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KE Series
Encased Amplifiers
Features
I I I I I
General Description
The KE Series amplifiers are designed to take full advantage of Fairchild's high-performance DCcoupled 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 output impedance to the application. KE231 .... designed for low-gain applications (Av = 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.
Wide bandwidth, fast settling, high slew rate Low distortion and overshoot Linear phase Easy to use encased form Direct replacement for E103, E104, E200, E220, and E231
Applications
I I
For use on the bench or in a test station as a video amp, pulse amp, line driver, etc. "drop in" units for radar and communication systems
0.688 (17.5) 1.625 (41.3) Feedthru
Bottom 2.000 (50.8) 1.500 (38.1)
0.250 (6.4)
1.500 (38.1) 3.000 (76.2)
2.500 (63.5)
0.250 (6.4)
0.625 (15.9) 1.000 (25.4)
0.062 (1.6) TYP
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-Zi-Zo-Av, 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 specify input impedance in ohms Zi: Zo: specify output impedance in ohms Av: specify voltage gain with output unterminated (ie: Zload = ) (see example) Select Zi, Zo, and Av within the following constraints:
Parameter
Av max Zin inverting
KE103
1/40 1500 Av
KE200
1/50 2000 Av 10k 0
KE220
1/50 1500 Av 10k 0
KE231
1/5 250 Av 10k 0
non-inverting 10k min Zout 0
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.)
REV. 1A February 2001
DATA SHEET
KE Series (Note1)
Slew Rate (V/s) Vout, Iout (V, mA) (Note 2)
Typical Specifications
Model -3dB BW (MHz)
Absolute Maximum Ratings
VCC (V) Power Dissipation (W @ 25C) Derate Above 25C mW/C Output Current (mA) Input Voltage (V) To (C) TS (C)
Settling Time (ns, %)
General Purpose KE200 95 Wide bandwidth KE220 190 High Output Current KE103 150 Low Gain KE231 165
18, 0.1 8, 0.1 10, 0.4 12, 0.1 1.2, 0.8
4000 7000 6000 3000 4500
12, 100 12, 50 11, 200 11, 100 1.6, 40
5-17 5-17 9-17 5-17 9-17
1.8 1.5 2.0 1.8 1.8
10 5 10 10 N/A
100 50 200 100 40
Note 3 Note 3 Note 3/4 Note 3 0.5
-25 to +85 -25 to +85 -25 to +85 -25 to +85 -25 to +85
-65 to +150 -65 to +150 -65 to +150 -65 to +150 -65 to +150
Ultra-wide Bandwidth KE104 1100
Notes
1. Nominal configuration Vcc: 15V KE103, KE104, KE200, KE220, KE231 Load: 100 200 50 KE103, KE231 KE200, KE220 KE104 Av: +20 KE103, KE200, KE220 +2 KE231
2. 3. 4.
When the amplifier is configured with an output impedance (Zout > 0, the maximum output voltage swing (at the load) is reduced by the factor Zload/(Zload + Zout). See the example on page 1. These amplifiers must be kept out of saturation; in other words, the output voltage (determined by Vin and Av.) must be kept away from the supply voltage.
V CC - 2.5 V in < Av
In the non-inverting configuration, the input voltage to the KE103 must not exceed 5V.
Relative Bandwidth vs. Gain
1.1
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 bandwidth. Heavier loads decrease the bandwidth as the plot indicates. (The total load on the amplifier is the sum of the output impedance, Zo, and the load connected external to the amplifier, Zload). Relative Bandwidth vs. VCC 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.
Relative Bandwidth
1.0
KE200
0.9
KE231 KE103
0.8 0.7
KE220
0.6 1 2 5 10 20 50
|Gain| Relative Bandwidth vs. Load
1.1 1.0 0.9 0.8
KE231 KE103 KE200 KE220
Relative Bandwidth
0.7 0.6 50 100 200 500 1000
Load Resistance () Relative Bandwidth vs. VCC
1.2 1.0
KE200 KE220
Relative Bandwidth
0.8
KE103
0.6
KE231
0.4 0.2 5 7 9 11 13 15
VCC (V)
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.
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(c) 2001 Fairchild Semiconductor Corporation

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