This circuit was found in a National Semiconductor manual from the 1980s. The integrated circuits used are equivalent. Note the need for a symmetrical power supply.
Using the LT128 and LT1037 from Linear Technology this circuit has a 400 MHz gain x bandwidth...
This circuit can be used for several purposes such as pulse counter, pass counter, roulette, etc....
The circuit shown is suggested by National Semiconductor's Linear Applications Handbook. The base...