Posted on Mar 23, 2013

Circuit has a 1 Hz-to-30 MHz output, 150-dB dynamic range, for a 0 to 5 V input. It maintains 0.08% linearity over its entire 71/3 decade range with a full-scale drift of about 20 ppm/°C. To get the additional bandwidth, the fast )FET buffer drives the Schottky TTL Schmitt trigger. The Schottky diode prevents the Schmitt trigger from ever seeing negative voltage at its input. The Schmitt`s input voltage hysteresis provides the limits which the oscillator runs between.

Click here to download the full size of the above Circuit.

The 30-MHz, full-scale output is much faster than the LTC1043 can accept, so the digital divider stages are used to reduce the feedback frequency signal by a factor of 20. The remaining Schmitt sections furnish complementary outputs.

Leave Comment

characters left:

New Circuits



Popular Circuits

RF power and VSWR meter
Travellers shaver adapter
the design of the gas detector of LPC221
lm723 variable power supply circuit design
doubler voltage with ne555 schematic
Integrated Circuit Voltage-to-Frequency Converter
VLF Whistler Reception
Adjustable dual voltage power supply circuit
Bandwidth broadband linear detector circuit schematic of 10MHz
Basic circuit diagram connection of signal and power ISO103