Page 1
EL2260C/EL2460C
Dual/Quad 130 MHz Current Feedback Amplifiers
EL2260C/EL2460C January 1995, Rev B
Features
# 130 MHz 3 dB bandwidth
ea
(A
2)
V
# 180 MHz 3 dB bandwidth
ea
(A
1)
V
# 0.01% differential gain,
e
R
500X
L
# 0.01
differential phase,
§
e
R
500X
L
# Low supply current, 7.5 mA per
amplifier
# Wide supply range,
g
2V tog15V
# 80 mA output current (peak)
# Low cost
# 1500 V/ms slew rate
# Input common mode range to
within 1.5V of supplies
# 35 ns settling time to 0.1%
Applications
# Video amplifiers
# Cable drivers
# RGB amplifiers
# Test equipment amplifiers
# Current to voltage converter
Ordering Information
Part No. Temp. Range Package Outline
EL2260CNb40§Ctoa85§C 8-Pin P-DIP MDP0031
EL2260CSb40§Ctoa85§C 8-Pin SOIC MDP0027
EL2460CNb40§Ctoa85§C 14-Pin P-DIP MDP0031
EL2460CSb40§Ctoa85§C 14-Pin SOIC MDP0027
General Description
The EL2260C/EL2460C are dual/quad current feedback operational amplifiers with
a
of
2. Built using the Elantec proprietary monolithic complementary bipolar process, these amplifers use current mode feedback to achieve more bandwidth at a given gain than a conventional voltage feedback operational amplifier.
The EL2260C/EL2460C are designed to drive a double terminated 75X coax cable to video levels. Differential gain and
phase are excellent when driving both loads of 500X (
k
0.01§) and double terminated 75X cables (0.025%/0.1§).
The amplifiers can operate on any supply voltage from 4V
g
(
2V) to 33V (g16.5V), yet consume only 7.5 mA per amplifier
at any supply voltage. Using industry standard pinouts, the
EL2260C is available in 8-pin P-DIP and 8-pin SO packages,
while the EL2460C is available in 14-pin P-DIP and 14-pin SO
packages.
Elantec’s facilities comply with MIL-I-45208A and offer applicable quality specifications. For information on Elantec’s processing, see the Elantec document, QRA-1: Elantec’s Process-
ingÐMonolithic Products.
b
3 dB bandwidth of 130 MHz at a gain
Connection Diagrams
EL2260C SO, P-DIP
Packages
Ý
EL2460C SO, P-DIP
Packages
k
0.01%/
Top View
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.
©
1992 Elantec, Inc.
2260– 1
2260– 2
Top View
Page 2
EL2260C/EL2460C
Dual/Quad 130 MHz Current Feedback Amplifiers
Absolute Maximum Ratings
a
Voltage between V
Voltage between
Current into
S
a
IN andbIN
a
IN orbIN 10 mA
Internal Power Dissipation See Curves
Important Note:
All parameters having Min/Max specifications are guaranteed. The Test Level column indicates the specific device testing actually
performed during production and Quality inspection. Elantec performs most electrical tests using modern high-speed automatic test
equipment, specifically the LTX77 Series system. Unless otherwise noted, all tests are pulsed tests, therefore T
Test Level Test Procedure
I 100% production tested and QA sample tested per QA test plan QCX0002.
II 100% production tested at T
III QA sample tested per QA test plan QCX0002.
IV Parameter is guaranteed (but not tested) by Design and Characterization Data.
V Parameter is typical value at T
and V
T
MAX
b
S
and T
A
per QA test plan QCX0002.
MIN
e
(T
25§C)
A
a
33V
g
Operating Ambient Temperature Range
6V
Operating Junction Temperature
Plastic Packages 150
Storage Temperature Range
Output Current
e
25§C and QA sample tested at T
e
25§C for information purposes only.
A
b
40§Ctoa85§C
g
§
50 mA
b
65§Ctoa150§C
e
e
T
TA.
