kh103 Fairchild Semiconductor, kh103 Datasheet

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kh103

Manufacturer Part Number
kh103
Description
Fast Settling, High Current Wideband Op Amp
Manufacturer
Fairchild Semiconductor
Datasheet
KH103
Fast Settling, High Current Wideband Op Amp
Features
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Applications
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80MHz full-power bandwidth (20V
200mA output current
0.4% settling in 10ns
6000V/µs slew rate
4ns rise and fall times (20V)
Direct replacement for CLC103
Coaxial line driving
DAC current to voltage amplifier
Flash A to D driving
Baseband and video communications
Radar and IF processors
Typical Performance
Small Signal Pulse Response
pp
, 100Ω)
General Description
The KH103 is a high-power, wideband op amp designed
for the most demanding high-speed applications. The
wide bandwidth, fast settling, linear phase, and very
low harmonic distortion provide the designer with
the signal fidelity needed in applications such as driving
flash A to Ds. The 80MHz full-power bandwidth and
200mA output current of the KH103 eliminate the
need for power buffers in most applications; the
KH103 is an excellent choice for driving large high-
speed signals into coaxial lines.
In the design of the KH103 special care was taken in
order to guarantee that the output settle quickly to
within 0.4% of the final value for use with ultra fast
flash A to D converters. This is one of the most
demanding of all op amp requirements since settling
time is affected by the op amps bandwidth, passband
gain flatness, and harmonic distortion. This high
degree of performance ensures excellent performance
in many other demanding applications as well.
The dynamic performance of the KH103 is based on a
current feedback topology that provides performance
far beyond that available from conventional op amp
designs. Unlike conventional op amps where optimum
gain-bandwidth product occurs at a high gain, minimum
settling time at a gain of -1, and maximum slew rate
at a gain of +1, the KH103 provides consistent
predictable performance across its entire gain range.
For example, the table below shows how the -3dB
bandwidth remain nearly constant over a wide range
of gains. And since the amplifier is inherently stable,
no external compensation is required. The result is
shorter design time and the ability to accommodate
design changes (in gain, for example) without loss of
performance or redesign of compensation circuits.
The KH103 is constructed using thin film resistor/
bipolar transistor technology, and is available in the
following versions:
KH103AI
KH103AK
KH103AM
-25°C to +85°C
-55°C to +125°C 24-pin Ceramic DIP,
-55°C to +125°C 24-pin Ceramic DIP,
24-pin Ceramic DIP
features burn-in and
hermetic testing
environmentally screened
and electronically tested
to MIL-STD-883
www.fairchildsemi.com
REV. 1A February 2001

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kh103 Summary of contents

Page 1

... KH103 is an excellent choice for driving large high- speed signals into coaxial lines. In the design of the KH103 special care was taken in order to guarantee that the output settle quickly to within 0.4% of the final value for use with ultra fast flash converters ...

Page 2

... DATA SHEET KH103 Electrical Characteristics Absolute Maximum Ratings V (reversed supplies will destroy part) CC junction temperature (see thermal model) thermal resistance storage temperature lead temperature (soldering 10s) output current operating temperature: AI AK, AM Notes 1) * AI, AK, AM 100% tested at +25°C ¦ AK, AM 100% tested at at +25°C and sample tested at -55°C and +125°C ¦ ...

Page 3

... KH103 KH103 Performance Characteristics REV. 1A February 2001 (A = +20° ±15V 100Ω; unless noted DATA SHEET 3 ...

Page 4

... Figure 3. For Inverting operation, modify the circuit in Figure 2 by the addition of the circuit in Figure 4. Keep all resistors which connect to the KH103 within 0.2” of the KH103 pins. The other side of these resistors should likewise be as close possible. For good overall results, U1 should be similar to the LF356 ...

Page 5

... Distortion and Noise The graphs of intercept point versus frequency on the page 3 make it easy to predict the distortion at any fre- a should be quency, given the output voltage of the KH103. First con vert the output voltage (10log At the frequency of interest, its 2nd harmonic will below the level of P ...

Page 6

... DATA SHEET KH103 Package Dimensions Pin #1 Index Symbol Minimun A-Metal Lid A-Ceramic Lid A1-Metal Lid A1-Ceramic Lid 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 ...

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