S2-LPS datasheet(12/73 Pages) STMICROELECTRONICS

12 / 73 page

1. SMPS output voltage 1.2 V, LDOs disable.

2. SMPS output voltage 1.8 V.

3.5

General characterization

Table 12. General characteristics

Parameter

Typ.

Unit

Frequency range

413 - 479

MHz

826 - 958

Data rate DR

2-(G)FSK

0.1 - 250

kbps

OOK/ASK

0.1 -125

Data rate accuracy

±100

ppm

Frequency deviation FDEV

0.15 - 500

kHz

3.6

Frequency synthesizer

Table 13. Frequency synthesizer parameters

Parameter

Test conditions

50 MHz

Unit

Frequency step size

Out-loop divider ratio = 4

23.8

RF carrier phase noise 433 MHz

10 kHz

-109

dBc/Hz

100 kHz

-110

1 MHz

-124

10 MHz

-141

RF carrier phase noise 868 MHz

10 kHz

-102

100 kHz

-103

1 MHz

-117

10 MHz

-138

3.7

Crystal oscillator

Characteristics measured over recommended operating conditions unless otherwise specified. All typical values

are referred to 25 °C temperature, VBAT = 3.0 V.

The device supports crystals 26 MHz.

From now on in this document the XTAL oscillator will be indicated with

fXOandthedigitalclockwithfdig

•

if a 26 MHz crystal is used, this bit must be 1 (digital divider disabled):

fdig= fxo

(1)

In order to avoid potential RF performance degradations, the crystal frequency should be chosen to satisfy the

following equation:

nFCH−ROUNDnFCHfXOfXO≥1MHz

(2)

where n is an integer in the set [1-7, B] (B is the synthesizer’s divider ratio).

S2-LPS

General characterization

DS13831 - Rev 1

page 12/73

S2-LPS bảng dữ liệu(PDF) 12 Page - STMicroelectronics

S2-LPS bảng dữ liệu(HTML) 12 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

bảng dữ liệu tải về

Link URL