Datenblatt-pdf.com


EL5393CS Schematic ( PDF Datasheet ) - Elantec Semiconductor

Teilenummer EL5393CS
Beschreibung Triple 300MHz Current Feedback Amplifier
Hersteller Elantec Semiconductor
Logo Elantec Semiconductor Logo 




Gesamt 15 Seiten
EL5393CS Datasheet, Funktion
EL5393C
Triple 300MHz Current Feedback Amplifier
Features
300MHz -3dB bandwidth
4mA supply current (per amplifier)
Single and dual supply operation,
from 5V to 10V
Available in 16-pin QSOP package
Single (EL5193C) and Dual
(EL5293C) available
High speed, 1GHz product
available (EL5191C)
High speed, 6mA, 600MHz
product available (EL5192C,
EL5292C, and EL5392C
Applications
Battery-powered Equipment
Hand-held, Portable Devices
Video Amplifiers
Cable Drivers
RGB Amplifiers
Test Equipment
Instrumentation
Current to Voltage Converters
Ordering Information
Part No
EL5393CS
EL5393CS-T7
EL5393CS-T13
EL5393CU
EL5393CU-T13
Package
16-Pin SO
16-Pin SO
16-Pin SO
16-Pin QSOP
16-Pin QSOP
Tape &
Reel
-
7
13
-
13
Outline #
MDP0027
MDP0027
MDP0027
MDP0040
MDP0040
General Description
The EL5393C is a triple current feedback amplifier with a bandwidth
of 300MHz. This makes these amplifiers ideal for todays high speed
video and monitor applications.
With a supply current of just 4mA per amplifier and the ability to run
from a single supply voltage from 5V to 10V, these amplifiers are also
ideal for hand held, portable or battery powered equipment.
For applications where board space is critical, the EL5393C is offered
in 16-pin QSOP package, as well as an industry standard 16-pin SO.
The EL5393C operates over the industrial temperature range of -40°C
to +85°C.
Pin Configurations
16-Pin SO & QSOP
INA+ 1
NC* 2
VS- 3
NC* 4
INB+ 5
-
+
+
-
16 INA-
15 OUTA
14 VS+
13 OUTB
12 INB-
NC 6
NC* 7
INC+ 8
+
-
11 NC
10 OUTC
9 INC-
EL5393CS, EL5393CU
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.
© 2001 Elantec Semiconductor, Inc.






EL5393CS Datasheet, Funktion
EL5393C
Triple 300MHz Current Feedback Amplifier
Typical Performance Curves
Peaking vs Temperature
2.5
RL=150
2
1.5
AV=1
1
0.5
AV=-1
0
-0.5
-40
10 60 110
Ambient Temperature (°C)
160
Closed Loop Output Impedance vs Frequency
100
10
1
0.1
0.01
0.001
100 1k 10k 100k 1M 10M 100M 1G
Frequency (Hz)
2nd and 3rd Harmonic Distortion vs Frequency
-20
AV=+2
-30 VOUT=2VP-P
RL=100
-40
-50 2nd Order
Distortion
-60
-70
3rd Order
Distortion
-80
-90
1 10 100
Frequency (MHz)
Voltage and Current Noise vs Frequency
1000
100 in+
in-
10 en
1
100 1000 10k 100k 1M 10M
Frequency ()
Supply Current vs Supply Voltage
10
8
6
4
2
0
02468
Supply Voltage (V)
10 12
Two-tone 3rd Order
Input Referred Intermodulation Intercept (IIP3)
25
20
AV=+2
RL=150
15
10
5
0
-5
AV=+2
RL=100
-10
10
Frequency (MHz)
100
6

