Datasheet EL5392CU-T13, EL5392CU, EL5392CS-T7, EL5392CS-T13, EL5392CS Datasheet (ELANT)

EL5392C

Triple 600MHz Current Feedback Amplifier

EL5392C

Features

• 600MHz -3dB band w idth

• 6mA supply current (per amplifier)

• Single and dual sup p l y op er a tion,

from 5V to 10V

• Av ai la ble in 16 -p in QSOP p ack ag e

• Single (EL5192C) and Dual

(EL5292C) available

• High speed, 1GHz product
available (EL519 1C )

• Low power, 4mA, 300MHz
product available (EL5193C,
EL5293C, and EL5393C

Applications

• Video Amplifiers

• Cable Drivers

• RGB Amplifiers

• Test Equipment

• Instrumentation

• Current to Voltage Converters

Ordering Information

Part No Package

EL5392CS 16-Pin SO - MDP0027 EL5392CS-T7 16-Pin SO 7” MDP0027 EL5392CS-T13 16-Pin SO 13” MDP0027 EL5392CU 16-Pin QSOP - MDP0040 EL5392CU-T13 16-Pin QSOP 13” MDP0040

Tape &

Reel Outline #

General Description

The EL5392C is a triple current feedback amplifier with a very high
bandwidth of 600MHz. This makes this amplifier ideal for today’s
high speed video and monitor applications .

With a supply current of just 6mA per amplifier and the ability to run
from a single supply voltage from 5V to 10V, the EL5392C is also
ideal for hand held, portable or battery powered equipment.

For applications where board space is critical, the EL5392C is offered
in the 16-pin QSOP package, as well as an industry standard 16-pin
SO. The EL5392C operates over th e industrial t emperature ra nge of ­40°C to +85°C.

Pin Configurations

16-Pin SO & QSOP

1

INA+

2

NC*

3

V

-

S

4

NC*

INB+

5

NC

6

NC*

7

INC+

8 9

EL5392CS, EL5392CU

-

+

+

-

+

-

16

INA-

15

OUTA

14

VS+

13

OUTB

12

INB-

11

NC

10

OUTC

INC-

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 . W e recommend checking the revision level befo re finalization of your design documentation.

© 2001 Elantec Semiconductor, Inc.

April 26, 2001

EL5392C

Triple 600MHz Current Feedb ack Amplif ier

EL5392C

Absolute Maximum Ratings (T

Values beyond absolute maximum ratings can cause the device to be pre­maturely damaged. Absolute maximum ratings are stress ratings only and
functional device operation is not implied.

Supply Voltage between V
Maximum Continuous Output Current 50mA

+ and VS-11V

S

= 25°C)

A

Operating Junction Temperature 125°C
Power Dissipation See Curves
Pin Voltages V

- - 0.5V to VS+ +0.5V

S

Storage Temperature -65°C to +150°C
Operating Temperature -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: T

= TC = TA.

J

Electrical Characteristics

VS+ = +5V, VS- = -5V, RF = 750Ω for AV = 1, RF = 375Ω for AV = 2, RL = 150Ω, TA = 25°C unless otherwise specified.

Parameter Description Conditions Min Typ Max Unit

AC Performance

BW -3dB Bandwidth A

BW1 0.1dB Bandwidth 25 MHz
SR Slew Rate V
ts 0.1% Settling Time V
C

S

e

n

i

- IN- input current noise 20 pA/√Hz

n

i

+ IN+ input current noise 50 pA/√Hz

n

dG Differential Gain Error
dP Differential Phase Error

Channel Separation f = 5MHz 60 dB
Input Voltage Noise 4.1 nV/√Hz

[1]

[1]

DC Performance

V
T
R

OS
CVOS
OL

Offset Voltage -10 1 10 mV
Input Offset Voltage Temperature Coefficient Measured from T
Transimpediance 200 400 kΩ

Input Characteristics

CMIR Common Mode Input Range ±3 ±3.3 V CMRR Common Mode Rejection Ratio 42 50 dB +I

IN

-I

IN

R

IN

C

IN

+ Input Current -60 3 60 µA

- Input Current -40 4 40 µA
Input Resistance 37 kΩ
Input Capacitance 0.5 pF

Output Characteristics

V

I

OUT

O

Output Voltage Swing RL = 150Ω to GND ±3.4 ±3.7 V

Output Current RL = 10Ω to GND 95 120 mA

Supply

Is

ON

Supply Current No Load, V

PSRR Power Supply Rejection Ratio DC, V

-IPSR - Input Current Power Supply Rejection DC, V

1. Standard NTSC test, AC signal amplitude = 286mV

P-P

= +1 600 MHz

V

A

= +2 300 MHz

V

= -2.5V to +2.5V, AV = [phone] V/µs

O

= -2.5V to +2.5V, AV = -1 9 ns

OUT

AV = +2 0.015 % AV = +2 0.04 °

to T

MIN

MAX

R

= 1kΩ to GND ±3.8 ±4.0 V

L

= 0V 5 6 7.25 mA

IN

= ±4.75V to ±5.25V 55 75 dB

S

= ±4.75V to ±5.25V -2 2 µA/V

S

5µV/°C

, f = 3.58MHz

2

Typical Performance Curves

EL5392C

EL5392C

Triple 600MHz Current Feedback Amplifier

Non-Inverting Frequency Response (Gain)

6

2

-2

-6

Normalized Magnitude (dB)

-10
RF=750Ω

RL=150Ω

-14

1M 10M 100M 1G

Inverting Frequency Response (Gain)

6

2

-2

-6

Normalized Magnitude (dB)

-10
RF=375Ω

=150Ω

R

L

-14

1M 10M 100M 1G

AV=1

AV=5

AV=10

Frequency (Hz)

AV=-1 AV=-2

AV=-5

Frequency (Hz)

AV=2

Non-Inverting Frequency Response (Phase)

90

0

-90

Phase (°)

-180

-270
RF=750Ω

RL=150Ω

-360

1M 10M 100M 1G

Inverting Frequency Response (Phase)

90

0

-90

Phase (°)

-180

-270

RF=375Ω

=150Ω

R

L

-360

1M 10M 100M 1G

AV=5

AV=10

Frequency (Hz)

AV=-1

AV=-2

AV=-5

Frequency (Hz)

AV=1

AV=2

Frequency Response for Various CIN-

10

2pF added

6

2

-2

Normalized Magnitude (dB)

AV=2

-6
RF=375Ω

RL=150Ω

-10
1M 10M 1G

1pF added

0pF added

100M

Frequency (Hz)

Frequency Response for Various R

6

2

-2

-6

Normalized Magnitude (dB)

-10
AV=2

RF=375Ω

-14

1M 10M 100M 1G

RL=500Ω

Frequency (Hz)

L

RL=100ΩRL=150Ω

3

EL5392C

Triple 600MHz Current Feedb ack Amplif ier

EL5392C

Typical Performance Curves

Frequency Response for Various C

14

10

6

2

Normalized Magnitude (dB)

AV=2

-2
RF=375Ω

RL=150Ω

-6

1M 10M 100M 1G

Frequency (Hz)

Group Delay vs Frequency

3.5

3

2.5

2

1.5

Group Delay (ns)

1

0.5

0

1M 10M 1G

Frequency (Hz)

12pF added

8pF added

0pF added

AV=2

=375Ω

R

F

AV=1

=750Ω

R

F

L

100M

Frequency Response for Various R

6

2

-2

-6

Normalized Magnitude (dB)

AV=2

-10
RG=R

F

RL=150Ω

-14

1M 10M 100M 1G

Frequency (Hz)

Frequency Response for Various Common-mode
Input Voltages

6

2

-2

-6

Normalized Magnitude (dB)

AV=2

-10

=375Ω

R

F

RL=150Ω

-14

1M 10M 1G

Frequency (Hz)

F

250Ω 375Ω

620Ω

750Ω

VCM=3V VCM=0V

VCM=-3V

100M

475Ω

Transimpedance (ROL) vs Frequency

10M

1M

)

Ω

100k

10k

Magnitude (

1k

100

1k

10k 100k 1M 10M 100M 1G

Phase

Gain

Frequency (Hz)

0

-90

-180

-270

-360

PSRR and CMRR vs Frequency

20

0

-20

Phase (°)

-40

PSRR/CMRR (dB)

-60

-80

10k

PSRR-

100k 1M 10M 1G100M

Frequency (Hz)

PSRR+

CMRR

4

Typical Performance Curves

EL5392C

EL5392C

Triple 600MHz Current Feedback Amplifier

-3dB Bandwidth vs Supply Voltage for Non­inverting Gains

800

RF=750Ω
RL=150Ω

600

400

-3dB Bandwidth (MHz)
200

0

567 10

Total Supply Voltage (V)

Peaking vs Supply Voltage for Non-inverting Gains

4

AV=1

3

2

Peaking (dB)

1

AV=2 AV=10

0

567 1089

Total Supply Voltage (V)

AV=1

AV=2
AV=5 AV=10

89

RF=750Ω
RL=150Ω

-3dB Bandwidth vs Supply Voltage for Inverting
Gains

350

300

250

200

150

-3dB Bandwidth (MHz)

100

RF=375Ω

50

RL=150Ω

0

567 1089

Peaking vs Supply Voltage for Inverting Gains

4

3

2

Peaking (dB)

1

0

567 1089

AV=-1

AV=-2

AV=-5

Total Supply Voltage (V)

AV=-1

AV=-2

AV=-5

Total Supply Voltage (V)

RF=375Ω
RL=150Ω

-3dB Bandwidth vs Temperature for Non-inverting
Gains

1400

1200

1000

800

600

400

-3dB Bandwidth (MHz)
200

0

AV=1

AV=2

-40 10 60 160

AV=5 AV=10

Ambient Temperature (°C)

RF=750Ω
RL=150Ω

110

-3dB Bandwidth vs Temperature for Inverting
Gains

500

400

300

200

-3dB Bandwidth (MHz)
100

0

AV=-1

AV=-2

AV=-5

-40 10 60 160
Ambient Temperature (°C)

RF=375Ω
RL=150Ω

110

5

EL5392C

Triple 600MHz Current Feedb ack Amplif ier

EL5392C

Typical Performance Curves

Peaking vs Temperature

2

RL=150Ω

1.5

1

0.5

Peaking (dB)

0

-0.5

-50 0 50 100

Closed Loop Output Impedance vs Frequency

100

10

)

Ω

1

0.1

Output Impedance (

0.01

0.001
100 10k 100M 1G1M

-50

AV=1

AV=-1

Ambient Temperature (°C)

100k 10M1k

Frequency (Hz)

AV=-2

AV=2

Voltage and Current Noise vs Frequency

1000

Hz)

Hz)

√

100

√

10

Voltage Noise (nV/

, Current Nois e (pA/

1
100

Supply Current vs Supply Voltage

10

8

6

4

Supply Current (mA)

2

0

0

in+

in-

e

n

1000 10k 100k 10M1M

Supply Voltage (V)

Frequency ()

12210864

2nd and 3rd Harmonic Distortion vs Frequency

-20
AV=+2

-30
V

=2V

OUT

P-P

RL=100Ω

-40

-50

-60

-70

-80

Harmonic Distortion (dBc)

-90

-100
1

2nd Order

Distortion

3rd Order
Distortion

10 100

Frequency (MHz)

Two-tone 3rd Order
Input Referred Intermodulation Intercept (IIP3)

30
25
20
15
10

5
0

Input Power Intercept (dBm)

-5
AV=+2

RL=100Ω

-10

-15
10

Frequency (MHz)

AV=+2
RL=150Ω

100 200

6

Typical Performance Curves

EL5392C

EL5392C

Triple 600MHz Current Feedback Amplifier

Differential Gain/Phase vs DC Input
Voltage at 3.58MHz

0.03
AV=2

0.02

RF=RG=375Ω

=150Ω

R

L

0.01

0

-0.01

-0.02

dG (%) or dP (°)

-0.03

-0.04

-0.05

-1 -0.5 0 0.5 1
DC Input Voltage

Output Voltage Swing vs Frequency
THD<1%

9
8

)

7

PP

6
5
4
3

Output Voltage Swing (V

2
1

AV=2 AV=2

0

1

RL=150Ω

10 100

Frequency (MHz)

dP

dG

RL=500Ω

Differential Gain/Phase vs DC Input
Voltage at 3.58MHz

0.03
AV=1

0.02
RF=750Ω

=500Ω

R

L

0.01

0

-0.01

-0.02

dG (%) or dP (°)

-0.03

-0.04

-0.05

-0.06

-1 -0.5 0 0.5 1
DC Input Voltage

Output Voltage Swing vs Frequency
THD<0.1%

10

RL=500Ω

8

)

PP

Output Voltage Swing (V

RL=150Ω

6

4

2

0

1

10 100

Frequency (MHz)

dP

dG

Small Signal Step Response Large Signal Step Response

VS=±5V
RL=150Ω
AV=2
RF=RG=375Ω

200mV/div

10ns/div

1V/div

7

10ns/div

VS=±5V
RL=150Ω
AV=2
RF=RG=375Ω

EL5392C

Triple 600MHz Current Feedb ack Amplif ier

EL5392C

Typical Performance Curves

Settling Time vs Settling Accuracy

25

20

15

10

Settling Time (ns)

5

0

0.01 0.1 1
Settling Accuracy (%)

PSRR and CMRR vs Temperature

90
80
70
60
50
40

PSRR/CMRR (dB)

30
20
10

-40 10 60 110 160
Die Temperature (°C)

PSRR

CMRR

AV=2
RF=RG=375Ω

=150Ω

R

L

V

STEP

=5V

P-P

output

Transimpedance (RoI) vs Temperature

500

450

)

Ω

400

RoI (k

350

300

-40 10 60 110 160
Die Temperature (°C)

ICMR and IPSR vs Temperature

2.5

2

1.5

1

0.5

ICMR/IPSR (µA/V)

0

-0.5

-1

-40 10 60 110 160

ICMR+

IPSR

ICMR-

Die Temperature (°C)

Offset Voltage vs Temperature

3

2

1

(mV)

OS

V

0

-1

-2

-40 10 60 110 160
Die Temperature (°C)

Input Current vs Temperature

60

40

20

0

-20

Input Current (µA)

-40

-60

-80

-40 10 110 160

60

Temperature (°C)

IB-

IB+

8

Typical Performance Curves

EL5392C

EL5392C

Triple 600MHz Current Feedback Amplifier

Positive Input Resistance vs Temperature

50
45
40
35
30

)

Ω

25

+ (k

IN

R

20
15
10

5
0

-40 10 160
Temperature (°C)

Positive Output Swin g v s T emper atu re for Var iou s
Loads

4.2

4.1

4

3.9

(V)

OUT

3.8

V

3.7

3.6

3.5

-40 10 50 160

1kΩ

150Ω

Temperature (°C)

11060

110

Supply Current vs Temperature

8
7
6
5
4
3

Supply Current (mA)

2
1
0

-40 10 110 160

Negative Output Swing vs T emperature for Vari ous
Loads

-3.5

-3.6

-3.7

-3.8

(V)

OUT

-3.9

V

-4

-4.1

-4.2

-40 10 110 160

60

Temperature (°C)

150Ω

1kΩ

60

Temperature (°C)

Output Current vs Temperature

135

130

125

(mA)

OUT

I

120

115

-40 10 60 110 160

Sink

Source

Die Temperature (°C)

Slew Rate vs Temperature

4600
4400
4200
4000
3800
3600

Slew Rate (V/µ S)

3400
3200
3000

-40 10 60 110 160
Die Temperature (°C)

AV=2
RF=RG=375Ω
RL=150Ω

9

EL5392C

Triple 600MHz Current Feedb ack Amplif ier

EL5392C

Typical Performance Curves

Channel-to-Channel Isolation vs Frequency

0

-20

-40

Gain (dB)

-60

-80

-100
100k 1M 10M 100M

Frequency (Hz)

400M

Package Power Dissipation vs Ambient Temp.

JEDEC JESD51-3 Low Effectiv e Therm al Conductivity Test Board

1

0.9
909mW

0.8

0.7

0.6

633mW

0.5

0.4

0.3

Power Dissipation (W)

0.2

0.1

0

0 50 100 150

S

O

1

6

(

0

1

.

1

1

0

5

°

0

C

”

)

/

W

Q

S

O

P

1

1

6

5

8

°

C

/

W

25 75 125

Ambient Temperature (°C)

10

Pin Descriptions

EL5392C

16-Pin SO

1 1 INA+ Non-inverting input, channel A

EL5392C

16-Pin QSOP

Pin Name Function Equivalent Circuit

EL5392C

EL5392C

Triple 600MHz Current Feedback Amplifier

VS+

IN-IN+

2, 4, 7 2 , 4, 7 NC Not connected (leave disconnected)

33V 5 5 INB+ Non-inverting input, channel B (See circuit 1)

6, 11 6, 11 NC Not connected

8 8 INC+ Non-inverting input, channel C (See circuit 1) 9 9 INC- Inverting input, channel C (See circuit 1)

10 10 OUTC Output, channel C

12 12 INB- Inverting input, channel B (See circuit 1) 13 13 OUTB Output, channel B (See circuit 2) 14 14 V 15 15 OUTA Output, channel A (See circuit 2) 16 16 INA- Inverting input, channel A (See circuit 1)

