[sdiy] CA3094 replacements for EH guitar synth??

[Paul Perry]

Well from the CA3094 data sheet:
"The CA3094 has the generic characteristics of the CA3080 operational amplifier directly coupled to an integral Darlington power transistor capable of sinking or driving currents up to 100mA. The gain of the differential input stage is proportional to the amplifier bias current (IABC), permitting programmable variation of the integrated circuit sensitivity with either digital and/or analog programming signals. For example, at an IABC of 100µA, a 1mV change at the input will change the output from 0 to 100µA (typical). The CA3094 is intended for operation up to 24V and is especially useful for timing circuits, in automotive equipment, and in other applications where operation up to 24V is a primary design requirement"

So maybe a LM13700 would be OK.

Paul perry Melbourne Australia

-----Original Message-----

i was wondering if I could use any other OTA in the EH micro synth pedal. 
it looks like a great schematic and would allow me to get a square wave.
 
or should i just buy some of them from ALL PARTS PIPE on ebay? (can anyone vouch for these?)