EL5193C [ELANTEC]
Single 300MHz Current Feedback Amplifier; 单300MHz的电流反馈放大器型号: | EL5193C |
厂家: | ELANTEC SEMICONDUCTOR |
描述: | Single 300MHz Current Feedback Amplifier |
文件: | 总17页 (文件大小:353K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
EL5193C
Single 300MHz Current Feedback Amplifier
Features
General Description
• 300MHz -3dB bandwidth
• 4mA supply current
• Single and dual supply operation,
The EL5193C is a current feedback amplifier with a bandwidth of
300MHz. This makes these amplifiers ideal for today’s high speed
video and monitor applications.
from 5V to 10V supply span
• Available in 5-pin SOT23 package
• Dual (EL5293C) and triple
(EL5393C) available
• High speed, 1GHz product
available (EL5193C)
• High speed, 6mA, 600MHz
product available (EL5192C,
EL5292C, and EL5392C
With a supply current of just 4mA 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 EL5193C is offered
in the 5-pin SOT23 package, as well as an industry standard 8-pin SO.
The EL5193C operates over the industrial temperature range of -40°C
to +85°C.
Pin Configurations
Applications
• Battery Powered Equipment
• Hand Held, Portable Devices
• Video Amplifiers
• Cable Drivers
• RGB Amplifiers
• Test Equipment
• Instrumentation
• Current to Voltage Converters
SO8
5-Pin SOT23
NC
IN-
1
2
3
4
8
7
6
5
NC*
OUT
1
2
3
5
4
V +
S
V +
S
-
Ordering Information
V -
S
+
IN+
OUT
NC
Tape &
Part No
EL5193CW-T7
EL5193CW-T13
EL5193CS
Package
5-Pin SOT23
5-Pin SOT23
8-Pin SO
Reel
Outline #
MDP0038
MDP0038
MDP0027
MDP0027
MDP0027
IN+
IN-
7”
V -
S
13”
-
EL5193CW
EL5193CS
EL5193CS-T7
EL5193CS-T13
8-Pin SO
7”
8-Pin SO
13”
* This pin must be left disconnected
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.
EL5193C
Single 300MHz Current Feedback Amplifier
Absolute Maximum Ratings (T = 25°C)
A
Values beyond absolute maximum ratings can cause the device to be pre-
maturely damaged. Absolute maximum ratings are stress ratings only and
functional device operation is not implied.
Operating Junction Temperature
Power Dissipation
125°C
See Curves
Pin Voltages
VS- - 0.5V to VS+ +0.5V
-65°C to +150°C
Supply Voltage between VS+ and VS-
Maximum Continuous Output Current
11V
Storage Temperature
Operating Temperature
50mA
-40°C to +85°C
Important Note:
All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are at the
specified temperature and are pulsed tests, therefore: TJ = TC = TA.
Electrical Characteristics
VS+ = +5V, VS- = -5V, RF = 750Ω for AV = 1, RF = 400Ω for AV = 2, RL = 150Ω, TA = 25°C unless otherwise specified.
