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KH103 Dataheets PDF



Part Number KH103
Manufacturers Cadeka
Logo Cadeka
Description High Current Wideband Op Amp
Datasheet KH103 DatasheetKH103 Datasheet (PDF)

www.cadeka.com KH103 www.datasheet4u.com Fast Settling, High Current Wideband Op Amp Features s s s s s s 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 f.

  KH103   KH103


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www.cadeka.com KH103 www.datasheet4u.com Fast Settling, High Current Wideband Op Amp Features s s s s s s 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 highspeed 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 -25°C to +85°C 24-pin Ceramic DIP -55°C to +125°C 24-pin Ceramic DIP, features burn-in and hermetic testing -55°C to +125°C 24-pin Ceramic DIP, environmentally screened and electronically tested to MIL-STD-883 80MHz full-power bandwidth (20Vpp, 100Ω) 200mA output current 0.4% settling in 10ns 6000V/µs slew rate 4ns rise and fall times (20V) Direct replacement for CLC103 Applications s s s s s Coaxial line driving DAC current to voltage amplifier Flash A to D driving Baseband and video communications Radar and IF processors Small Signal Pulse Response Typical Performance KH103AM REV. 1A January 2004 DATA SHEET KH103 KH103 Electrical Characteristics (Av = +20V, VCC = ±15V, RL = 100Ω; unless noted) www.datasheet4u.com Absolute Maximum Ratings VCC (reversed supplies will destroy part) junction temperature (see thermal model) thermal resistance storage temperature lead temperature (soldering 10s) output current operating temperature: AI AK, AM ±20V +175°C see thermal model -65°C to +150°C +300°C ±200mA -25°C to +85°C -55C to +125°C 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 ¦ AI sample tested at +25°C 2) This rating protects against damage to the input stage caused by saturation of either the input or output stages. Under transient conditions not exceeding 1µs (duty cycle not exceeding 10% maximum input voltage may be as large as twice the maximum Vcm should never exceed ±5V. (Vcm is the voltage at the non-inverting input, pin 7). 3) This rating protects against exceeding transistor collector-emitter breakdown ratings. Recommended VCC is ±15V. 2 REV. 1A January 2004 KH103 DATA SHEET KH103 Performance Characteristics (Av = +20°C, VCC = ±15V, RL = 100Ω; unless noted) www.datasheet4u.com REV. 1A January 2004 3 DATA SHEET KH103 KH103 Operation The KH103 is based on a unique design which uses current feedback instead of the usual voltage feedback. This design provides dynamic performance far beyond that previously available, yet it is used basically the same as the familiar voltage-feedback op amp (see the gain equations above). www.datasheet4u.com Layout Considerations To obtain optimum performance from any circuit operating at high frequencies, good PC layout is essential. Fortunately, the stable, well-behaved response of the KH103 makes operation at high frequencies less sensitive to layout than is the case with other wideband op amps, even though the KH103 has a much wider bandwidth. In general, a good layout is one which minimizes the unwanted coupling of a signal between nodes in a circuit. A continuous ground plane from the signal input to output on the circuit side of the board is helpful. Traces should be kept short to minimize inductance. If long traces are needed, use microstrip transmission lines which are terminated in their characteristic impedance. At some high-impedance nodes, or in sensitive areas such as near pin 5 of the KH103, stray ca.


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