- The motivation is to build a hybrid analog/digital computer this is reconfigurable (the topology of the opapms, resistors, capacitors, adders are all wired automatically -- without human hand)
- For that I need to be able to route/connect analog signals (and loads)
- There is no need for high speed switching
- Though there is a need for low noise, low cross-talk and low resistance, impedance, capacitance across the connections.
- Although I do not know too much about them -- I reckon I could extend how cross-bar switches in the old telephone exchanges worked
- Cost is an important factor
- Solid state would be preferred over mechanical
- Digital FPGAs are not candidates for this soliton as they only deal with digital signal
- FPGAs have digital cousins (see this question) -- but they seem to have a very low analog component count -- 2 OpAms, 2 comparators, and seem to suffer from noise and some of the challenges I cited above.
I want to build a configurable circuit topology mesh using mechanical or solid state relays (or/and other components).
- What I envision is that I have a set of electrical pins: 1 through N; The pins could be left open; connected to a pin of a component like a capacitor, inductor, OpAmp, Adder, Multiplier, etc.
- I have a digital (bus?) that specifies the topology of the circuit by a set of pin short circuit specifications:
A set of pin short circute specifications looks like:
- Short pins: 1, 11, 13
- Short pins: 22, 12, 43
- Short pins: 44, 66, 89
Note the short circuits are intended to create circuit nodes (as in Kirchoff's laws nodes)
I've tried to illustrate this using the diagram below.
Is there a standard way of constructing such a routing mesh?