J
C
e
25§C,
A
Open Loop DC Electrical Characteristics
e
g
V
S
Parameter Description Conditions Temp
V
OS
TC V
OS
a
I
IN
b
I
IN
CMRR Common Mode Rejection V
b
ICMR
PSRR Power Supply Rejection
b
IPSR
e
15V, R
L
150X,T
A
Input Offset Voltage V
Average Offset Voltage
Drift (Note 1)
a
Input Current V
b
Input Current V
Ratio (Note 2)
b
Input Current Common V
Mode Rejection (Note 2)
Ratio (Note 3)
b
Input Current Power 25
Supply Rejection (Note 3)
e
25§C unless otherwise specified
e
g
5V,g15V 25§C 2 10 I mV
S
e
g
5V,g15V 25§C 0.5 5 I mA
S
e
g
5V,g15V 25§C 5 25 I mA
S
e
g
5V,g15V
S
e
g
5V,g15V 25§C 0.2 5 I mA/V
S
Limits Test Level
EL2260C
EL2460C
15 III mV
T
MIN,TMAX
Min Typ Max
Full 10 V mV/
T
MIN,TMAX
T
MIN,TMAX
10 III mA
35 III mA
Full 50 55 II dB
T
MIN,TMAX
5 III mA/V
Full 75 95 II dB
C 0.2 5 I mA/V
§
T
MIN,TMAX
5 III mA/V
Units
C
§
C
TDis3.3in
2
Page 3
EL2260C/EL2460C
Dual/Quad 130 MHz Current Feedback Amplifiers
Open Loop DC Electrical Characteristics
e
g
V
S
Parameter Description Conditions Temp
R
OL
a
R
IN
a
C
IN
CMIR Common Mode Input Range V
V
O
I
SC
I
S
15V, R
L
e
150X,T
e
25§C unless otherwise specified
A
Transimpedance V
(Note 4) R
a
Input Resistance Full 1.5 3.0 II MX
a
Input Capacitance 25§C 2.5 V pF
Output Voltage Swing R
Output Short Circuit V
Current (Note 5) V
Supply Current V
(Per Amplifier) T
e
g
15V 25§C 500 2000 I kX
S
e
400X T
L
e
g
V
S
e
R
150X T
L
e
g
S
e
g
V
S
e
400X,25
L
e
g
V
15V T
S
e
R
150X,
L
e
g
15V
V
S
e
R
150X,25
L
e
g
V
5V T
S
e
g
S
e
g
S
e
g
S
e
g
V
S
MIN,TMAX
5V 25§C 500 1800 I kX
MIN,TMAX
15V 25§C
5V 25§C
MIN,TMAX
25
MIN,TMAX
5V,
15V
25
15V 25§C 7.5 11.0 I mA
MIN,TMAX
5V 25§C 5.4 8.5 I mA
T
MIN,TMAX
Ð Contd.
Limits Test Level
Min Typ Max
EL2260C
EL2460C
250 III kX
250 III kX
g
13.5 V V
g
3.5 V V
C
§
C
§
C
§
C 60 100 150 I mA
§
g12g
g
g
g
13.5 I V
11 III V
g
12 V V
3.0g3.7 I V
2.5 III V
11.0 III mA
8.5 III mA
Units
TDis3.8in
3
Page 4
EL2260C/EL2460C
Dual/Quad 130 MHz Current Feedback Amplifiers
Closed Loop AC Electrical Characteristics
e
g
V
S
Parameter Description Test Conditions
BW
SR Slew Rate R
tr,t
f
t
pd
OS Overshoot (Note 8) V
t
s
dG Differential Gain R
dP Differential Phase R
Note 1: Measured from T
Note 2: V
Note 3: The supplies are moved fromg2.5V tog15V.
Note 4: V
Note 5: A heat sink is required to keep junction temperature below absolute maximum when an output is shorted.
Note 6: Slew Rate is with V
Note 7: DC offset from
Note 8: All AC tests are performed on a ‘‘warmed up’’ part, except for Slew Rate, which is pulse tested.
15V, A
CM
V
CM
V
CM
OUT
V
ea
e
2, R
560X,R
F
b
3 dB Bandwidth V
(Note 8)
(Notes 6, 8)
Rise Time, V
Fall Time, (Note 8)
Propagation Delay
(Note 8)
0.1% Settling Time V
(Note 8) A
(Notes 7, 8)
(Notes 7, 8) R
to T
e
e
e
e
MIN
g
10V for V
g
3V for V
g
2V for V
g
7V for V
e
S
e
S
e
S
e
S
OUT
b
0.714V througha0.714V, AC amplitude 286 mV
L
e
150X,T
e
25§C unless otherwise noted
A
Limits Test Level
Min Typ Max
e
g
S
e
g
V
S
e
g
V
S
e
g
V
S
e
400X 1000 1500 IV V/ms
L
e
R
1KX,R
F
e
R
400X
L
e
OUT
15V, A
15V, A
5V, A
5V, A
g
500mV
ea
2 130 V MHz
V
ea
1 180 V MHz
V
ea
2 100 V MHz
V
ea
1 110 V MHz
V
e
110X
G
1500 V V/ms
2.7 V ns
3.2 V ns
e
g
500 mV 0 V %
e
g
10V
eb
e
e
e
e
e
e
1, R
1K
L
150X 0.025 V %
500X 0.006 V %
150X 0.1 V deg (§)
500X 0.005 V deg (§)
Full
35 V ns
25§C
T
MIN,TMAX
e
g
2V for V
e
g
5V.