Parameter
Description
Conditions
Min
Typ
Max
Unit
AC Performance
BW
-3dB Bandwidth
A
V = +1
300
200
20
MHz
MHz
MHz
V/µs
ns
AV = +2
BW1
SR
ts
0.1dB Bandwidth
Slew Rate
V
V
O = -2.5V to +2.5V, AV = +2
OUT = -2.5V to +2.5V, AV = -1
2400
2600
12
0.1% Settling Time
en
Input Voltage Noise
4.4
nV/√Hz
pA/√Hz
pA/√Hz
%
in-
IN- input current noise
IN+ input current noise
Differential Gain Error
Differential Phase Error
17
in+
dG
dP
50
[1]
[1]
AV = +2
AV = +2
0.03
0.04
°
DC Performance
VOS
Offset Voltage
-10
1
5
10
mV
µV/°C
kΩ
TCVOS
ROL
Input Offset Voltage Temperature Coefficient
Transimpedance
Measured from TMIN to TMAX
300
500
Input Characteristics
CMIR
CMRR
-ICMR
+IIN
Common Mode Input Range
±3
42
±3.3
50
V
dB
Common Mode Rejection Ratio
- Input Current Common Mode Rejection
+ Input Current
-6
6
µA/V
µA
µA
kΩ
-60
-30
1
1
60
30
-IIN
- Input Current
RIN
Input Resistance
45
0.5
CIN
Input Capacitance
pF
Output Characteristics
VO
Output Voltage Swing
RL = 150Ω to GND
±3.4
±3.8
95
±3.7
±4.0
120
V
V
RL = 1kΩ to GND
IOUT
Output Current
RL = 10Ω to GND
mA
Supply
IsON
Supply Current
No Load, VIN = 0V
3
4
5
2
mA
dB
PSRR
-IPSR
Power Supply Rejection Ratio
- Input Current Power Supply Rejection
DC, VS = ±4.75V to ±5.25V
DC, VS = ±4.75V to ±5.25V
55
-2
75
µA/V
1. Standard NTSC test, AC signal amplitude = 286mVP-P, f = 3.58MHz
2
EL5193C
Single 300MHz Current Feedback Amplifier
Typical Performance Curves
Non-Inverting Frequency Response (Gain)
Non-Inverting Frequency Response (Phase)
SOT23 Package
SOT23 Package
6
90
A =1
V
A =1
V
2
-2
0
-90
A =2
V
A =2
V
A =5
V
A =5
V
A =10
V
-6
-180
-270
-360
A =10
V
-10
R =750Ω
R =150Ω
L
R =750Ω
F
R =150Ω
L
F
-14
1M
10M
100M
Frequency (Hz)
1G
1M
10M
100M
1G
1G
1G
Frequency (Hz)
Inverting Frequency Response (Gain)
SOT23 Package
Inverting Frequency Response (Phase)
6
2
90
0
A =-1
V
A =-1
V
A =-2
V
-2
-90
A =-2
V
A =-3
V
A =-3
V
-6
-180
-270
-360
-10
R =500Ω
R =150Ω
L
R =500Ω
F
R =150Ω
L
F
-14
1M
10M
100M
1G
1M
10M
100M
Frequency (Hz)
Frequency (Hz)
Frequency Response for Various C
-
IN
Frequency Response for Various R
L
10
6
6
2
R =100Ω
L
R =150Ω
L
2pF added
1pF added
R =500Ω
L
2
-2
-2
-6
-10
-6
0pF added
A =2
V
-10
-14
A =2
V
R =500Ω
F
R =500Ω
F
R =150Ω
L
1M
10M
100M
Frequency (Hz)
1G
1M
10M
100M
Frequency (Hz)
3
EL5193C
Single 300MHz Current Feedback Amplifier
Typical Performance Curves
Frequency Response for Various C
Frequency Response for Various R
L
F
14
10
6
6
2
A =2
V
33pF
340Ω
475Ω
620Ω
R =150Ω
L
R =R =500Ω
F
G
22pF
15pF
-2
750Ω
1.2kΩ
2
-6
A =2
V
8pF
0pF
-2
-10
R =R
G
F
R =150Ω
L
-6
-14
1M
10M
100M
Frequency (Hz)
1G
1M
10M
100M
1G
1G
1G
Frequency (Hz)
Group Delay vs Frequency
Frequency Response for Various Common-mode
Input Voltages
3.5
3
6
2
V
=3V
V =0V
CM
CM
A =2
V
R =500Ω
F
2.5
2
-2
V
CM
=-3V
1.5
1
-6
A =1
V
R =750Ω
F
A =2
V
-10
R =500Ω
F
0.5
0
R =150Ω
L
-14
1M
1M
10M
100M
1G
10M
100M
Frequency (Hz)
Frequency (Hz)
Transimpedance (ROL) vs Frequency
