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PDF EL2030CM Data sheet ( Hoja de datos )
| Número de pieza | EL2030CM | |
| Descripción | 120 MHz Current Feedback Amplifier | |
| Fabricantes | Elantec | |
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EL2030C
120 MHz Current Feedback Amplifier
Features
b3 dB bandwidth e 120 MHz
AV e 1
b3 dB bandwidth e 110 MHz
AV e 2
0 01% differential gain and
0 01 differential phase (NTSC
PAL)
0 05% differential gain and
0 02 differential phase (HDTV)
Slew rate 2000 V ms
65 mA output current
Drives g10V into 200X load
Characterized at g5V and g15V
Low voltage noise
Current mode feedback
Settling time of 40 ns to 0 25%
for a 10V step
Output short circuit protected
Low cost
Applications
Video gain block
Video distribution amplifier
HDTV amplifier
Residue amplifiers in ADC
Current to voltage converter
Coax cable driver
Ordering Information
Part No
EL2030CN
EL2030CM
Temp Range
Package Outline
b40 C to a85 C 8-Pin P-DIP MDP0031
b40 C to a85 C 20-Lead SOL MDP0027
General Description
The EL2030 is a very fast wide bandwidth amplifier optimized
for gains between b10 and a10 Built using the Elantec mono-
lithic Complementary Bipolar process this amplifier uses cur-
rent mode feedback to achieve more bandwidth at a given gain
than a conventional voltage feedback operational amplifier
Due to its wide operating supply range (g15V) and extremely
high slew rate of 2000 V ms the EL2030 drives g10V into 200X
at a frequency of 30 MHz while achieving 110 MHz of small
signal bandwidth at AV e a2 This bandwidth is still 95 MHz
for a gain of a10 On g5V supplies the amplifier maintains a
90 MHz bandwidth for AV e a2 When used as a unity gain
buffer the EL2030 has a 120 MHz bandwidth with the gain
precision and low distortion of closed loop buffers
The EL2030 features extremely low differential gain and phase
a low noise topology that reduces noise by a factor of 2 over
competing amplifiers and settling time of 40 ns to 0 25% for a
10V step The output is short circuit protected In addition da-
tasheet limits are guaranteed for g5V and g15V supplies
Elantec’s products and facilities comply with applicable quality
specifications See Elantec document QRA-1 Processing
Monolithic Integrated Circuits
Connection Diagrams
Mini DIP
SOL
Top View
2030 – 1
Note Non-designated pins are no connects
and are not electrically connected internally
Manufactured under U S Patent No 4 893 091
Top View
2030 – 3
Note All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication however this data sheet cannot be a ‘‘controlled document’’ Current revisions if any to these
specifications are maintained at the factory and are available upon your request We recommend checking the revision level before finalization of your design documentation
1989 Elantec Inc
1 page  
EL2030C
120 MHz Current Feedback Amplifier
Typical Performance Curves Contd
2030 – 7
Figure 2 HDTV and Wideband Video Differential Gain and Phase Test Set-Up
Differential Gain Error
vs Frequency for Various
DC Output Levels
Differential Phase Error
vs Frequency for Various
DC Output Levels
Risetime and Overshoot vs RF
for AV e a1
Bandwidth and Peaking vs
RF for AV e a1
gSlew Rate vs Supply Voltage
2030 – 8
5
5 Page 
EL2030C
120 MHz Current Feedback Amplifier
Video Applications Contd
Video signals are 1V peak-peak in amplitude
from sync tip to peak white There are 100 IRE
(0 714V) of picture (from black to peak white of
the transmitted signal) and 40 IRE (0 286V) of
sync in a composite video signal (140 IRE e 1V)
For video applications where a gain of two is
used (double termination) the output of the vid-
eo amplifier will be a maximum of 2V peak-peak
With g5V power supply the EL2030 output
swing of 3 5V is sufficient to satisfy the video
output swing requirements The EL2030 can
drive two double terminated coax cables under
these conditions With g15V supplies driving
four double terminated cables is feasible
Although the EL2030’s video characteristics (dif-
ferential gain and phase) are impressive with
g5V supplies at NTSC and PAL frequencies it
can be optimized when the supplies are increased
to g15V especially at 30 MHz HDTV applica-
tions This is primarily due to a reduction in in-
ternal parasitic junction capacitance with in-
creased power supply voltage
The following table summarizes the behavior of
the EL2030 at g5V and g15V for NTSC In ad-
dition 30 MHz HDTV data is included Refer to
the differential gain and phase typical perform-
ance curves for more data
gVs Rload Av DGain DPhase
Comments
15V 75X 1 0 02% 0 03 Single terminated
15V 150X 1 0 02% 0 02 Double terminated
5V 150X 1 0 05% 0 02 Double terminated
15V 75X 2 0 02% 0 08 Single terminated
15V 150X 2 0 01% 0 02 Double terminated
5V 150X 2 0 03% 0 09 Double terminated
15V 150X 2 0 05% 0 02 HDTV Double terminated
Equivalent Circuit
2030 – 18
11
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| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet EL2030CM.PDF ] | |
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