S
MAX
g
15V and T
g
5V and T
g
5V and T
g
15V, and V
OUT
OUT
V
L
R
L
L
L
.
A
e
A
e
A
OUT
froma10V tob10V and measured at the 25% and 75% points.
,fe3.58 MHz.
p-p
EL2260C
EL2460C
Units
TDis3.7in
4
Page 5
Dual/Quad 130 MHz Current Feedback Amplifiers
Typical Performance Curves
EL2260C/EL2460C
Non-Inverting Frequency
Response (Gain)
Inverting Frequency
Response (Gain)
Non-Inverting Frequency
Response (Phase)
Inverting Frequency
Response (Phase)
Frequency Response
for Various R
Frequency Response for
Various R
F
L
and R
G
3 dB Bandwidth vs Supply
Voltage for A
V
eb
1
Peaking vs Supply Voltage
eb
for A
1
V
5
3 dB Bandwidth vs
Temperature for A
V
eb
1
2260– 3
Page 6
EL2260C/EL2460C
Dual/Quad 130 MHz Current Feedback Amplifiers
Typical Performance Curves
3 dB Bandwidth vs Supply
Voltage for A
3 dB Bandwidth vs Supply
Voltage for A
V
V
ea
ea
1
2
Ð Contd.
Peaking vs Supply Voltage
ea
for A
Peaking vs Supply Voltage
for A
V
V
ea
1
2
3 dB Bandwidth vs Temperature
ea
for A
3 dB Bandwidth vs Temperature
for A
V
V
ea
1
2
3 dB Bandwidth vs Supply
Voltage for A
V
ea
10
Peaking vs Supply Voltage
ea
for A
10
V
6
3 dB Bandwidth vs Temperature
ea
for A
10
V
2260– 4
Page 7
EL2260C/EL2460C
Dual/Quad 130 MHz Current Feedback Amplifiers
Typical Performance Curves
Frequency Response
for Various C
PSRR and CMRR
vs Frequency
L
Ð Contd.
Frequency Response
for Various C
2nd and 3rd Harmonic
Distortion vs Frequency
b
IN
Channel to Channel
Isolation vs Frequency
Transimpedance (R
vs Frequency
OL
)
Voltage and Current Noise
vs Frequency
Closed-Loop Output
Impedance vs Frequency
7
Transimpedance (R
vs Die Temperature
OL
)
2260– 5
Page 8
EL2260C/EL2460C
Dual/Quad 130 MHz Current Feedback Amplifiers
Typical Performance Curves
Offset Voltage
vs Die Temperature
(4 Samples)
a
Input Resistance
vs Die Temperature
Ð Contd.
Supply Current
vs Die Temperature
(Per Amplifier)
Input Current
vs Die Temperature
Supply Current
vs Supply Voltage
(Per Amplifier)
a
Input Bias Current
vs Input Voltage
Output Voltage Swing
vs Die Temperature
Short Circuit Current
vs Die Temperature
8
PSRR & CMRR
vs Die Temperature
2260– 6
Page 9
EL2260C/EL2460C
Dual/Quad 130 MHz Current Feedback Amplifiers
Typical Performance Curves
Differential Gain
vs DC Input Voltage,
e
R
150
L
Differential Gain
vs DC Input Voltage,
e
500
R
L
Ð Contd.
Differential Phase
vs DC Input Voltage,
e
R
150
L
Differential Phase
vs DC Input Voltage,
e
R
500
L
Small Signal
Pulse Response
Large Signal
Pulse Response
Slew Rate
vs Supply Voltage
9
Slew Rate
vs Temperature
2260– 7
Page 10
EL2260C/EL2460C
Dual/Quad 130 MHz Current Feedback Amplifiers
Typical Performance Curves
Settling Time
vs Settling Accuracy
Long Term Settling Error vs Ambient Temperature
Ð Contd.
