8 Digital-to-analog converter
The digital-to-analog converter (DAC) can use either an internal or external voltage
reference. When using an internal voltage reference, DACREF can be GPIO
multiplexed to another function or connected to an internal pull-up.
8.1 DAC connection
Figure 8-1. DAC connection considerations.
1.1V to VDDANA-0.3V
DC/DC
Power Source
converter
DACREF
1.1 to VDDANA-0.3 V
1 kꢀ
DAC0A
1 kꢀ
DAC0B
Table 8-1. Digital-to-analog converter checklist.
Signal name Recommended pin connection
Description
Reference voltage range:
DACREF
External voltage reference
1.1V – (VDDANA-0.3V)
Minimum load impedance: 1kꢀ
DAC0A
Channel A analog output
Channel B analog output
Maximum load capacitance: 100pF
Minimum load impedance: 1kꢀ
DAC0B
Maximum load capacitance: 100pF
12
AVR32768
32157A-AVR-12/10
ATMEL [ ATMEL ]