PSRR and CMRR vs Frequency
10M
1M
20
0
0
Phase
PSRR+
-90
100k
10k
1k
-20
-40
-60
-80
PSRR-
-180
-270
-360
Gain
CMRR
100
1k
10k
100k
1M
10M
100M
1G
10k
100k
1M
10M
100M
Frequency (Hz)
Frequency (Hz)
4
EL5193C
Single 300MHz Current Feedback Amplifier
Typical Performance Curves
-3dB Bandwidth vs Supply Voltage for Non-
-3dB Bandwidth vs Supply Voltage for Inverting
inverting Gains
Gains
400
250
R =750Ω
R =150Ω
L
F
A =1
V
350
300
250
200
150
100
50
200
150
100
50
A =-1
V
A =-2
V
A =2
V
A =-5
V
A =5
V
R =500Ω
F
A =10
V
R =150Ω
L
0
0
5
6
7
8
9
10
5
6
7
8
9
10
Total Supply Voltage (V)
Total Supply Voltage (V)
Peaking vs Supply Voltage for Non-inverting Gains
Peaking vs Supply Voltage for Inverting Gains
4
3.5
3
2.5
2
R =750Ω
R =150Ω
L
F
R =500Ω
R =150Ω
L
F
A =1
V
2.5
2
1.5
1
A =-1
V
1.5
1
A =2
V
A =-2
V
0.5
0.5
0
A =10
V
0
5
6
7
8
9
10
5
6
7
8
9
10
Total Supply Voltage (V)
Total Supply Voltage (V)
Non-inverting Frequency Response (Gain)
SO8 Package
Non-inverting Frequency Response (Phase)
SO8 Package
6
2
90
0
A =1
A =2
V
V
A =1
V
A =2
V
-2
-90
A =5
V
A =5
V
-6
-180
-270
-360
A =10
V
A =10
V
-10
-14
R =750Ω
R =150Ω
L
R =750Ω
F
R =150Ω
L
F
1M
10M
100M
1G
1M
10M
100M
1G
Frequency (Hz)
Frequency (Hz)
5
EL5193C
Single 300MHz Current Feedback Amplifier
Typical Performance Curves
Inverting Frequency Response (Gain)
SO8 Package
Inverting Frequency Response (Phase)
SO8 Package
6
90
0
A =-1
V
A =-1
V
A =-2
V
2
-2
A =-2
V
-90
A =-5
V
A =-5
V
-6
-180
-270
-360
-10
R =500Ω
R =150Ω
L
R =500Ω
F
R =150Ω
L
F
-14
1M
10M
100M
1G
1M
10M
100M
1G
Frequency (Hz)
Frequency (Hz)
-3dB Bandwidth vs Temperature for Non-inverting
Gains
-3dB Bandwidth vs Temperature for Inverting
Gains
500
400
300
200
100
0
250
200
150
100
50
R =750Ω
F
R =150Ω
L
A =-1
V
A =1
V
A =-2
V
A =2
V
A =-5
V
A =5
V
R =500Ω
F
R =150Ω
L
A =10
V
0
-40
10
60
Ambient Temperature (°C)
110
160
-40
10
60
Ambient Temperature (°C)
110
160
Peaking vs Temperature
Voltage and Current Noise vs Frequency
2.5
2
1000
100
10
R =150Ω
L
A =1
V
1.5
1
i +
n
i -
n
0.5
0
e
n
A =-1
V
-0.5
1
-40
10
60
Ambient Temperature (°C)
110
160
100
1000
10k
100k
1M
10M
Frequency ()
6
EL5193C
Single 300MHz Current Feedback Amplifier
Typical Performance Curves
Closed Loop Output Impedance vs Frequency
Supply Current vs Supply Voltage
100
10
10
1
8
6
4
2
0
0.1
0.01
0.001
100
1k
10k
100k
1M
10M 100M
1G
100
1
0
2
4
6
8
10
12
100
1
Frequency (Hz)
Supply Voltage (V)
2nd and 3rd Harmonic Distortion vs Frequency
Two-tone 3rd Order
Input Referred Intermodulation Intercept (IIP3)
-20
-30
-40
-50
-60
-70
-80
-90
25
20
15
10
5
A =+2
V
V
A =+2
L
V
=2V
OUT
P-P
R =150Ω
R =100Ω
L
2nd Order
Distortion
3rd Order
Distortion
0
A =+2
V
-5
R =100Ω
L
-10
1
10
Frequency (MHz)
10
Frequency (MHz)
Differential Gain/Phase vs DC Input
Voltage at 3.58MHz
Differential Gain/Phase vs DC Input
Voltage at 3.58MHz
0.03
0.02
0.01
0
0.04
0.03
0.02
0.01
0
A =2
A =1
V
F
V
dP
R =R =500Ω
R =750Ω
R =500Ω
