Variable Inverter: Can Output Depend on Digital Resistor?

[ThatNinthGuy]

Hi

Would it be possible to make an inverter, with the output dependent on a digital resistor?

Simon

 

[skeptic2]

Define output.

 

[Bobbywhy]

ThatNinthGuy, Welcome to Physics Forums!

Here is one manufacturer of Integrated Circuits that makes inverting amplifiers with digital gain control:

Programmable Gain Amplifiers

Set your gain with a simple serial or parallel interface from 1 to over 4000V/V. Linear Technology's PGAs (programmable gain amplifiers) provide excellent gain accuracy, channel-to-channel matching specs, and low 1ppm/°C drift.

For circuit ideas drawn from our vast library of datasheets, design notes and application notes, visit our new op amp circuit collection

http://www.linear.com/products/programmable_gain_amplifiers

Cheers,
Bobbywhy