Clock Multiplier. Si5386 Datasheet

Si5386 Multiplier. Datasheet pdf. Equivalent

Part Si5386
Description Any-Output wireless Jitter Attenuator / Clock Multiplier
Feature Si5386 Data Sheet 12-Channel, Any-Frequency, Any-Output wireless Jitter Attenuator / Clock Multipli.
Manufacture Silicon Laboratories
Datasheet
Download Si5386 Datasheet



Si5386
Si5386 Data Sheet
12-Channel, Any-Frequency, Any-Output wireless Jitter Attenu-
ator / Clock Multiplier with Ultra-Low Noise
The Si5386 is an ultra high performance wireless jitter attenuator with any frequency
outputs for eCPRI (ethernet-based Common Public Radio Interface) applications,
which demand the highest level of integration and phase noise performance. Based
on Silicon Laboratories’ 4th generation DSPLL technology, the Si5386 combines fre-
quency synthesis and jitter attenuation in a highly integrated digital solution with a
cost-effective oscillator, and without the need of any external loop filter components.
The fixed frequency oscillator provides frequency stability for free-run and holdover
modes. This all-digital solution provides superior performance that is highly immune
to external board disturbances such as power supply noise.
eCPRI-based remote radio heads and fixed wireless systems require a diverse set of
clocks such as ADC/DAC, RF LOs, and Ethernet clocks. The Si5386 architecture is
designed to deliver high-performance JESD204B DCLK and SYSREF clock pairs
and flexible any-rate clocks for non-CPRI clocks such as Ethernet and system refer-
ence clocks all from a single IC.
Applications:
• Wireless Infrastructure
• eCPRI RRH (Remote Radio Head)
• BBU (Baseband Unit)
• Small Cell and μBTS
• DOCSIS
• Test and Measurement
KEY FEATURES
• Flexible timing in a single IC
• Generates any combination of output
frequencies from any input frequency
• Input frequency range:
• Differential: 7.68 MHz to 750 MHz
• LVCMOS: 7.68 MHz to 250 MHz
• Output frequency range (Integer):
• Differential: up to 3 GHz
• Output frequency range (fractional):
• Differential: up to 735 MHz
• LVCMOS: up to 250 MHz
• Ultra-low RMS jitter:
• 72 fs typ (12 kHz–20 MHz)
• Phase noise of 122.88MHz carrier frequency:
• 118 dBc/Hz @ 100Hz offset
• ITU-T G.8262 compliant
54 MHz
OSC
IN_SEL
IN0
IN1
IN2
IN3/FB_IN
I2C_SEL
SDA/SDIO
A1/SDO
SCLK
A0/CS
LOL
INTR
÷INT
÷INT
÷INT
÷INT
SPI/
I2C
DSPLL
B
Multi
Synth
Multi
Synth
Multi
Synth
Multi
Synth
Multi
Synth
÷INT
÷INT
÷0INT
÷INT
÷INT
÷INT
÷0INT
÷INT
÷INT
NVM
Status
Monitors
PDN RST
÷INT
÷0INT
÷INT
SYNC OE
OUT0A
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
OUT9
OUT9A
silabs.com | Building a more connected world.
Rev. 1.01



Si5386
Table of Contents
1. Features List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1 Frequency Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 DSPLL Loop Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.3 Fastlock Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.4 Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.4.1 Initialization and Reset . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4.2 Freerun Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4.3 Lock Acquisition Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4.4 Locked Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4.5 Holdover Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.4.6 VCO Freeze Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.5 External Reference (XA/XB) . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.6 Inputs (IN0, IN1, IN2, IN3) . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.6.1 Manual Input Switching (IN0, IN1, IN2, IN3) . . . . . . . . . . . . . . . . . . . 9
3.6.2 Automatic Input Selection (IN0, IN1, IN2, IN3) . . . . . . . . . . . . . . . . . .10
3.6.3 Hitless Input Switching . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.6.4 Ramped Input Switching . . . . . . . . . . . . . . . . . . . . . . . . .10
3.6.5 Glitchless Input Switching . . . . . . . . . . . . . . . . . . . . . . . . .10
3.6.6 Input Configuration and Terminations . . . . . . . . . . . . . . . . . . . . .11
3.7 Fault Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.7.1 Input LOS Detection. . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.7.2 Reference Clock LOS Detection. . . . . . . . . . . . . . . . . . . . . . .12
3.7.3 OOF Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.7.4 LOL Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
3.7.5 Interrupt Pin (INTRb) . . . . . . . . . . . . . . . . . . . . . . . . . .15
3.8 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
3.8.1 Output Crosspoint . . . . . . . . . . . . . . . . . . . . . . . . . . .15
3.8.2 Output Signal Format . . . . . . . . . . . . . . . . . . . . . . . . . .16
3.8.3 Output Terminations. . . . . . . . . . . . . . . . . . . . . . . . . . .16
3.8.4 Programmable Common Mode Voltage For Differential Outputs . . . . . . . . . . . .17
3.8.5 LVCMOS Output Impedance and Drive Strength Selection. . . . . . . . . . . . . .17
3.8.6 LVCMOS Output Signal Swing . . . . . . . . . . . . . . . . . . . . . . .17
3.8.7 LVCMOS Output Polarity . . . . . . . . . . . . . . . . . . . . . . . . .17
3.8.8 Output Enable/Disable . . . . . . . . . . . . . . . . . . . . . . . . . .17
3.8.9 Output Disable During LOL . . . . . . . . . . . . . . . . . . . . . . . .17
3.8.10 Output Disable During Reference LOS . . . . . . . . . . . . . . . . . . . .17
3.8.11 Output Driver State When Disabled . . . . . . . . . . . . . . . . . . . . .18
3.8.12 Synchronous Output Disable Feature . . . . . . . . . . . . . . . . . . . .18
3.8.13 Zero Delay Mode . . . . . . . . . . . . . . . . . . . . . . . . . . .18
3.8.14 Output Divider (R) Synchronization . . . . . . . . . . . . . . . . . . . . .18
silabs.com | Building a more connected world.
Rev. 1.01 | 2





@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)