L
F
G
dP
R =150Ω
L
dG
dG
-0.01
-0.02
-0.03
-0.04
-0.05
-0.01
-0.02
-0.03
-0.04
-1
-0.5
0
0.5
-1
-0.5
0
0.5
DC Input Voltage
DC Input Voltage
7
EL5193C
Single 300MHz Current Feedback Amplifier
Typical Performance Curves
Output Voltage Swing vs Frequency
THD<1%
Output Voltage Swing vs Frequency
THD<0.1%
10
10
8
R =500Ω
L
8
6
4
2
0
R =500Ω
L
R =150Ω
L
6
R =150Ω
L
4
2
A =2
V
A =2
V
0
1
10
100
1
10
100
Frequency (MHz)
Frequency (MHz)
Small Signal Step Response
Large Signal Step Response
V =±5V
S
V =±5V
S
R =150Ω
L
R =150Ω
L
A =2
V
A =2
V
R =R =500Ω
R =R =500Ω
F G
F
G
200mV/div
1V/div
10ns/div
10ns/div
Settling Time vs Settling Accuracy
Transimpedance (RoI) vs Temperature
25
20
15
10
5
625
600
575
550
525
A =2
V
R =R =500Ω
F
G
R =150Ω
L
V
STEP
=5V output
P-P
0
0.01
0.1
Settling Accuracy (%)
1
-40
10
60
110
160
Die Temperature (°C)
8
EL5193C
Single 300MHz Current Feedback Amplifier
Typical Performance Curves
PSRR and CMRR vs Temperature
ICMR and IPSR vs Temperature
90
2
80
PSRR
1.5
ICMR+
70
60
1
CMRR
50
IPSR
0.5
40
30
20
10
ICMR-
0
-0.5
-40
10
60
110
160
160
160
-40
10
60
110
160
160
160
Die Temperature (°C)
Die Temperature (°C)
Offset Voltage vs Temperature
Input Current vs Temperature
2
1
60
40
20
0
IB-
0
-20
-40
-60
IB+
-1
-2
-40
10
60
110
-40
10
60
110
Die Temperature (°C)
Temperature (°C)
Positive Input Resistance vs Temperature
Supply Current vs Temperature
60
50
40
30
20
10
0
5
4
3
2
1
0
-40
10
60
110
-40
10
60
110
Temperature (°C)
Temperature (°C)
9
EL5193C
Single 300MHz Current Feedback Amplifier
Typical Performance Curves
Positive Output Swing vs Temperature for Various
Loads
Negative Output Swing vs Temperature for Various
Loads
4.2
-3.5
-3.6
-3.7
-3.8
-3.9
-4
150Ω
4.1
1kΩ
4
3.9
3.8
3.7
3.6
3.5
150Ω
1kΩ
-4.1
-4.2
-40
10
60
110
160
160
100
-40
10
60
110
160
Temperature (°C)
Temperature (°C)
Output Current vs Temperature
Slew Rate vs Temperature
130
125
120
115
4000
3500
3000
2500
Sink
Source
A =2
V
R =R =500Ω
F
G
R =150Ω
L
-40
10
60
110
-40
10
60
110
160
Die Temperature (°C)
Die Temperature (°C)
Maximum Power Dissipation vs Ambient
Temperature
Package Power Dissipation vs Ambient Temp.
JEDEC JESD51-3 Low Effective Thermal Conductivity Test Board
1.4
1.2
1
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
625mW
T
JMAX
=150°C
SO8
391mW
0.8
0.6
0.4
0.2
0
SOT23
-50
0
50
0
25
50
75
100
125
150
Ambient Temperature (°C)
Ambient Temperature (°C)
10
EL5193C
Single 300MHz Current Feedback Amplifier
Pin Descriptions
EL5193C
8-Pin SO
1,5
EL5193C
5-Pin SOT23
Pin Name
NC
Function
Equivalent Circuit
Not connected
Inverting input
2
4
IN-
V +
S
IN+
IN-
V -
S
Circuit1
3
4
6
3
2
1
IN+
VS-
Non-inverting input
Negative supply
Output
(See circuit 1)
OUT
V +
S
OUT
V -
S
Circuit 2
7
8
5
VS+
NC
Positive supply
Not connected (leave this pin disconnected)
11
EL5193C
Single 300MHz Current Feedback Amplifier
Applications Information
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.
