Electronic Components Datasheet Search |
|
SY58021UMITR Datasheet(PDF) 8 Page - Micrel Semiconductor |
|
SY58021UMITR Datasheet(HTML) 8 Page - Micrel Semiconductor |
8 / 9 page 8 Precision Edge® SY58021U Micrel, Inc. M9999-062405 hbwhelp@micrel.com or (408) 955-1690 Part Number Function Data Sheet Link SY58020U 6GHz, 1:4 CML Fanout Buffer/Translator http://www.micrel.com/product-info/products/sy58020u.shtml Internal I/O Termnations SY58021U 4GHz, 1:4 LVPECL Fanout Buffer/Translator http://www.micrel.com/product-info/products/sy58021u.shtml with Internal Termination SY58022U 5.5GHz, 1:4 Fanout Buffer/Translator http://www.micrel.com/product-info/products/sy58022u.shtml w/400mV LVPECL Outputs and Internal Terminations 16-MLF™ Manufacturing Guidelines www.amkor.com/products/notes_papers/MLF_AppNote_0902.pdf Exposed Pad Application Note M-0317 HBW Solutions http://www.micrel.com/product-info/as/solutions.shtml RELATED MICREL PRODUCTS AND SUPPORT DOCUMENTATION R2 82 Ω R2 82 Ω *Note. For +2.5V systems, R1 = 250 Ω, R2 = 62.5Ω ZO = 50Ω ZO = 50Ω +3.3V* +3.3V* VT = VCC —2V R1 130 Ω R1 130 Ω +3.3V* SY58021U Figure 4. Parallel Termination-Thevenin Equivalent LVPECL OUTPUT Z = 50 Ω Z = 50 Ω 50 Ω 50 Ω 50 Ω +3.3V +3.3V “source” “destination” Rb* C1 (optional) 0.01 µF * For +2.5V, Rb = 19Ω * For +3.3V, Rb = 46Ω to 50Ω Notes: 1. Power saving alternative to Thevenin termination. 2. Place termination resistors as close to destination inputs as possible. 3. Rb resistor sets the DC bias voltage, equal to VT. SY58021U VDD Figure 5. Parallel Termination (3-Resistor) LVPECL output have very low output impedance (open emitter), and small signal swing which results in low EMI. LVPECL is ideal for driving 50 Ω and 100Ω controlled impedance transmission lines. There are several techniques in terminating the LVPECL output, as shown in Figures 4 through 6. R2 82 Ω R2 82 Ω *Note: For +2.5V systems, R1 = 250 Ω, R2 = 62.5Ω ZO = 50Ω ZO = 50Ω +3.3V* +3.3V* VT = VCC —2V R1 130 Ω R1 130 Ω +3.3V* SY58021U Figure 6. Terminating Unused I/O |
Similar Part No. - SY58021UMITR |
|
Similar Description - SY58021UMITR |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |