The LMK04906 is the industry's highest performance clock jitter attenuator with superior clock jitter cleaning, generation, and distribution with advanced features to meet high performance timing application needs.
The LMK04906 accepts 3 clock inputs ranging from 1 kHz to 500 MHz and generates 6 unique clock output frequencies ranging from 284 kHz to 2.6 GHz. The LMK04906 can also buffer a crystal or VCXO to generate a 7th unique clock frequency.
The device provides virtually all frequency translation combinations required for SONET, Ethernet, Fibre Channel and multi-mode Wireless Base Stations.
The LMK04906 input clock frequency and clock multiplication ratio are programmable through a SPI interface.
PART NUMBER | VCO FREQUENCY | REFERENCE INPUTS |
---|---|---|
LMK04906 | 2370 to 2600 MHz | 3 |
Changes from E Revision (August 2016) to F Revision
Changes from D Revision (May 2013) to E Revision
Changes from C Revision (May 2013) to D Revision
PIN | I/O | TYPE | DESCRIPTION(1) | |
---|---|---|---|---|
NAME | NO. | |||
Vcc13 | 1 | — | PWR | Power Supply for CLKou0 |
NC | 2, 5, 7, 8, 9, 15, 17, 19 22, 47, 51, 55, 56, 60, 61, 64 |
— | No Connect | These pins must be left floating. |
CLKout0*, CLKout0 | 3, 4 | O | Programmable | Clock output 0. |
SYNC / Status_CLKin2 | 6 | I/O | Programmable | CLKout Synchronization input or CLKin2 Status output. |
Vcc1 | 10 | — | PWR | Power supply for VCO LDO. |
LDObyp1 | 11 | — | ANLG | LDO Bypass, bypassed to ground with 10 µF capacitor. |
LDObyp2 | 12 | — | ANLG | LDO Bypass, bypassed to ground with a 0.1 µF capacitor. |
CLKout1, CLKout1* | 13, 14 | O | Programmable | Clock output 1. |
Vcc2 | 16 | — | PWR | Power supply for CLKout1. |
Vcc3 | 18 | — | PWR | Power supply for CLKout2 |
CLKout2*, CLKout2 | 20, 21 | O | Programmable | Clock output 2 |
GND | 23 | — | PWR | Ground |
Vcc4 | 24 | — | PWR | Power supply for digital. |
CLKin1, CLKin1* | 25, 26 | I | ANLG | Reference Clock Input Port 1 for PLL1. AC or DC Coupled. |
FBCLKin, FBCLKin* | Feedback input for external clock feedback input (0-delay mode). AC or DC Coupled. | |||
Fin/Fin* | External VCO input (External VCO mode). AC or DC Coupled. | |||
Status_Holdover | 27 | I/O | Programmable | Programmable status pin, default readback output. Programmable to holdover mode indicator. Other options available by programming. |
CLKin0, CLKin0* | 28, 29 | I | ANLG | Reference Clock Input Port 0 for PLL1. AC or DC Coupled. |
Vcc5 | 30 | — | PWR | Power supply for clock inputs. |
CLKin2, CLKin2* | 31, 32 | I | ANLG | Reference Clock Input Port 2 for PLL1, AC or DC Coupled. |
Status_LD | 33 | I/O | Programmable | Programmable status pin, default lock detect for PLL1 and PLL2. Other options available by programming. |
CPout1 | 34 | O | ANLG | Charge pump 1 output. |
Vcc6 | 35 | — | PWR | Power supply for PLL1, charge pump 1. |
OSCin, OSCin* | 36, 37 | I | ANLG | Feedback to PLL1, Reference input to PLL2. AC Coupled. |
Vcc7 | 38 | — | PWR | Power supply for OSCin port. |
OSCout0, OSCout0* | 39, 40 | O | Programmable | Buffered output 0 of OSCin port. |
Vcc8 | 41 | — | PWR | Power supply for PLL2, charge pump 2. |
CPout2 | 42 | O | ANLG | Charge pump 2 output. |
Vcc9 | 43 | — | PWR | Power supply for PLL2. |
LEuWire | 44 | I | CMOS | MICROWIRE Latch Enable Input. |
CLKuWire | 45 | I | CMOS | MICROWIRE Clock Input. |
DATAuWire | 46 | I | CMOS | MICROWIRE Data Input. |
Vcc10 | 48 | — | PWR | Power supply for CLKout3. |
CLKout3, CLKout3* | 49, 50 | O | Programmable | Clock output 3. |
Vcc11 | 52 | — | PWR | Power supply for CLKout4. |
CLKout4, CLKout4* | 53, 54 | O | Programmable | Clock output 4. |
Vcc12 | 57 | — | PWR | Power supply for CLKout5. |
CLKout5, CLKout5* | 58, 59 | O | Programmable | Clock output 5. |
Status_CLKin0 | 62 | I/O | Programmable | Programmable status pin. Default is input for pin control of PLL1 reference clock selection. CLKin0 LOS status and other options available by programming. |
Status_CLKin1 | 63 | I/O | Programmable | Programmable status pin. Default is input for pin control of PLL1 reference clock selection. CLKin1 LOS status and other options available by programming. |
DAP | DAP | — | GND | DIE ATTACH PAD, connect to GND. |