14-Lead Plastic DIP
Maximum Power Dissipation
vs Ambient Temperature
8-Lead Plastic DIP
Maximum Power Dissipation
14-Lead Plastic SO
Maximum Power Dissipation
vs Ambient Temperature
8-Lead Plastic SO
Maximum Power Dissipation
vs Ambient Temperature
Burn-In Circuits
EL2260C
2260– 11
EL2460C
2260– 8
2260– 12
10
Page 11
EL2260C/EL2460C
Dual/Quad 130 MHz Current Feedback Amplifiers
Differential Gain and Phase Test Circuit
2260– 9
Simplified Schematic
(One Amplifier)
2260– 10
11
Page 12
EL2260C/EL2460C
Dual/Quad 130 MHz Current Feedback Amplifiers
Applications Information
Product Description
The EL2260C/EL2460C are dual and quad current mode feedback amplifiers that offer wide
bandwidths and good video specifications at
moderately low supply currents. They are built
using Elantec’s proprietary complimentary bipolar process and are offered in industry standard
pin-outs. Due to the current feedback architecture, the EL2260C/EL2460C closed-loop 3 dB
bandwidth is dependent on the value of the feedback resistor. First the desired bandwidth is selected by choosing the feedback resistor, R
then the gain is set by picking the gain resistor,
R
. The curves at the beginning of the Typical
G
Performance Curves section show the effect of
varying both R
somewhat dependent on the power supply voltage. As the supply voltage is decreased, internal
junction capacitances increase, causing a reduction in closed loop bandwidth. To compensate for
this, smaller values of feedback resistor can be
used at lower supply voltages.
and RG. The 3 dB bandwidth is
F
Power Supply Bypassing and Printed
Circuit Board Layout
As with any high frequency device, good printed
circuit board layout is necessary for optimum
performance. Ground plane construction is highly recommended. Lead lengths should be as short
as possible, below (/4
must be well bypassed to reduce the risk of oscillation. A 1.0 mF tantalum capacitor in parallel
with a 0.01 mF ceramic capacitor is adequate for
each supply pin.
For good AC performance, parasitic capacitances
should be kept to a minimum, especially at the
inverting input (see Capacitance at the Inverting
Input section). This implies keeping the ground
plane away from this pin. Carbon resistors are
acceptable, while use of wire-wound resistors
should not be used because of their parasitic inductance. Similarly, capacitors should be low inductance for best performance. Use of sockets,
particularly for the SO packages, should be
avoided. Sockets add parasitic inductance and capacitance which will result in peaking and overshoot.
. The power supply pins
×
, and
F
Capacitance at the Inverting Input
Due to the topology of the current feedback amplifier, stray capacitance at the inverting input
will affect the AC and transient performance of
the EL2260C/EL2460C when operating in the
non-inverting configuration. The characteristic
curve of gain vs. frequency with variations of
b
C
emphasizes this effect. The curve illus-
IN
trates how the bandwidth can be extended to beyond 200 MHz with some additional peaking
with an additional 2 pF of capacitance at the
b
V
pin for the case of A
IN
ues of capacitance will be required to obtain similar effects at higher gains.
In the inverting gain mode, added capacitance at
the inverting input has little effect since this
point is at a virtual ground and stray capacitance
is therefore not ‘‘seen’’ by the amplifier.
V
ea
2. Higher val-
Feedback Resistor Values
The EL2260C and EL2460C have been designed
and specified with R
This value of feedback resistor yields extremely
flat frequency response with little to no peaking
out to 130 MHz. As is the case with all current
feedback amplifiers, wider bandwidth, at the expense of slight peaking, can be obtained by reducing the value of the feedback resistor. Inversely, larger values of feedback resistor will cause
rolloff to occur at a lower frequency. By reducing
R
to 430X, bandwidth can be extended to
F
170 MHz with under 1 dB of peaking. Further
reduction of R
to 195 MHz with about 2.5 dB of peaking. See
the curves in the Typical Performance Curves
section which show 3 dB bandwidth and peaking
vs. frequency for various feedback resistors and
various supply voltages.
to 360X increases the bandwidth
F
e
F
560X for A
V
ea
Bandwidth vs Temperature
Whereas many amplifier’s supply current and
consequently 3 dB bandwidth drop off at high
temperature, the EL2260C/EL2460C were designed to have little supply current variations
with temperature. An immediate benefit from
this is that the 3 dB bandwidth does not drop off
drastically with temperature. With V
and A
150 MHz to 110 MHz over the entire die junction
temperature range of 0
V
ea
2, the bandwidth only varies from
CkTk150§C.
§
e
g
S
15V
2.
