STM32W108HB datasheet(162/179 Pages) STMICROELECTRONICS

162 / 179 page

Electrical characteristics

STM32W108CB, STM32W108HB

162/179

Doc ID 16252 Rev 2

12.4.3

Low frequency internal clock characteristics

12.4.4

Low frequency external clock characteristics

12.4.5

ADC characteristics

Table 37 describes the key ADC parameters measured at 25°C and VDD_PADS at 3.0 V, for

a sampling clock of 1 MHz. ADC_HVSELP and ADC_HVSELN are programmed to 0 to

disable the input buffer. The single-ended measurements were done at finput = 7.7% fNyquist;

0 dBFS level (where full-scale is a 1.2 V p-p swing). The differential measurements were

done at finput = 7.7% fNyquist; -6 dBFS level (where full-scale is a 2.4 V p-p swing).

Table 35.

Low-frequency RC oscillator specification

Parameter

Test conditions

Min

Typ

Max

Unit

Nominal Frequency

After trimming

kHz

Analog trim step size

kHz

Supply dependence

For a voltage drop from 3.6 V

to 3.1 V or 2.6 V to 2.1 V

(without re-calibration)

Frequency dependence

Frequency variation with

temperature for a change

from -40 oC to +85oC

(without re-calibration)

Table 36.

Low-frequency crystal oscillator specification

Parameter

Test conditions

Min

Typ

Max

Unit

Frequency

32.768

kHz

Accuracy

Initial, temperature, and

ageing

-100

+100

ppm

Load cap xin

Load cap xout

Crystal ESR

100

Start-up time

Current consumption

At 25°C, VDD_PADS=3.0 V

0.5

µA

Table 37.

ADC module key parameters for 1 MHz sampling

Parameter

Performance

ADC_PERIOD

Conversion Time (µs)

128

256

512

1024

2048

4096

Nyquist Freq (kHz)

15.6

7.81

3.91

1.95

0.977

0.488

0.244

0.122

3 dB Cut-off (kHz)

9.42

4.71

2.36

1.18

0.589

0.294

0.147

0.0736

INL (codes peak)

0.04

0.05

0.09

0.2

0.3

0.6

1.2

INL (codes RMS)

0.02

0.03

0.05

0.1

0.2

0.4

STM32W108HB bảng dữ liệu(PDF) 162 Page - STMicroelectronics

STM32W108HB bảng dữ liệu(HTML) 162 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

bảng dữ liệu tải về

Link URL