Product Description
The EL5193C 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 EL5193C
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 EL5193C 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
EL5193C the ideal choice for many low-power/high-
bandwidth applications such as portable, handheld, or
battery-powered equipment.
Capacitance at the Inverting Input
Any manufacturer’s 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.)
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.
The EL5193C has been optimized with a 475Ω feedback
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.
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.
Feedback Resistor Values
The EL5193C has been designed and specified at a gain
of +2 with RF approximately 500Ω. 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 500Ω gives 175MHz of bandwidth with 0.2dB of
peaking. Since the EL5193C 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.
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,
Because the EL5193C is a current-feedback amplifier,
its gain-bandwidth product is not a constant for different
closed-loop gains. This feature actually allows the
EL5193C to maintain about the same -3dB bandwidth.
As gain is increased, bandwidth decreases slightly while
12
EL5193C
Single 300MHz Current Feedback Amplifier
stability increases. Since the loop stability is improving
with higher closed-loop gains, it becomes possible to
reduce the value of RF below the specified 475Ω and
still retain stability, resulting in only a slight loss of
bandwidth with increased closed-loop gain.
Video performance has also been measured with a 500Ω
load at a gain of +1. Under these conditions, the
EL5193C has dG and dP specifications of 0.03% and
0.04°.
Output Drive Capability
Supply Voltage Range and Single-Supply
Operation
In spite of its low 4mA of supply current, the EL5193C
is capable of providing a minimum of ±95mA of output
current. With a minimum of ±95mA of output drive, the
EL5193C is capable of driving 50Ω loads to both rails,
making it an excellent choice for driving isolation trans-
formers in telecommunications applications.
The EL5193C has been designed to operate with supply
voltages having a span of greater than 5V and less than
10V. In practical terms, this means that the EL5193C
will operate on dual supplies ranging from ±2.5V to
±5V. With single-supply, the EL5193C will operate
from 5V to 10V.
Driving Cables and Capacitive Loads
When used as a cable driver, double termination is
always recommended for reflection-free performance.
For those applications, the back-termination series resis-
tor will decouple the EL5193C from the cable and allow
extensive capacitive drive. However, other applications
may have high capacitive loads without a back-termina-
tion resistor. In these applications, a small series resistor
(usually between 5Ω and 50Ω) can be placed in series
with the output to eliminate most peaking. The gain
resistor (RG) can then be chosen to make up for any gain
loss which may be created by this additional resistor at
the output. In many cases it is also possible to simply
increase the value of the feedback resistor (RF) to reduce
the peaking.
As supply voltages continue to decrease, it becomes nec-
essary to provide input and output voltage ranges that
can get as close as possible to the supply voltages. The
EL5193C has an input range which extends to within 2V
of either supply. So, for example, on +5V supplies, the
EL5193C has an input range which spans ±3V. The out-
put range of the EL5193C is also quite large, extending
to within 1V of the supply rail. On a ±5V supply, the
output is therefore capable of swinging from -----4V to
+4V. Single-supply output range is larger because of the
increased negative swing due to the external pull-down
resistor to ground.
Video Performance
For good video performance, an amplifier is required to
maintain the same output impedance and the same fre-
quency response as DC levels are changed at the output.
This is especially difficult when driving a standard video
load of 150Ω, because of the change in output current
with DC level. Previously, good differential gain could
only be achieved by running high idle currents through
the output transistors (to reduce variations in output
impedance.) These currents were typically comparable
to the entire 4mA supply current of each EL5193C
amplifier. Special circuitry has been incorporated in the
EL5193C to reduce the variation of output impedance
with current output. This results in dG and dP specifica-
tions of 0.03% and 0.04°, while driving 150Ω at a gain
of 2.
Current Limiting
The EL5193C has no internal current-limiting circuitry.
If the output is shorted, it is possible to exceed the Abso-
lute Maximum Rating for output current or power
dissipation, potentially resulting in the destruction of the
device.
