Features
I
Wide bandwidth, fast settling, high slew rate
I
Low distortion and overshoot
I
Linear phase
I
Easy to use encased form
I
Direct replacement for E103, E104, E200,
E220, and E231
Applications
I
For use on the bench or in a test station as a video
amp, pulse amp, line driver, etc.
I
"drop in" units for radar and
communication systems
General Description
The KE Series amplifiers are designed to take full
advantage of Fairchild's high-performance DC-
coupled operational amplifiers in an easy-to-use,
encased form. This format makes the KE Series
amplifiers an excellent choice for use on the bench,
in a test station, or in other environments needing
both high performance and ease of use.
The op amp-based KE Series amplifiers provide a
wide selection of features as well as the ability to
customize parameters such as voltage gain and out-
put impedance to the application.
KE231 .... designed for low-gain applications
(A
v
= 1 to 5)
KE220 .... high bandwidth (-3dB BW of 190MHz),
lower output current (50mA)
KE200 .... general purpose (-3dB BW of 95MHz)
KE103 .... high output current (200mA)
The KE104 is an encased version of the KH104AI, a DC
to 1.1GHz linear amplifier with a fixed gain of 14dB and
50
input and output impedances. These features, coupled
with excellent distortion and VSWR characteristics,
make the KE104 ideal for applications in wideband
analog and high-speed digital communications,
radar, and fiber optics transmitters and receivers.
KE104 .... DC to 1.1GHz, fixed 14dB gain, low distortion.
KE Series
Encased Amplifiers
www.fairchildsemi.com
REV. 1A February 2001
Parameter
KE103
KE200
KE220
KE231
A
v
1/40
1/50
1/50
1/5
max Z
in
1500
2000
1500
250
inverting
A
v
A
v
A
v
A
v
non-inverting 10k
10k
10k
10k
min Z
out
0
0
0
0
1.625
(41.3)
0.688
(17.5)
2.500
(63.5)
0.250
(6.4)
2.000
(50.8)
1.500
(38.1)
0.250
(6.4)
1.500
(38.1)
3.000
(76.2)
Feedthru
Example:
KE200-N-BNC-75-50-20 means a KE200 with a non-inverting
gain, BNC connectors, 75W input impedance, 50W output
impedance, and a voltage gain of 20V/V (unterminated
output). (When driving a realistic load, the actual gain is
reduced by the factor Zload/(Zload + Zo) due to the resistive
divider action of the output impedance, Zo, and the load
connected to the amplifier, Zload. The unterminated voltage
gain, Av, should be selected with this in mind.
)
Select Z
i
, Z
o
, and A
v
within the following constraints:
0.062
(1.6)
TYP
0.625
(15.9)
Bottom
1.000
(25.4)
Ordering Information
KE104
Since gain and input and output impedances are fixed
on the KE104, simply designate the connector type
required by: KE104-BNC or KE104-SMA.
KE103, KE200, KE220, and KE231
Due to the flexibility possible with these amplifiers,
the user must specify several parameters when ordering:
The full part number is KEnnn-p-con-Z
i
-Z
o
-A
v
,
nnn: specify 103, 200, 220, or 231
p:
specify N (non-inverting) or I (inverting)
con: specify BNC or SMA connectors or NDC for no case
Z
i
:
specify input impedance in ohms
Z
o
:
specify output impedance in ohms
A
v
: specify voltage gain with output unterminated
(ie: Z
load
=
) (see example)
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICES TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD
DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT
RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT
OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein:
1.
Life support devices or systems are devices or systems which, (a) are intended for
surgical implant into the body, or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a significant injury of the user.
2.
A critical component in any component of a life support device or system whose
failure to perform can be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or effectiveness.
DATA SHEET
KE Series
www.fairchildsemi.com
2001 Fairchild Semiconductor Corporation
Discussion
The performance specified above is that typically seen for a
nominally-configured KE Series amplifier; performance for different
configurations can be determined using the graphs. Other parameters
not shown can be approximated by referring to the individual hybrid
data sheets.
Relative Bandwidth vs. Gain
At the nominal gain setting of +20 (+2 for the KE231),the amplifiers will
typically provide 100% of the specified bandwidth; higher gains will
reduce the bandwidth somewhat as shown in the graph.
Relative Bandwidth vs. Load
Listed under the typical specifications table are the nominal loads at
which the amplifiers will typically provide 100% of the specified band-
width. Heavier loads decrease the bandwidth as the plot indicates. (The
total load on the amplifier is the sum of the output impedance, Z
o
, and
the load connected external to the amplifier, Z
load
).
Relative Bandwidth vs. V
CC
All of the KE Series amplifiers are designed to operate on 15V
supplies. The user may elect, however, to use lower supplies but at
some sacrifice in performance as shown in the plot.
Model
-3dB Settling
Slew
V
out
, I
out
V
CC
Power
Derate
Output
Input T
o
T
S
BW
Time
Rate
(V, mA)
(V)
Dissipation
Above 25C
Current
Voltage
(C)
(C)
(MHz)
(ns, %)
(V/
s)
(Note 2)
(W @ 25C)
mW/C
(mA)
(V)
General Purpose
KE200
95
18, 0.1
4000
12, 100
5-17
1.8
10
100
Note 3
-25 to +85
-65 to +150
Wide bandwidth
KE220
190
8, 0.1
7000
12, 50
5-17
1.5
5
50
Note 3
-25 to +85
-65 to +150
High Output Current
KE103
150
10, 0.4
6000
11, 200
9-17
2.0
10
200
Note 3/4
-25 to +85
-65 to +150
Low Gain
KE231
165
12, 0.1
3000
11, 100
5-17
1.8
10
100
Note 3
-25 to +85
-65 to +150
Ultra-wide Bandwidth
KE104
1100
1.2, 0.8
4500
1.6, 40
9-17
1.8
N/A
40
0.5
-25 to +85
-65 to +150
Notes
1.
Nominal configuration
V
cc
:
15V KE103, KE104, KE200, KE220, KE231
Load: 100
KE103, KE231
A
v
: +20 KE103, KE200, KE220
200
KE200, KE220
+2 KE231
50
KE104
2.
When the amplifier is configured with an output impedance (Z
out
> 0, the maximum output
voltage swing (at the load) is reduced by the factor Z
load
/(Z
load
+ Z
out
). See the example on page 1.
3.
These amplifiers must be kept out of saturation; in other words, the output voltage
(determined by V
in
and A
v
.) must be kept away from the supply voltage.
4.
In the non-inverting configuration, the input voltage to the KE103 must not exceed 5V.
KE200
Relative Bandwidth vs. Gain
Relative Bandwidth
|Gain|
1.1
1.0
0.6
1
2
50
0.9
0.8
5
10
20
KE103
KE220
KE231
0.7
KE231
KE200
KE220
Relative Bandwidth vs. Load
Relative Bandwidth
Load Resistance (
)
1.1
1.0
0.6
50
100
1000
0.9
0.8
200
500
KE103
0.7
Typical Specifications
(Note1)
Absolute Maximum Ratings
KE231
KE200
KE220
Relative Bandwidth vs. V
CC
Relative Bandwidth
V
CC
(V)
1.2
1.0
0.2
5
7
15
0.8
0.6
9
11
KE103
0.4
13
V
V
2.5
A
in
CC
v
<
-
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