PKD-01

The PKD-01 tracks an analog input signal until a maximum amplitude us reached. The maximum value is then retained as a peak voltage on a hold capacitor. Being a monolithic circuit, the PKD-01 offerssingnificant performance and package density advantages over hybrid modules and discrete designs without sacrificing system versatility. The matching characteristics attained in a monolithic circuit provide inherent advantages when charge injection and droop rate error reduction are primary goats. Innovative design techniques maximize the advantages of monolithic technology. Transconductance(gm) amplifiers were chosen over converntional voltage amplifier circuit building blocks.The "gm" amplifiers simplify internal frequency compensation, minimize acquisition time and maximize circuit accuracy. Their outputs are easily switched by low glitch current steering circuits. The steered outputs are clamped to reduce charge injection errors upon entering the hold mode or exiting the reset mode.The inherently low zero-scale error is reduced further by active"Zener-Zap" trimming to optimize overall accuracy. The output buffer amplifier features an FET input stage to reduce droop rate error during lengthy peak hold periods.A bias current cancellation circuit minimizes droop error at high ambient temperature.

PKD-01 has many unique features: The first one is monolithic design for rellability and low cost. The second one is high siew rate. The third one is low droop rate. The forth one is low zero-scale error. The fifth one is digitally selected hold and reset modes. The sixth one is reset to positive or negative voltage levels. The seventh one is logic signals TTL and CMOS compatible. The eighth one is uncommitted comparator on chip. The ninth one is it is available in ide form.

There are some absolute maixmum ratings about PKD-01. Supply voltage is ±18 V. Input voltage is ±18 V.Logic and logic ground voltage are±18 V.Output short-circuit duration is indefinite.Amplifier A or B differential input voltage is ±24V. Comparator differential input voltage is ±24V. Hold capacitor short-circuit duration is indefine.Lead temperature(soldering,60 sec) is 300.

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