Related Resources: Electrical Electronics Excel Calculators
NE570 VCA Output Biasing Calculator Excel Spreadsheet
NOTE: Refunds are not awarded after excel files have been downloaded - review your membership agreement for details.
Electrical and Electronics Design, Engineering Resources
Engineering Excel Spreadsheet Downloads
NE570 VCA Output Biasing Calculator Excel Spreadsheet
Note: Accessing this resource requires an active Premium Membership with Engineers Edge
Download: NE570 VCA Output Biasing Calculator Excel Spreadsheet
Description:
For best headroom in a VCA circuit, the output of the NE570 should be biased up to 1/2 the supply voltage. This is accomplished by selecting external resistor R (which parallels internal resistor R4). The table below show the resultant bias for various choices of R; note that the supply voltage does not enter into the calculations.