Since some years I’m planning and sometimes working on a project to create my own LTZ1000A programmable precision voltage reference. Up to now I developed most of the circuit and collected the special components like resistors with 0.1 ppm drift per degree temperature change produced exclusively for me. I want to show that it’s possible to create it as a home brew version.
The preliminary schematics is available for download here.
LTZ1000-precision-reference_schematics.pdfproject goals
- LTZ1000A based
- state of the art 32Bit A/D converter for correction
- <1ppm long and short term stability
- ~2μVpp noise
- programmable 0V .. 5.05V in 37nV steps
- thermostat stabilized