Motivation
This module provides high precision CV outputs in fixed 1V (octave) steps and three inverter. The 1V output goes from +1V to +10V. I want those for my test rack to provide fixed outputs in 1V positive steps and precision inverters. This is not a standalone module. It only works with the Scaled Voltage Reference 10V.
Specs and features
- High precision fixed output from +1V to +10V in 1V steps (octaves)
- High precision inverters for negative outputs
- Power consumption below 10mA each rail
Implementation
Schematic
Scaled voltage reference 10V AddOn: Schematic control board
Scaled voltage reference 10V AddOn: Schematic main board
Description:
Just a bunch of buffers and inverters
Calibration
- None
Building hints
- It is crucial to match the resistors in the inverters as good as you can. Better than 0.1% if you can.
Special parts
- Use precision OpAmps.
Download
Scaled voltage reference 10V AddOn control board documentation downloadScaled voltage reference 10V AddOn control board Gerber files download
Scaled voltage reference 10V AddOn main board documentation download
Scaled voltage reference 10V AddOn main board Gerber files download
Scaled voltage reference 10V AddOn *.fpd file
Scaled voltage reference 10V AddOn: Front view
Scaled voltage reference 10V AddOn: Populated control PCB
Scaled voltage reference 10V AddOn: Populated main PCB
Scaled voltage reference 10V AddOn: Halve front view
Scaled voltage reference 10V AddOn: Halve back view
Scaled voltage reference 10V AddOn: Side view