- Negative supply

S

+ Positive supply

S

Circuit 1

VS-

VS+

OUT

VS-

Circuit 2

11

EL5392C

Triple 600MHz Current Feedb ack Amplif ier

EL5392C

Applications Information

Product Description

The EL5392C is a current-feedback operational ampli­fier that offers a wide -3dB bandwidth of 600MHz and a
low supply current of 6mA per amplifier. The EL5392C
works with supply voltages ranging from a single 5V to
10V and they are also capabl e of swi ngi ng t o wi thin 1 V
of either supply on the output. Because of their current­feedback topolo gy , t he EL 5 39 2C do es not hav e t he nor ­mal gain-bandwidth product associated with voltage­feedback operational amp lifiers. Instead, its -3dB band­width to remain relatively c onstant as c losed-loop gain is
increased. This combination of high bandwidth and low
power, together with aggressive pricing make the
EL5392C the ideal choice for many low-power/high­bandwidth applications such as portable, handheld, or
battery-powered equipment.

For varying bandwidth needs, con sider the EL5191C
with 1GHz on a 9mA supply current or the EL5193C
with 300MHz on a 4mA supply current. Versions
include single, dua l, a nd tri ple amp pa cka ges w ith 5-p in
SOT23, 16-pin QSOP, and 8-pin or 16-pin SO out li nes.

Power Supply Bypassing and Printed Circuit
Board Layout

As with any hig h fr e que ncy d evi ce , good pr in te d c irc uit
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 pi ns must be well
bypassed to reduce the risk of os cilla tion. The co mbin a­tion of a 4.7µF tantalum capacitor in parallel with a

0.01µ F capacitor has been shown to work well when
placed at each supply pin.

For good AC performance, parasitic capacitan ce should
be kept to a minimum, especially at the inverting input.
(See the Capacitance at the Inverting Input section) Even
when ground plane construction i s used, it should be
removed from the area near the inverting input to mini­mize 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 ind uctance and c apaci­tance which will result in additional peaking and
overshoot.

Capacitance at the Inverting Input

Any manufacturer’s high-speed voltage- or current­feedback amplifier can b e affected by stra y capacitan ce
at the inverting input. For inverting gains, this parasitic
capacitance has little e ffect because t he inverting i nput is
a virtual ground, but for non- inve rtin g gain s, this ca pac­itance (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 ze ro in the forward open­loop 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 EL5392C has been optimized with a 375Ω 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 recommende d aroun d the inv erting in put pi n
of the amplifier.

Feedback Resistor Values

The EL5392C has been des ig ned and spec ifi ed at a gai n
of +2 with R
back resistor gives 300MHz of -3dB bandwidth at A
with 2dB of peaking. With A
275MHz of bandwidth with 1dB of peaki ng. Since the
EL5392C is a current-feedback a mplifier, i t is als o pos­sible to change the value of R
As seen in the curve of Frequency Response for Various
RF and RG, bandwidth and pea king can be easily modi­fied by varying the value of the feedback resi stor.

Because the EL5392C is a current-feedback amplifier,
its gain-bandwidth product is not a constant for different
closed-loop gains. This feature actually allows the
EL5392C to maintain about the same -3dB bandwidth.
As gain is increased, bandwidth decreases slightly while
stability increases. Since the loop stability is improving

approximately 375Ω. This value of feed-

F

=-2, an RF of 375Ω gives

V

to get more bandwidth.

F

=2

V

12

EL5392C

Triple 600MHz Current Feedback Amplifier

EL5392C

with higher closed-loop gains, it becomes possible to
reduce the value of R
still retain stability, resulting in only a slight loss of
bandwidth with inc reased closed-loop gain.

below the specified 375Ω and

F

Supply Voltage Range and Single-Supply
Operation

The EL5392C 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 EL5392C
will operate on dual supplies ranging from ±2.5V to
±5V. With single-supply, the EL5392C will operate
from 5V to 10V.

As supply voltages continue to decrease, it becomes nec­essary to provide input and output voltage ranges that
can get as close as possible to the supply voltages. The
EL5392C has an input ran ge which e xtends to with in 2V
of either supply. So, for example, on ±5V supplies, the
EL5392C has an input ran ge wh ic h span s ±3V. The out­put range of the EL5392C 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-sup ply output range is larger because of the
increased negative swing due to the external pull-down
resistor t o gr o u n d.