12
Page 13
EL2260C/EL2460C
Dual/Quad 130 MHz Current Feedback Amplifiers
Applications Information
Ð Contd.
Supply Voltage Range
The EL2260C/EL2460C has been designed to operate with supply voltages from
g
2V tog15V.
Optimum bandwidth, slew rate, and video characteristics are obtained at higher supply voltages.
However, at
at A
V
g
ea
2V supplies, the 3 dB bandwidth
2 is a respectable 70 MHz. The following figure is an oscilloscope plot of the
EL2260C at
e
560X, driving a load of 150X, showing a clean
g
600 mV signal at the output.
g
2V supplies, A
ea
V
2, R
e
R
F
2260– 13
If a single supply is desired, values froma4V to
a
30V can be used as long as the input common
mode range is not exceeded. When using a single
supply, be sure to either 1) DC bias the inputs at
an appropriate common mode voltage and AC
couple the signal, or 2) ensure the driving signal
is within the common mode range of the
EL2260C/EL2460C.
caused by a power dissipation differential (before
and after the voltage step) . For A
V
the inverting mode configuration, this tail does
not appear since the input stage does not experience the large voltage change as in the noninverting mode. With A
V
eb
1, 0.01% settling
time is slightly greater than 100 ns.
Power Dissipation
The EL2260C/EL2460C amplifiers combine both
high speed and large output current drive capa-
G
bility at a moderate supply current in very small
packages. It is possible to exceed the maximum
junction temperature allowed under certain supply voltage, temperature, and loading conditions.
To ensure that the EL2260C/EL2460C remain
within their absolute maximum ratings, the following discussion will help to avoid exceeding
the maximum junction temperature.
The maximum power dissipation allowed in a
package is determined by its thermal resistance
and the amount of temperature rise according to
P
DMAX
e
T
JMAX
b
T
AMAX
i
JA
The maximum power dissipation actually produced by an IC is the total quiescent supply current times the total power supply voltage plus
the power in the IC due to the load, or
e
P
DMAX
a
N *#2 * VS* I
b
(V
S
V
S
OUT
eb
V
)*
R
1, due to
OUT
J
L
Settling Characteristics
The EL2260C/EL2460C offer superb settling
characteristics to 0.1%, typically in the 35 ns to
40 ns range. There are no aberrations created
from the input stage which often cause longer
settling times in other current feedback amplifiers. The EL2260/EL2460 are not slew rate limited, therefore any size step up to
g
10V gives ap-
proximately the same settling time.
As can be seen from the Long Term Settling Error curve, for A
ea
1, there is approximately a
V
0.035% residual which tails away to 0.01% in
about 40 ms. This is a thermal settling error
where N is the number of amplifiers per package,
and I
is the current per amplifier. (To be more
S
accurate, the quiescent supply current flowing in
the output driver transistor should be subtracted
from the first term because, under loading and
due to the class AB nature of the output stage,
the output driver current is now included in the
second term.)
In general, an amplifier’s AC performance degrades at higher operating temperature and lower
supply current. Unlike some amplifiers, such as
the LT1229 and LT1230, the EL2260C/EL2460C
13
Page 14
EL2260C/EL2460C
Dual/Quad 130 MHz Current Feedback Amplifiers
Applications Information
Ð Contd.
maintain almost constant supply current over
temperature so that AC performance is not degraded as much over the entire operating temperature range. Of course, this increase in performance doesn’t come for free. Since the current has
increased, supply voltages must be limited so
that maximum power ratings are not exceeded.
Each amplifier in the EL2260C/EL2460C consume typically 7.5 mA and maximum 10.0 mA.
The worst case power in an IC occurs when the
output voltage is at half supply, if it can go that
far, or its maximum value if it cannot reach
half supply. If we assume that the
EL2260C/EL2460C is used for double terminated
video cable driving applications (R
and the gain
ea
2, then the maximum output
e
150X),
L
voltage is 2V, and the average output voltage is
1.4V. If we set the two P
each other, and solve for V
equations equal to
Dmax
, we can get a family
S
of curves for various packages and conditions according to:
RL* (T
e
V
S
b
JA
T
AMAX
JMAX
N * i
(2 * IS* RL)aV
)
OUT
a
(V
OUT
2
)
The following curve shows supply voltage (gVS)
vs. temperature for the various packages assum-
ea
ing A
V
The curves include worst case conditions (I
10 mA and all amplifiers operating at V
e
2V).
Supply Voltage vs Ambient Temperature
for All Packages of EL2260C/EL2460C
2, R
e
L
150, and V
OUT
peake2V.
