LMH6628 Datasheet, PDF (1/11 Pages) National Semiconductor (TI) – 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’s
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 (±5V) power supply.
Each of the LMH6628’s closely matched channels provides
a 300MHz unity gain bandwidth and low input voltage noise
density (2nV/
). Low 2nd/3rd harmonic distortion (−65/
−74dBc 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’s 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’s VIP10™ com-
plimentary bipolar process.
To reduce design times and assist in board layout, the
LMH6628 is supported by an evaluation board
(CLC730036).
Features
n Wide unity gain bandwidth: 300MHz
n Low noise: 2nV/
n Low Distortion: −65/−74dBc (10MHz)
n Settling time: 12ns to 0.1%
n Wide supply voltage range: ±2.5V to ±6V
n High output current: ±85mA
n Improved replacement for CLC428
Applications
n High speed dual op amp
n Low noise integrators
n Low noise active filters
n Driver/receiver for transmission systems
n High speed detectors
n I/Q channel amplifiers
Connection Diagram
8-Pin SOIC
Inverting Frequency Response
Top View
20038535
20038515
© 2003 National Semiconductor Corporation DS200385
www.national.com