LINEAR TECHNOLOGY LTC6909 3 A 8 Osilator Multifaz Sòti ak SSFM
DESKRIPSYON
Sikwi demonstrasyon 1446 prezante osilator pwodiksyon milti-pli LTC6909 ak modulasyon frekans spectre gaye (SSFM). LTC®6909 a se yon osilator presizyon fasil pou itilize ki ka bay 1-, 2-, 3-, 4-, 5-, 6-, 7- oswa 8-faz pwodiksyon senkronize. LTC6909 gaye spectre frekans modulation (SSFM), ka pèmèt amelyore pèfòmans elektwomayetik konpatibilite (EMC). Uit pwodiksyon separe bay jiska uit siyal revèy tren-a-ray, 50% sik devwa. W ap itilize twa lojik entrées, sorties sont configuré pou faz separasyon, sòti de 45° pou 120° (twa a uit faz). Pwodiksyon revèy yo kapab tou fèt ba oswa konfigirasyon pou Hi-Z. Yon sèl rezistans (RSET) konbine avèk konfigirasyon faz la, mete frekans pwodiksyon an, ki baze sou fòmil sa a:
fOUT = (20MHz x 10k)/(RSET x PH)
kote PH = 3, 4, 5, 6, 7 oswa 8
ranje fOUT la se 12.5kHz a 6.67MHz.
Antre lojik PH0, PH1 ak PH2 defini mòd operasyon milti-faz LTC6909 epi kontwole rezilta li yo jan sa a:
PH2 PH1 PH0 MÒD
0 0 0 Tout Sorti yo Flote (Hi-Z)
0 0 1 Tout Sorti yo kenbe ba
0 1 0 Mòd 3-faz (PH = 3)
0 1 1 Mòd 4-faz (PH = 4)
1 0 0 Mòd 5-faz (PH = 5)
1 0 1 Mòd 6-faz (PH = 6)
1 1 0 Mòd 7-faz (PH = 7)
1 1 1 Mòd 8-faz (PH = 8)
Yon DC1446 gen yon LTC6909 ak tèminal tès pou uit rezilta yo. Yo bay kavalye sou tablo pou mete entrées faz LTC6909 (PH0, PH1 ak PH2) ak modulasyon SSFM la. Rezis-tor frekans fikse abò a (RSET) se pre-chaje ak yon re-rezistans sifas 100k (anplis de sa, yo bay de resipyan PIN pou itilize yon rezistans RSET plon).
Design files pou tablo chan de kous sa a ki disponib.
Rele faktori LTC a. LTC, LT se mak komèsyal ki anrejistre nan Linear Technology Corporation.
RAPID PWOSEDI K STARTMANSE
Sikwi demonstrasyon 1446 fasil pou mete sou pye ak teste. Gade nan Figi 1 pou konfigirasyon tès rapid la epi swiv pwosedi ki anba a:
- Mete kavalye nan pozisyon sa yo:
JP3 (PH0) pou V+, JP4 (PH1) pou V+, JP1 (PH2) pou V+ ak JP1 (MOD) pou SSFM OFF. - 2. Mete ekipman pou pouvwa a 5V.
- Limen ekipman pou pouvwa a.
- Avèk yon sond 10x ki konekte ak OUT1 osiloskop la ta dwe montre yon onn kare 5V, 250kHz (± 4.5%).
KÒMANSMAN RAPID SET-UP 
REMAK: 6909 rezilta yo (OUT1-OUT8) ka kondwi 1k ak 50pF chaj. Si yo itilize yon analizeur spectre pou mezire Pleasant spectre gaye a Lè sa a, sèvi ak yon pwofonde enpedans segondè pou kontwole rezilta yo (tipikman enpedans opinyon yon analizeur spectre se 50 ohm).
DEMO SIRCUIT 1446 QUICK START GUIDE – LTC6909 3 A 8 SOZIILATÈ MULTIFAZ AK SSFM 
LIS PATI DC1446
Kantite atik Referans Pati Deskripsyon Manifakti / Pati #
1 1 C1 CAP., X7R, 10uF, 10V, 20% 1206 AVX, 1206ZC106MAT2A
2 2 C5,C2 CAP., X7R, 0.1uF, 16V, 10% 0402 TDK, C1005X7R1C104K
3 2 C3,C6 CAP., X5R, 1uF, 6.3V, 10% 0402 TDK, C1005X5R0J105K
4 1 C4 CAP., C0G, 1000pF, 25V, 5% 0402 TDK, C1005C0G1E102J
5 2 E1,E2 JACK, KEYSTONE BANANN, 575-4
6 10 E3-E12 TESTPOINT, TURRET, .094″ pbf MILL-MAX, 2501-2-00-80-00-00-07-0
7 3 JP1,JP3,JP4 3 PIN 0.079 SÈL RANJE TÈT SAMTEC, TMM103-02-LS
8 1 JP2 2X4, 0.079 DOUBLE RANG TÈT SAMTEC, TMM104-02-LD
9 4 xJP1-xJP4 SHUNT, .079″ SANT SAMTEC, 2SN-BK-G
10 0 RSET(louvri) Res., 0805
11 2 E13,E14 PIN, 0.057 twou Mill-Max, 8427-0-15-15-30-84-04-0
12 1 U1 IC., LTC6909CMS, MSOP-16 Lineary Tech., LTC6909CMS
13 4 (KANPE) KEYSTONE, NYLON 0.375″ KEYSTONE, 8832(SNAP ON)
Dokiman / Resous
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LINEAR TECHNOLOGY LTC6909 3 A 8 Osilator Multifaz Sòti ak SSFM [pdfGid Itilizatè LTC6909 3 A 8 Osilator Multiphase Sòti ak SSFM, LTC6909, 3 A 8 Osilator Multiphase Sòti ak SSFM |
