SLASEL0B October 2019 – June 2020 DAC11001A , DAC81001 , DAC91001
PRODUCTION DATA.
Generating a negative reference is a challenge because of the fact that the circuit needs an inverting amplifier involving resistors. The resistor mismatch and temperature drift can lead to inaccuracy. The embedded, matched resistors in DACx1001 can be used as shown in Figure 71, the inverting amplifier configuration, to generate an accurate negative reference voltage.