6 Page









EL5393CS pdf, datenblatt
EL5393C
Triple 300MHz Current Feedback Amplifier
Applications Information
Product Description
The EL5393C is a current-feedback operational ampli-
fier that offers a wide -3dB bandwidth of 300MHz and a
low supply current of 4mA per amplifier. The EL5393C
works with supply voltages ranging from a single 5V to
10V and they are also capable of swinging to within 1V
of either supply on the output. Because of their current-
feedback topology, the EL5393C does not have the nor-
mal gain-bandwidth product associated with voltage-
feedback operational amplifiers. Instead, its -3dB band-
width to remain relatively constant as closed-loop gain is
increased. This combination of high bandwidth and low
power, together with aggressive pricing make the
EL5393C the ideal choice for many low-power/high-
bandwidth applications such as portable, handheld, or
battery-powered equipment.
For varying bandwidth needs, consider the EL5191C
with 1GHz on a 9mA supply current or the EL5192C
with 600MHz on a 6mA supply current. Versions
include single, dual, and triple amp packages with 5-pin
SOT23, 16-pin QSOP, and 8-pin or 16-pin SO outlines.
Power Supply Bypassing and Printed Circuit
Board Layout
As with any high frequency device, good printed circuit
board layout is necessary for optimum performance.
Low impedance ground plane construction is essential.
Surface mount components are recommended, but if
leaded components are used, lead lengths should be as
short as possible. The power supply pins must be well
bypassed to reduce the risk of oscillation. The combina-
tion of a 4.7µF tantalum capacitor in parallel with a
0.01µF capacitor has been shown to work well when
placed at each supply pin.
For good AC performance, parasitic capacitance should
be kept to a minimum, especially at the inverting input.
(See the Capacitance at the Inverting Input section) Even
when ground plane construction is used, it should be
removed from the area near the inverting input to mini-
mize any stray capacitance at that node. Carbon or
Metal-Film resistors are acceptable with the Metal-Film
resistors giving slightly less peaking and bandwidth
because of additional series inductance. Use of sockets,
particularly for the SO package, should be avoided if
possible. Sockets add parasitic inductance and capaci-
tance which will result in additional peaking and
overshoot.
Capacitance at the Inverting Input
Any manufacturers high-speed voltage- or current-
feedback amplifier can be affected by stray capacitance
at the inverting input. For inverting gains, this parasitic
capacitance has little effect because the inverting input is
a virtual ground, but for non-inverting gains, this capac-
itance (in conjunction with the feedback and gain
resistors) creates a pole in the feedback path of the
amplifier. This pole, if low enough in frequency, has the
same destabilizing effect as a zero in the forward open-
loop response. The use of large-value feedback and gain
resistors exacerbates the problem by further lowering
the pole frequency (increasing the possibility of
oscillation.)
The EL5393C has been optimized with a 475feedback
resistor. With the high bandwidth of these amplifiers,
these resistor values might cause stability problems
when combined with parasitic capacitance, thus ground
plane is not recommended around the inverting input pin
of the amplifier.
Feedback Resistor Values
The EL5393C has been designed and specified at a gain
of +2 with RF approximately 500. This value of feed-
back resistor gives 200MHz of -3dB bandwidth at AV=2
with 2dB of peaking. With AV=-2, an RF of approxi-
mately 500gives 175MHz of bandwidth with 0.2dB of
peaking. Since the EL5393C is a current-feedback
amplifier, it is also possible to change the value of RF to
get more bandwidth. As seen in the curve of Frequency
Response for Various RF and RG, bandwidth and peak-
ing can be easily modified by varying the value of the
feedback resistor.
Because the EL5393C is a current-feedback amplifier,
its gain-bandwidth product is not a constant for different
closed-loop gains. This feature actually allows the
EL5393C to maintain about the same -3dB bandwidth.
As gain is increased, bandwidth decreases slightly while
12

12 Page





SeitenGesamt 15 Seiten
PDF Download[ EL5393CS Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
EL5393CTriple 300MHz Current Feedback AmplifierElantec Semiconductor
Elantec Semiconductor
EL5393CSTriple 300MHz Current Feedback AmplifierElantec Semiconductor
Elantec Semiconductor
EL5393CS-T13Triple 300MHz Current Feedback AmplifierElantec Semiconductor
Elantec Semiconductor
EL5393CS-T7Triple 300MHz Current Feedback AmplifierElantec Semiconductor
Elantec Semiconductor
EL5393CUTriple 300MHz Current Feedback AmplifierElantec Semiconductor
Elantec Semiconductor

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche