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PDF LMH6738 Data sheet ( Hoja de datos )
| Número de pieza | LMH6738 | |
| Descripción | Very Wideband / Low Distortion Triple Op Amp | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LMH6738 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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July 2004
LMH6738
Very Wideband, Low Distortion Triple Op Amp
General Description
The LMH6738 is a very wideband, DC coupled monolithic
operational amplifier designed specifically for ultra high reso-
lution video systems as well as wide dynamic range systems
requiring exceptional signal fidelity. Benefiting from Nation-
al’s current feedback architecture, the LMH6738 offers a
gain range of ±1 to ±10 while providing stable, operation
without external compensation, even at unity gain. At a gain
of +2 the LMH6738 supports ultra high resolution video
systems with a 400 MHz 2 VPP –3 dB Bandwidth. With 12-bit
distortion levels through 30 MHz (RL = 100Ω), 2.3 nV/
Hz input referred noise, the LMH6738 is the ideal driver or
buffer for high speed flash A/D and D/A converters. Wide
dynamic range systems such as radar and communication
receivers requiring a wideband amplifier offering exceptional
signal purity will find the LMH6738’s low input referred noise
and low harmonic distortion make it an attractive solution.
Features
n 750 MHz −3 dB small signal bandwidth (AV = +1)
n −85 dBc 3rd harmonic distortion (20 MHz)
n 2.3 nV/
Hz input noise voltage
n 3300 V/µs slew rate
n 33 mA supply current (11.3 mA per op amp)
n 90 mA linear output current
n 0.02/0.01 Diff. Gain / Diff. Phase (RL = 150Ω)
Applications
n RGB video driver
n High resolution projectors
n Flash A/D driver
n D/A transimpedance buffer
n Wide dynamic range IF amp
n Radar/communication receivers
n DDS post-amps
n Wideband inverting summer
n Line driver
Connection Diagram
16-Pin SSOP
Top View
20097510
VIP10™ is a trademark of National Semiconductor Corporation.
© 2004 National Semiconductor Corporation DS200975
www.national.com
1 page  
Typical Performance Characteristics AV = +2, VCC = ±5V, RL = 100Ω, RF = 549Ω; unless otherwise
specified). (Continued)
Frequency Response vs. Capacitive Load
Series Output Resistance vs. Capacitive Load
20097514
Open Loop Gain and Phase
Distortion vs. Frequency
20097519
Distortion vs. Output Voltage
20097526
20097525
Distortion vs. Supply Voltage
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5
20097518
www.national.com
5 Page 
Application Section (Continued)
ESD PROTECTION
The LMH6738 is protected against electrostatic discharge
(ESD) on all pins. The LMH6738 will survive 2000V Human
Body model and 200V Machine model events.
Under closed loop operation the ESD diodes have no effect
on circuit performance. There are occasions, however, when
the ESD diodes will be evident. If the LMH6738 is driven by
a large signal while the device is powered down the ESD
diodes will conduct.
The current that flows through the ESD diodes will either exit
the chip through the supply pins or will flow through the
device, hence it is possible to power up a chip with a large
signal applied to the input pins. Shorting the power pins to
each other will prevent the chip from being powered up
through the input.
11 www.national.com
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LMH6738.PDF ] | |
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