Power Dissipation
With the high output drive capability of the EL5193C, it
is possible to exceed the 125°C Absolute Maximum
junction temperature under certain very high load cur-
rent conditions. Generally speaking when RL falls below
about 25Ω, it is important to calculate the maximum
junction temperature (TJMAX) for the application to
determine if power supply voltages, load conditions, or
package type need to be modified for the EL5193C to
13
EL5193C
Single 300MHz Current Feedback Amplifier
remain in the safe operating area. These parameters are
calculated as follows:
T
= T
+ (θ × n × PD
)
MAX
JMAX
MAX
JA
where:
7
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ꢀ ꢀ7KHUPDOꢀ5HVLVWDQFHꢀRIꢀWKHꢀ3DFNDJH
Qꢀ ꢀ1XPEHUꢀRIꢀ$PSOLILHUVꢀLQꢀWKHꢀ3DFNDJH
3' ꢀ ꢀ0D[LPXPꢀ3RZHUꢀ'LVVLSDWLRQꢀRIꢀ(DFKꢀ
θ
$PSOLILHUꢀLQꢀWKHꢀ3DFNDJH
PDMAX for each amplifier can be calculated as follows:
V
OUTMAX
----------------------------
PD
= (2 × V × I
) + (V – V ) ×
OUTMAX
MAX
S
SMAX
S
R
L
where:
9 ꢀ ꢀ6XSSO\ꢀ9ROWDJH
,
ꢀ ꢀ0D[LPXPꢀ6XSSO\ꢀ&XUUHQWꢀRIꢀꢁ$
ꢀ ꢀ0D[LPXPꢀ2XWSXWꢀ9ROWDJHꢀꢂ5HTXLUHGꢃ
9
5 ꢀ ꢀ/RDGꢀ5HVLVWDQFH
14
EL5193C
Single 300MHz Current Feedback Amplifier
Typical Application Circuits
Inverting 200mA Output Current Distribution Amplifier
0.1µF
+5V
IN+
IN-
V +
S
OUT
V -
S
0.1µF
-5V
500Ω
5Ω
0.1µF
V
OUT
+5V
IN+
IN-
V +
S
5Ω
OUT
V -
S
0.1µF
-5V
500Ω
500Ω
V
IN
Fast-Settling Precision Amplifier
500Ω
500Ω
0.1µF
+5V
IN+
V +
S
OUT
IN-
V -
S
0.1µF
500Ω
500Ω
-5V
0.1µF
+5V
IN+
IN-
V +
S
V
IN
OUT
V
OUT
V -
S
0.1µF
-5V
15
EL5193C
Single 300MHz Current Feedback Amplifier
Typical Application Circuits
Differential Line Driver/Receiver
0.1µF
0.1µF
+5V
IN+
IN-
+5V
IN+
IN-
V +
S
V +
S
OUT
OUT
V -
S
V -
S
0.1µF
0.1µF
0.1µF
-5V
-5V
0.1µF
500Ω
250Ω
250Ω
500Ω
500Ω
V
+
OUT
1kΩ
1kΩ
+5V
IN+
IN-
240Ω
0.1µF
+5V
IN+
IN-
V +
S
0.1µF
OUT
V +
S
V
OUT
-
OUT
V
OUT
V -
S
0.1µF
V -
S
-5V
0.1µF
-5V
500Ω
500Ω
V
IN
500Ω
500Ω
Receiver
Transmitter
16
EL5193C
Single 300MHz Current Feedback Amplifier
General Disclaimer
Specifications contained in this data sheet are in effect as of the publication date shown. Elantec, Inc. reserves the right to make changes in the cir-
cuitry or specifications contained herein at any time without notice. Elantec, Inc. assumes no responsibility for the use of any circuits described
herein and makes no representations that they are free from patent infringement.
WARNING - Life Support Policy
Elantec, Inc. products are not authorized for and should not be used
within Life Support Systems without the specific written consent of
Elantec, Inc. Life Support systems are equipment intended to sup-
port or sustain life and whose failure to perform when properly used
in accordance with instructions provided can be reasonably
Elantec Semiconductor, Inc.
675 Trade Zone Blvd.
Milpitas, CA 95035
Telephone: (408) 945-1323
(888) ELANTEC
expected to result in significant personal injury or death. Users con-
templating application of Elantec, Inc. Products in Life Support
Systems are requested to contact Elantec, Inc. factory headquarters
to establish suitable terms & conditions for these applications. Elan-
tec, Inc.’s warranty is limited to replacement of defective
components and does not cover injury to persons or property or
other consequential damages.
Fax:
(408) 945-9305
European Office: +44-118-977-6020
Japan Technical Center: +81-45-682-5820
Printed in U.S.A.
17
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