Datasheet

Electrical characteristics STM32F051x
80/105 Doc ID 022265 Rev 3
6.3.16 DAC electrical specifications
Table 57. DAC characteristics
Symbol Parameter Min Typ Max Unit Comments
V
DDA
Analog supply voltage for
DAC ON
2.4 - 3.6 V
R
LOAD
(1)
Resistive load with buffer ON 5 - - kΩ Load is referred to ground
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
DDA
= 3.6 V
and (0x155) and (0xEAB) at V
DDA
=
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_OUT
max
(1)
Higher DAC_OUT voltage
with buffer OFF
--V
DDA
– 1LSB V
I
DDA
DAC DC current
consumption in quiescent
mode (Standby mode)
-- 380µA
With no load, middle code (0x800) on
the input
-- 480µA
With no load, worst code (0xF1C) on
the input
DNL
(2)
Differential non linearity
Difference between two
consecutive code-1LSB)
-- ±0.5 LSB
Given for the DAC in 10-bit
configuration
-- ±2 LSB
Given for the DAC in 12-bit
configuration
INL
(2)
Integral non linearity
(difference between
measured value at Code i
and the value at Code i on a
line drawn between Code 0
and last Code 1023)
-- ±1LSB
Given for the DAC in 10-bit
configuration
-- ±4LSB
Given for the DAC in 12-bit
configuration
Offset
(2)
Offset error
(difference between
measured value at Code
(0x800) and the ideal value =
V
DDA
/2)
-- ±10mV
Given for the DAC in 12-bit
configuration
-- ±3LSB
Given for the DAC in 10-bit at V
DDA
=
3.6 V
-- ±12LSB
Given for the DAC in 12-bit at V
DDA
=
3.6 V
Gain
error
(2)
Gain error - - ±0.5 %
Given for the DAC in 12bit
configuration