STM32F051X4 Datasheet, PDF (80/104 Pages) STMicroelectronics – Low- and medium-density advanced ARM™-based 32-bit MCU

STM32F051x
Electrical characteristics
Table 57. DAC characteristics (continued)
Symbol
Parameter
Min Typ
Max
Settling time (full scale: for a
10-bit input code transition
t_SETTLING(2)
between the lowest and the
highest input codes when
-
3
4
DAC_OUT reaches final
value ±1LSB
Max frequency for a correct
Update
rate⁽²⁾
DAC_OUT change when
small variation in the input
-
-
1
code (from code i to i+1LSB)
Wakeup time from off state
t_WAKEUP(2) (Setting the ENx bit in the
- 6.5
10
DAC Control register)
Power supply rejection ratio
PSRR+ ⁽¹⁾ (to V_DDA) (static DC
- –67
–40
measurement
1. Guaranteed by design, not tested in production.
2. Data based on characterization results, not tested in production.
Unit
Comments
µs C_LOAD ≤ 50 pF, R_LOAD ≥ 5 kΩ
MS/s C_LOAD ≤ 50 pF, R_LOAD ≥ 5 kΩ
C_LOAD ≤ 50 pF, R_LOAD ≥ 5 kΩ
µs input code between lowest and
highest possible ones.
dB No R_LOAD, C_LOAD = 50 pF
Figure 24. 12-bit buffered /non-buffered DAC
Buffered/Non-buffered DAC
Buffer(1)
12-bit
digital to
analog
converter
DACx_OUT
R _LOAD
C _LOAD
ai17157
1. The DAC integrates an output buffer that can be used to reduce the output impedance and to drive external loads directly
without the use of an external operational amplifier. The buffer can be bypassed by configuring the BOFFx bit in the
DAC_CR register.
Doc ID 022265 Rev 3
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