STM32F373VC datasheet(114/131 Pages) STMICROELECTRONICS

114 / 131 page

Electrical characteristics

STM32F37xxx

114/131

DocID022691 Rev 4

1. Data based on characterization results, not tested in production.

2. For fADC lower than 5 MHz, there will be a performance degradation of around 2 dB due to flicker noise increase.

3. If the reference value is lower than 2.4 V, there will be a performance degradation proportional to the reference supply drop,

according to this formula: 20*log10(VREF/2.4) dB

4. SNR, THD, SINAD parameters are valid for frequency bandwidth 20Hz - 1kHz. Input signal frequency is 300Hz (for

fADC=6MHz) and 100Hz (for fADC=1.5MHz).

Table 75. VREFSD+ pin characteristics(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Note

VREFINT

Internal reference

voltage

Buffered embedded

reference voltage (1.2 V)

-1.2

See Section 6.3.4:

Embedded

reference voltage on

page 60

Embedded reference

voltage amplified by

factor 1.5

-1.8

CVREFSD+(2)

Reference voltage

filtering capacitor

VREFSD+ = VREFINT

1000

10000

RVREFSD+

Reference voltage

input impedance

Fast mode

(fADC = 6 MHz)

-238

See RM0313

reference manual for

detailed description

Slow mode

(fADC = 1.5 MHz)

-952

1. Data based on characterization results, not tested in production.

If internal reference voltage is selected then this capacitor is charged through internal resistance - typ. 300 ohm. If internal

reference source is selected through the reference voltage selection bits (REFV<>”00” in SDADC_CR1 register), the

application must first configure REFV bits and then wait for capacitor charging. Recommended waiting time is 3 ms if 1 µF

capacitor is used.

STM32F373VC 数据表(PDF) 114 Page - STMicroelectronics

STM32F373VC 数据表(HTML) 114 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

数据表下载