STM32MP157C datasheet(206/260 Pages) STMICROELECTRONICS

tên linh kiện	STM32MP157C

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Electrical characteristics

STM32MP157C/F

206/260

DS12505 Rev 5

Table 81. DAC accuracy(1)

Symbol

Parameter

Conditions

Min

Typ(2)

Max

Unit

DNL

Differential

non

linearity(3)

±2

LSB

INL

Integral non

linearity(4)

±4

LSB

Offset

Offset error

at code

0x800 (4)

DAC output

buffer ON

VREF+ =

3.6 V

-±5

LSB

VREF+ =

1.8 V

-±7

DAC output buffer OFF

±8

Offset1

Offset error

at code

0x001(5)

DAC output buffer OFF

±5

LSB

Gain

Gain error(6)

±1

TUECal

Total

unadjusted

error

DAC output

buffer ON

VREF+=3.6 V

±10

LSB

VREF+=1.8 V

±8

SNR

Signal-to-

noise ratio(7)

1 kHz, BW = 500 kHz

67.8

THD

Total

harmonic

distorsion(7)

1kHz

-78.6

SINAD

Signal-to-

noise and

distortion

ratio(7)

1 kHz

67.5

ENOB

Effective

number of

bits

1 kHz

10.9

bits

1. Unless otherwise noted, CL ≤ 50 pF with RL ≥ 5 kΩ when DAC output buffer is ON, or CL ≤ 10 pF with no RL when DAC

output buffer is OFF.

2. Guaranteed by characterization.

3. Difference between two consecutive codes minus 1 LSB.

4. Difference between measured the value at Code i and the value measured at Code i on a line drawn between Code 0 and

last Code 4095.

5. Difference between the value measured at Code (0x001) and the ideal value.

6. Difference between the ideal slope of the transfer function and the measured slope computed from code 0x000 and 0xFFF

when the buffer is OFF, and from code giving 0.2 V and (VREF+ - 0.2 V) when the buffer is ON.

7. Signal is -0.5dBFS with Fsampling=1 MHz.

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