurate settling (12ns to 0.1%), the
LMH6628 is also an excellent choice for wide dynamic
range, anti-aliasing filters to buffer the inputs of hi resolution
analog-to-digital converters. Combining the LMH6628鈥檚 two
tightly matched amplifiers in a single 8-pin SOIC package
reduces cost and board space for many composite amplifier
applications such as active filters, differential line drivers/
receivers, fast peak detectors and instrumentation amplifi-
ers.
The LMH6628 is fabricated using National鈥檚 VIP10
鈩?/div>
com-
plimentary bipolar process.
To reduce design times and assist in board layout, the
LMH6628 is supported by an evaluation board
(CLC730036).
Features
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Wide unity gain bandwidth: 300MHz
Low noise: 2nV/
Low Distortion: 鈭?5/鈭?4dBc (10MHz)
Settling time: 12ns to 0.1%
Wide supply voltage range:
鹵
2.5V to
鹵
6V
High output current:
鹵
85mA
Improved replacement for CLC428
Applications
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High speed dual op amp
Low noise integrators
Low noise active filters
Driver/receiver for transmission systems
High speed detectors
I/Q channel amplifiers
Connection Diagram
8-Pin SOIC
Inverting Frequency Response
20038535
Top View
20038515
漏 2003 National Semiconductor Corporation
DS200385
www.national.com
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