S
peak
OUT
e
The curves do not include heat removal or forcing air, or the simple fact that the package will
probably be attached to a circuit board, which
can also provide some form of heat removal.
Larger temperature and voltage ranges are possible with heat removal and forcing air past the
part.
Current Limit
The EL2260C/EL2460C have internal current
limits that protect the circuit in the event of the
output being shorted to ground. This limit is set
at 100 mA nominally and reduces with junction
temperature. At a junction temperature of 150
C,
§
the current limits at about 65 mA. If any one
output is shorted to ground, the power dissipation could be well over 1W, and much greater if
all outputs are shorted. Heat removal is required
in order for the EL2260C/EL2460C to survive an
indefinite short.
Channel to Channel Isolation
Due to careful biasing connections within the internal circuitry of the EL2260C/EL2460C, exceptionally good channel to channel isolation is obtained. Isolation is over 70 dB at video frequencies of 4 MHz, and over 65 dB up to 10 MHz. The
EL2460C isolation is improved an additional
10 dB, up to about 5 MHz, for amplifiers A to B
and amplifiers C to D. Isolation is improved another 8 dB for amplifiers A to C and amplifiers B
to D. See the curve in the Typical Performance
Curves section for more detail.
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 resistor will decouple the EL2260C
and EL2460C from the capacitive cable and allow
extensive capacitive drive. However, other applications may have high capacitive loads without
termination resistors. In these applications, an
additional small value (5X –50X) resistor in se-
ries with the output will eliminate most peaking.
The gain resistor, R
, can be chosen to make up
G
for the gain loss created by this additional series
resistor at the output.
2260– 14
14
Page 15
EL2260C/EL2460C
Dual/Quad 130 MHz Current Feedback Amplifiers
EL2260C/EL2460C Macromodel
* Revision A, March 1993
* AC Characteristics used C
* Connections:
*
*
*
*
*
.subckt EL2260C/EL 3 2 7 4 6
*
* Input Stage
*
e1100301.0
vis 10 9 0V
h2 9 12 vxx 1.0
r1211130
l1 11 12 25nH
iinp 3 0 0.5mA
iinm205mA
r12 3 0 2Meg
*
* Slew Rate Limiting
*
h1 13 0 vis 600
r2 13 14 1K
d1 14 0 dclamp
d2 0 14 dclamp
*
* High Frequency Pole
*
*e2 30 0 14 0 0.00166666666
l3 30 17 0.43mH
c5 17 0 0.27pF
r5 17 0 500
*
* Transimpedance Stage
*
g10181701.0
ro1 18 0 2Meg
cdp 18 0 2.285pF
*
* Output Stage
*
q141819qp
q271820qn
q371921qn
q442022qp
r7 21 6 4
r8 22 6 4
ios1 7 19 2mA
ios2 20 4 2mA
*
b
(pin 2)e1 pF; R
IN
a
input
b
input
l
ll
lll
a
Vsupply
b
llll
Vsupply
output
e
F
lllll
TABWIDE
560X
TDis6.5in
15
Page 16
EL2260C/EL2460C
Dual/Quad 130 MHz Current Feedback Amplifiers
EL2260C/EL2460C Macromodel
* Supply Current
*
ips 7 4 2mA
*
* Error Terms
*
ivos 0 23 2mA
vxx 23 0 0V
e4240301.0
e5250701.0
e6260401.0
r9 24 23 562
r10 25 23 1K
r11 26 23 1K
*
* Models
*
.model qn npn (is
.model qp pnp (is
.model dclamp d (is
.ends
e5eb
15 bfe100 tfe0.1ns)
e5eb
15 bfe100 tfe0.1ns)
e1eb
30 ibve0.266 bve2.24 ne4)
Ð Contd.
TDis2.6in
2260– 15
16
Page 17
BLANK
17
Page 18
BLANK
18
Page 19
BLANK
19
Page 20
EL2260C/EL2460C
Dual/Quad 130 MHz Current Feedback Amplifiers
EL2260C/EL2460CJanuary 1995, Rev B
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 circuitry 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 Ð 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 in-
Elantec, Inc.
1996 Tarob Court
Milpitas, CA 95035
Telephone: (408) 945-1323
(800) 333-6314
Fax: (408) 945-9305
European Office: 44-71-482-4596
tended to support 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 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. Elantec, Inc.’s warranty is limited to replacement of defective components and does not cover injury to persons or property or other consequential damages.
Printed in U.S.A.20
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