Datasheet
Electrical characteristics STM32L431xx
148/200 DocID028800 Rev 1
Gain Gain error
(5)
DAC output buffer ON
CL 50 pF, RL 5 k
--±0.5
%
DAC output buffer OFF
CL 50 pF, no RL
--±0.5
TUE
Total
unadjusted
error
DAC output buffer ON
CL 50 pF, RL 5 k
--±30
LSB
DAC output buffer OFF
CL 50 pF, no RL
--±12
TUECal
Total
unadjusted
error after
calibration
DAC output buffer ON
CL 50 pF, RL 5 k
--±23LSB
SNR
Signal-to-noise
ratio
DAC output buffer ON
CL 50 pF, RL 5 k
1 kHz, BW 500 kHz
-71.2-
dB
DAC output buffer OFF
CL 50 pF, no RL, 1 kHz
BW 500 kHz
-71.6-
THD
Total harmonic
distortion
DAC output buffer ON
CL 50 pF, RL 5 k, 1 kHz
--78-
dB
DAC output buffer OFF
CL 50 pF, no RL, 1 kHz
--79-
SINAD
Signal-to-noise
and distortion
ratio
DAC output buffer ON
CL 50 pF, RL
5 k, 1 kHz
-70.4-
dB
DAC output buffer OFF
CL 50 pF, no RL, 1 kHz
-71-
ENOB
Effective
number of bits
DAC output buffer ON
CL 50 pF, RL 5 k, 1 kHz
-11.4-
bits
DAC output buffer OFF
CL 50 pF, no RL, 1 kHz
-11.5-
1. Guaranteed by design.
2. Difference between two consecutive codes - 1 LSB.
3. Difference between measured value at Code i and the value at Code i on a line drawn between Code 0 and last Code 4095.
4. Difference between the value measured at Code (0x001) and the ideal value.
5. Difference between ideal slope of the transfer function and measured slope computed from code 0x000 and 0xFFF when
buffer is OFF, and from code giving 0.2 V and (V
REF+
– 0.2) V when buffer is ON.
Table 71. DAC accuracy
(1)
(continued)
Symbol Parameter Conditions Min Typ Max Unit
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