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PDF LMH6724 Data sheet ( Hoja de datos )
| Número de pieza | LMH6724 | |
| Descripción | Single/Dual/Quad 370 MHz 1 mA Current Feedback Op Amp | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LMH6724 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
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August 2005
www.DataSheet4U.com
LMH6723/LMH6724/LMH6725
Single/Dual/Quad 370 MHz 1 mA Current Feedback
Operational Amplifier
General Description
The LMH6723/LMH6724/LMH6725 provides a 260 MHz
small signal bandwidth at a gain of +2 V/V and a 600 V/µs
slew rate while consuming only 1 mA from ±5V supplies.
The LMH6723/LMH6724/LMH6725 supports video applica-
tions with its 0.03% and 0.11˚ differential gain and phase for
NTSC and PAL video signals. The LMH6723/LMH6724/
LMH6725 also offers a flat gain response of 0.1 dB to 100
MHz. Additionally, the LMH6723/LMH6724/LMH6725 can
deliver 110 mA of linear output current. This level of perfor-
mance, as well as a wide supply range of 4.5 to 12V, makes
the LMH6723/LMH6724/LMH6725 an ideal op amp for a
variety of portable applications. The LMH6723/LMH6724/
LMH6725’s small packages (TSSOP, SOIC & SOT23), low
power requirement and high performance allow the
LMH6723/LMH6724/LMH6725 to serve a wide variety of
portable applications.
The LMH6723/LMH6724/LMH6725 is manufactured in Na-
tional’s VIP10™ complimentary bipolar process.
Features
n Large signal bandwidth and slew rate 100% tested
n 370 MHz bandwidth (AV = 1, VOUT = 0.5 VPP) −3 dB
BW
n 260 MHz (AV = +2 V/V, VOUT = 0.5 VPP) −3 dB BW
n 1 mA supply current
n 110 mA linear output current
n 0.03%, 0.11˚ differential gain, phase
n 0.1 dB gain flatness to 100 MHz
n Fast slew rate: 600 V/µs
n Unity gain stable
n Single supply range of 4.5 to 12V
n Improved replacement for CLC450, CLC452, (LMH6723)
Applications
n Line driver
n Portable video
n A/D driver
n Portable DVD
Typical Application
Single Supply Cable Driver
20078936
VIP10™ is a trademark of National Semiconductor Corporation.
© 2005 National Semiconductor Corporation DS200789
www.national.com
1 page  
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications, see the Electrical Characteristics tablesw. ww.DataSheet4U.com
Note 2: Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating of
the device such that TJ = TA. No guarantee of parametric performance is indicated in the electrical tables under conditions of internal self heating where TJ > TA.
See Applications Section for information on temperature derating of this device. Min/Max ratings are based on product characterization and simulation. Individual
parameters are tested as noted.
Note 3: The maximum continuous output current (IOUT) is determined by device power dissipation limitations. See the Power Dissipation section of the Application
Section for more details.
Note 4: Human Body Model, 1.5 kΩ in series with 100 pF. Machine Model, 0Ω In series with 200 pF.
Connection Diagrams
5-Pin SOT23
8-Pin SOIC
Top View
20078937
14-Pin TSSOP & SOIC
Top View
8-Pin SOIC
20078938
Top View
20078944
Ordering Information
Package
5-Pin SOT23
8-Pin SOIC
8-Pin SOIC
14-Pin SOIC
14-Pin TSSOP
Part Number
LMH6723MF
LMH6723MFX
LMH6723MA
LMH6723MAX
LMH6724MA
LMH6724MAX
LMH6725MA
LMH6725MAX
LMH6725MT
LMH6725MTX
Package Marking
AB1A
LMH6723MA
LMH6724MA
LMH6725MA
LMH6725MT
Top View
Transport Media
1k Units Tape and Reel
3k Units Tape and Reel
95 Units/Rail
2.5k Units Tape and Reel
95 Units/Rail
2.5k Units Tape and Reel
55 Units/Rail
2.5k Units Tape and Reel
94 Units/Rail
2.5k Units Tape and Reel
20078947
NSC Drawing
MF05A
M08A
M08A
M14A
MTC14
5 www.national.com
5 Page 
Typical Performance Characteristics AV = 2, RF = 1200Ω, RL = 100Ω, unless otherwise
specified. (Continued)
www.DataSheet4U.com
Crosstalk (LMH6725)
Application Section
GENERAL INFORMATION
The LMH6723/LMH6724/LMH6725 is a high speed current
feedback amplifier manufactured on National Semiconduc-
tor’s VIP10 (Vertically Integrated PNP) complimentary bipo-
lar process. LMH6723/LMH6724/LMH6725 offers a unique
combination of high speed and low quiescent supply current
making it suitable for a wide range of battery powered and
portable applications that require high performance. This
amplifier can operate from 4.5V to 12V nominal supply volt-
ages and draws only 1 mA of quiescent supply current at
10V supplies (±5V typically). The LMH6723/LMH6724/
LMH6725 has no internal ground reference so single or split
supply configurations are both equally useful.
EVALUATION BOARDS
National Semiconductor provides the following evaluation
boards as a guide for high frequency layout and as an aid in
device testing and characterization. Many of the datasheet
plots were measured with these boards.
Device
LMH6723MA
LMH6723MF
LMH6724MA
LMH6725MA
Package
SOIC-8
SOT-23
SOIC-8
SOIC-14
Board Part #
CLC730227
CLC730216
CLC730036
CLC730231
These evaluation boards can be shipped when a device
sample request is placed with National Semiconductor.
FEEDBACK RESISTOR SELECTION
One of the key benefits of a current feedback operational
amplifier is the ability to maintain optimum frequency re-
sponse independent of gain by using appropriate values for
the feedback resistor (RF). The Electrical Characteristics and
Typical Performance plots were generated with an RF of
1200Ω, a gain of +2V/V and ±5V or ±2.5V power supplies
(unless otherwise specified). Generally, lowering RF from it’s
recommended value will peak the frequency response and
extend the bandwidth; however, increasing the value of RF
20078945
will cause the frequency response to roll off faster. Reducing
the value of RF too far below it’s recommended value will
cause overshoot, ringing and, eventually, oscillation.
20078922
FIGURE 1. Frequency Response vs. RF
Figure 1 shows the LMH6723/LMH6724/LMH6725’s fre-
quency response as RF is varied (RL = 100Ω, AV = +2). This
plot shows that an RF of 800Ω results in peaking. An RF of
1200Ω gives near maximal bandwidth and gain flatness with
good stability. Since each application is slightly different it is
worth
given
some
circuit.
experimentation to find
In general a value of RF
the
that
porpotdimucael sR~F0.f1ordBa
of peaking is the best compromise between stability and
maximal bandwidth. Note that it is not possible to use a
current feedback amplifier with the output shorted directly to
the inverting input. The buffer configuration of the LMH6723/
LMH6724/LMH6725 requires a 2000Ω feedback resistor for
stable operation. For other gains see the charts "RF vs. Non
11 www.national.com
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet LMH6724.PDF ] | |
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