Datasheet

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STM32F103xF, STM32F103xG Electrical characteristics
132
5.3.20 DAC electrical specifications
Table 66. DAC characteristics
Symbol Parameter Min Typ Max Unit Comments
V
DDA
Analog supply voltage 2.4 - 3.6 V
V
REF+
Reference supply voltage 2.4 - 3.6 V V
REF+
must always be below V
DDA
V
SSA
Ground 0 - 0 V
R
LOAD
(1)
Resistive load vs. V
SSA
with
buffer ON
5- - kΩ
Resistive load vs. V
DDA
with
buffer ON
15 - - kΩ
R
O
(1)
Impedance output with buffer
OFF
-- 15 kΩ
When the buffer is OFF, the Minimum
resistive load between DAC_OUT
and V
SS
to have a 1% accuracy is
1.5 MΩ
C
LOAD
(1)
Capacitive load - - 50 pF
Maximum capacitive load at
DAC_OUT pin (when the buffer is
ON).
DAC_OUT
min
(1)
Lower DAC_OUT voltage
with buffer ON
0.2 - - V
It gives the maximum output
excursion of the DAC.
It corresponds to 12-bit input code
(0x0E0) to (0xF1C) at V
REF+
= 3.6 V
and (0x155) and (0xEAB) at V
REF+
=
2.4 V
DAC_OUT
max
(1)
Higher DAC_OUT voltage
with buffer ON
--V
DDA
– 0.2 V
DAC_OUT
min
(1)
Lower DAC_OUT voltage
with buffer OFF
-0.5 mV
It gives the maximum output
excursion of the DAC.
DAC_
(1)
OU
T max
(1)
Higher DAC_OUT voltage
with buffer OFF
-
V
REF+
–
10 mV
V
I
DDVREF+
DAC DC current
consumption in quiescent
mode (Standby mode)
- 380 µA
With no load, worst code (0x0E4) at
V
REF+
= 3.6 V in terms of DC
consumption on the inputs
I
DDA
DAC DC current
consumption in quiescent
mode
(2)
- 380 µA
With no load, middle code (0x800) on
the inputs
- 480 µA
With no load, worst code (0xF1C) at
V
REF+
= 3.6 V in terms of DC
consumption on the inputs
DNL
(3)
Differential non linearity
Difference between two
consecutive code-1LSB)
- ±0.5 LSB
Given for the DAC in 10-bit
configuration
- ±3 LSB
Given for the DAC in 12-bit
configuration
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