LINEAR TECHNOLOGY LTC6909 3 Rau 8 Tso Tawm Multiphase Oscillator nrog SSFM
Kev piav qhia
Ua qauv qhia Circuit Court 1446 nta LTC6909 ntau cov zis oscillator nrog kis spectrum zaus hloov kho (SSFM). LTC®6909 yog ib qho yooj yim siv precision oscillator uas tuaj yeem muab 1-, 2-, 3-, 4-, 5-, 6-, 7- lossis 8-theem synchronized outputs. Lub LTC6909 kis spectrum zaus hloov kho (SSFM), tuaj yeem ua rau txhim kho electromagnetic compatibility (EMC) kev ua tau zoo. Yim cais tawm muab txog yim lub tsheb ciav hlau-rau-rail, 50% lub luag haujlwm lub voj voog moos teeb liab. Siv peb lub logic inputs, cov zis tau teeb tsa rau theem sib cais, xws li 45 ° txog 120 ° (peb mus rau yim theem). Lub moos tso zis kuj tseem tuaj yeem tuav qis lossis teeb tsa rau Hi-Z. Ib qho resistor (RSET) ua ke nrog cov theem teeb tsa, teeb tsa cov zis zaus, raws li cov qauv hauv qab no:
fOUT = (20MHz x 10k)/(RSET x PH)
PH = 3, 4, 5, 6, 7 lossis 8
FOUT ntau yog 12.5kHz txog 6.67MHz.
Lub PH0, PH1 thiab PH2 logic inputs txhais lub LTC6909 ntau theem ntawm kev ua haujlwm thiab tswj nws cov zis raws li hauv qab no:
PH2 PH1 PH0 MODE
0 0 0 Tag nrho cov zis yog ntab (Hi-Z)
0 0 1 Tag nrho cov txiaj ntsig tau tuav qis
0 1 0 3-Phase Mode (PH = 3)
0 1 1 4-Phase Mode (PH = 4)
1 0 0 5-Phase Mode (PH = 5)
1 0 1 6-Phase Mode (PH = 6)
1 1 0 7-Phase Mode (PH = 7)
1 1 1 8-Phase Mode (PH = 8)
A DC1446 muaj LTC6909 thiab xeem terminals rau yim qhov tawm. Nyob rau hauv lub rooj tsavxwm jumpers yog muab los teem lub LTC6909 theem inputs (PH0, PH1 thiab PH2) thiab lub SSFM modulation. Lub hauv paus zaus teeb tsa resis-tor (RSET) yog pre-loaded nrog ib tug 100k nto mount re-sistor (ntxiv, ob tus pin receptacles yog muab rau siv ib tug leaded RSET resistor).
Tsim files rau lub rooj tsav xwm Circuit Court no muaj.
Hu rau LTC Hoobkas. LTC, LT yog cov cim lag luam ntawm Linear Technology Corporation.
QHOV TSEEM CEEB TSHAJ PLAWS
Kev ua qauv qhia Circuit Court 1446 yog qhov yooj yim rau kev teeb tsa thiab sim. Saib daim duab 1 rau kev teeb tsa ceev ceev thiab ua raws li cov txheej txheem hauv qab no:
- Muab cov jumpers hauv cov haujlwm hauv qab no:
JP3 (PH0) to V+, JP4 (PH1) to V+, JP1 (PH2) to V+ and JP1 (MOD) to SSFM OFF. - 2. Teem lub hwj chim rau 5V.
- Qhib lub hwj huam mov.
- Nrog 10x sojntsuam txuas nrog OUT1 lub oscilloscope yuav tsum qhia 5V, 250kHz, squarewave (± 4.5%).
QUICK pib SET-UP 
CEEB TOOM: 6909 outputs (OUT1-OUT8) tuaj yeem tsav 1k thiab 50pF loads. Yog hais tias lub spectrum analyzer yog siv los ntsuas qhov sib kis spectrum bandwidth ces siv lub siab impedance sojntsuam xyuas cov outputs (feem ntau lub input impedance ntawm ib tug spectrum analyzer yog 50 ohms).
DEMO Circuit 1446 QUICK PIB NTXIV – LTC6909 3 TO 8 OUTPUT MULTIPHASE OSCILLATOR Nrog SSFM 
DC1446 QHOV TSEEB
Yam Qty Reference Part Description Chaw tsim tshuaj paus / Part #
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, BANANA KEYSTONE, 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 SINGLE ROW HEADER SAMTEC, TMM103-02-LS
8 1 JP2 2X4, 0.079 DOUBLE ROW HEADER SAMTEC, TMM104-02-LD
9 4 xJP1-xJP4 SHUNT, .079 "CENTER SAMTEC, 2SN-BK-G
10 0 RSET(qhib) Res., 0805
11 2 E13, E14 Pin, 0.057 qhov Mill-Max, 8427-0-15-15-30-84-04-0
12 1 U1 IC., LTC6909CMS, MSOP-16 Linear Tech., LTC6909CMS
13 4 (TSUM-OFF) NYLON 0.375 "KEYSTONE, 8832 (SNAP ON)
Cov ntaub ntawv / Cov ntaub ntawv
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LINEAR TECHNOLOGY LTC6909 3 Rau 8 Tso Tawm Multiphase Oscillator nrog SSFM [ua pdf] Cov neeg siv phau ntawv qhia LTC6909 3 Rau 8 Tso Tawm Multiphase Oscillator nrog SSFM, LTC6909, 3 Rau 8 Tso Tawm Multiphase Oscillator nrog SSFM |
