MAP sensors again...

[Gerard]

Hi!

I asked last week about boost sensors up to 3 bar or 30PSIA for less
than $50. Well, before I go any further, I'd like to know who has
electronics savvy on the list?

Reason I ask is that I want to know how difficult it'd be to make
a voltage amplifier for an output signal from a MAP sensor. The sensor
I am interested in does 0.5mV to 4.5mV and ofcourse most aftermarket
ECUs require something like a 4.5V or 5V input signal proportional
to boost levels.

Question is how much would stuff like this cost to build? Say it
takes a 12V input, regulates to 5V for the transducer, which outputs
to 0.5mV-4.5mV and then this gets amplified to a 4.5V-5V max output.
Any ideas what sort of components would be needed?

By the way, I have found a 0-30PSIA (absolute pressure) transducer
for $28 in a 8-pin package (3 used, 5 for mounting), but it needs
a voltage input regulator (4.75V-5.25V) and output amplifier (single
packages would be nice). They have a signal conditioned unit with
outputs 0.25V-4.5V and it costs $47.70, but I don't think it is temperature
compensated, whereas the $28 unit is.

Any ideas welcomed. Thanks. :)