5.35 12-Bit DAC, Reference Input Specifications
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER |
TEST CONDITIONS |
VCC |
MIN |
TYP |
MAX |
UNIT |
VeREF+ |
Reference input voltage range |
DAC12IR = 0(1)(2) |
2.2 V, 3 V |
|
AVCC/3 |
AVCC + 0.2 |
V |
DAC12IR = 1(3)(4) |
|
AVCC |
AVCC + 0.2 |
Ri(VREF+) |
Reference input resistance |
DAC12IR = 0, SD16VMIDON = 1(5) |
2.2 V, 3 V |
20 |
|
|
MΩ |
DAC12IR = 1, SD16VMIDON = 1 |
40 |
48 |
56 |
kΩ |
(1) For a full-scale output, the reference input voltage can be as high as 1/3 of the maximum output voltage swing (AVCC).
(2) The maximum voltage applied at reference input voltage terminal VeREF+ = [AVCC – VE(O)] / [3 × (1 + EG)].
(3) For a full-scale output, the reference input voltage can be as high as the maximum output voltage swing (AVCC).
(4) The maximum voltage applied at reference input voltage terminal VeREF+ = [AVCC – VE(O)] / (1 + EG).
(5) Characterized, not production tested