The easiest solution is to use a voltage divider:
But using voltage dividers is not temperature coefficient, in page 6 of LM336 datasheet there's a schematic which claims:
If minimum temperature coefficient is desired, four diodes can be added in series with the adjustment potentiometer as shown in Figure 2. When the device is adjusted to 5.00V the temperature coefficient is minimized. Almost any silicon signal diode can be used for this purpose such as a 1N914,1N4148 or a 1N457.
- How diodes makes above circuit temperature coefficient?
- How do I achieve a temperature coefficient 1V voltage reference?