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STM32H743xI Electrical characteristics
196
6.3.21 DAC electrical characteristics
Table 86. DAC characteristics
Symbol Parameter Conditions Min Typ Max Unit
V
DDA
Analog supply voltage - 1.8 3.3 3.6
V
V
REF+
Positive reference voltage - 1.80 - V
DDA
V
REF-
Negative reference
voltage
--V
SSA
-
R
L
Resistive Load
DAC output
buffer ON
connected to
V
SSA
5--
㏀
connected to
V
DDA
25 - -
R
O
(1)
Output Impedance DAC output buffer OFF 10.3 13 16
R
BON
Output impedance sample
and hold mode, output
buffer ON
DAC output
buffer ON
V
DD
= 2.7 V - - 1.6
㏀
V
DD
= 2.0 V - - 2.6
R
BOFF
Output impedance sample
and hold mode, output
buffer OFF
DAC output
buffer OFF
V
DD
= 2.7 V - - 17.8
㏀
V
DD
= 2.0 V - - 18.7
C
L
(1)
Capacitive Load
DAC output buffer OFF - - 50 pF
C
SH
(1)
Sample and Hold mode - 0.1 1 µF
V
DAC_OUT
Voltage on DAC_OUT
output
DAC output buffer ON 0.2 -
V
REF+
0.2
V
DAC output buffer OFF 0 - V
REF+
t
SETTLING
Settling time (full scale: for
a 12-bit code transition
between the lowest and
the highest input codes
when DAC_OUT reaches
the final value of ±0.5LSB,
±1LSB, ±2LSB, ±4LSB,
±8LSB)
Normal mode, DAC output buffer
OFF, ±1LSB C
L
=10 pF
-1.7
(1)
2
(1)
µs
t
WAKEUP
(2)
Wakeup time from off
state (setting the Enx bit in
the DAC Control register)
until the ±1LSB final value
Normal mode, DAC output buffer
ON, C
L
≤ 50 pF, R
L
= 5 ㏀
-57.5µs
V
offset
(1)
Middle code offset for 1
trim code step
V
REF+
= 3.6 V - 850 -
µV
V
REF+
= 1.8 V - 425 -
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