i



CCWN77:101



NOTES:-The power -supply must a dual-polarity supply., plus and minus 6 volts,

above and below ground.. Power supply connections on the operational
amplifiers and 4066 analog switches are omitted in the diagram for clarity.
The same applies to the quad nand gate in the center of the diagram.
Specify your desired type-- 7hc00 or GD4011.



On tbAs CD4066 switches,,, the wire, drawn with an arrow pointing to the
box is the CONTROL INPUT to the particular switch; the other two

lines are the interchangeable inputs and outputs.



The 33 p.F capacitors connected to the CA3130B OP appe are qomipensation



capacitors.



I have left, pin numbers unspecified in all places where circuit ,
board layout will be simplified by having wiring optionslavaikable,,
such as in IC's where 2 or 4 identical functions exist in the same
package.


L1%358W  Dual low-power operational amplifier: National Semi and others
CD4066AE Quad analog swithhs RCA and numerous others ,

CA3130S   FIT input op ampt RGA    Identical type CA3160 internally



compensated; also versions avail in mini-dip instead of
I'dil-can" (The IS" version I presently use.)


MM74C74Dual CMDS type D flip flop; National Semi

CD4017ABDecade counter with.decoded Outputs: RCAp National,, others

MM74c9ODecade counter- National Simi

                    J

Diodes:1N914 or similar



.Output is kigh-impedances requires external audio amplifier

AGC output generates forward AGCj, compatible with 1590-type i.f.

     amplif iers
The 1 uF.and .01 uF capacitors used in the integrators and aample-
hold circuits should be very low leakage typesp and PCB layout
should be arranged to provide minim= leakages around theee@,.circuits.