Video Performance

For good video performance, an amplifier is required to
maintain the same output impedance and the same fre­quency response as DC level s are changed at the output.
This is especially difficult when driving a standard vid eo
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 6mA supply current of each EL5392C
amplifier. Special circuitry has been incorporated in the
EL5392C to reduce the variation of output impedance
with current output. This results in dG and dP specifica­tions of 0.015% and 0.04°, while driving 150 Ω at a gain
of 2.

Video performance has also been measured with a 500Ω
load at a gain of +1. Under these conditions, the

EL5392C has dG and dP specifications of 0.03% and

0.05°, respectively.

Output Drive Capability

In spite of its low 6mA of supply current, the EL5392C
is capable of providin g a minimu m of ±95mA of ou tput
current. With a minimum of ±95mA of output drive, the
EL5392C is capable of driving 50Ω loads to both rails,
making it an excellent choice for driving isolation trans­formers in telecommunications applications.

Driving Cables and Capacitive Loads

When used as a cable driver, double termination is
always recommended for reflection-free perfo rmance.
For those applications, the back-term ina tion series re sis­tor will decouple the EL5392C from the c ab le an d allo w
extensive capacitive drive. However, other applications
may have high capaci tiv e loa ds wit hout a b ack -te rmina­tion resistor. In these applications, a small series resist or
(usually between 5Ω and 50Ω) can be placed in series
with the output to eliminate most peaking. The gain
resistor (R
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 (R
the peaking.

) can then be c hosen to make up for any ga in

G

) to reduce

F

Current Limiting

The EL5392C has no internal current-limiting circuitry.
If the output is shorted, it is possible to ex ceed the Abso ­lute Maximum Rating for o utput current or power
dissipation, potentially resultin g in the d estr uctio n o f th e
device.

Power Dissipation

With the high output drive ca p ability of the EL5392C, it
is possible to exceed the 125°C Absolute Maximum
junction temperature under certain very high load cur­rent conditions. Generally speaking when R
about 25Ω, it is important to calculate the maximum
junction temperature (T
determine if power supply voltages, load conditions, or
package type need t o be modified for the EL 5392C to

) for the application to

JMAX

falls below

L

13

EL5392C

Triple 600MHz Current Feedb ack Amplif ier

EL5392C

remain in the safe operating area. These parameters are
calculated as follows:

T

JMAXTMAXθJA

nPD

××()+=

where:

 0D[LPXP$PELHQW7HPSHUDWXUH

7

0$;

θ

 7KHUPDO5HVLVWDQFHRIWKH3DFNDJH

-$

Q 1XPEHURI$PSOLILHUVLQWKH3DFNDJH

 0D[LPXP3RZHU'LVVLSDWLRQRI(DFK

3'

0$;

$PSOLILHULQWKH3DFNDJH

PD

for each amplifier can be calculated as follows:

MAX

PD

MAX

2( VSI

SMAX

) VS( V

OUTMAX

where:

96 6XSSO\9ROWDJH

 0D[LPXP6XSSO\&XUUHQWRI$

,

60$;

9

2870$;

5

/

 0D[LPXP2XWSXW9ROWDJH5HTXLUHG

 /RDG5HVLVWDQFH

MAX

V

----------------------------

)

×–+××=

OUTMAX

R

L

14

EL5392C

Triple 600MHz Current Feedb ack Amplif ier

EL5392C

General Disclaimer

Specifications contained in this data sheet are in effect as of the publicat ion date shown. Elantec, Inc. re serves the r ight to make changes in th e cir­cuitry or specifications cont ained herein at a ny time without notice. Elantec , Inc. assumes no res ponsibili ty for t he us e of an y circuits descr ibed
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 intend ed to sup-

Elantec Semiconductor, Inc.

675 Trade Zone Blvd.
Milpitas, CA 95035
Telephone: [phone]

Fax: [phone]
European Office: [phone]
Japan Technical Center: [phone]

April 26, 2001

(888) ELANTEC

port or sustain life and whose failure to perform when properly used
in accordance with instructions provided can be reasonably
expected to result in significant personal injury or death. Users con­templating applicatio n of Elantec, Inc. P roducts in Li fe Support
Systems are requested to contact Elantec, Inc. factory headquarters
to establish suitable terms & conditions for these applications. Elan­tec, Inc. ’s warranty is limited to replacement of defective
components and does not cov er injury to persons or prop erty or
other consequential damages.

15

Printed in U.S.A.