HMC7044 vs HMC7043 Stock & Price: 3.2GHz Jitter Attenuator & Clock Buffer
HMC7044 vs HMC7043: Which Clock IC Should You Choose?
High-speed ADCs, DACs, FPGAs and RF transceivers require low-jitter, phase-aligned clock signals. Two widely used Analog Devices clock products are the HMC7044 and HMC7043.
Although both devices support JESD204B and JESD204C systems, they perform different functions within the clock tree.
HMC7044 Dual-Loop Jitter Attenuator
The HMC7044 is a dual-loop clock generator and jitter attenuator designed for systems that must clean an incoming reference and generate multiple low-phase-noise device clocks.
It provides up to 14 configurable clock outputs with frequencies up to 3.2 GHz. The outputs can be configured for CML, LVDS, LVPECL or LVCMOS interfaces.
Important HMC7044 features include:
·Dual-loop PLL architecture
·Typical ultralow RMS jitter performance
·Up to 14 configurable DCLK and SYSREF outputs
·JESD204B and JESD204C synchronization
·Reference monitoring and hitless reference switching
·Frequency holdover capability
·Support for an external VCO input up to 6 GHz
The HMC7044 is commonly selected for high-speed data converter clocking, cellular infrastructure, phased-array reference generation, microwave baseband cards and multichannel test equipment.
Common ordering keywords include HMC7044LP10BE and HMC7044LP10BETR.
HMC7043 Clock Distribution Buffer
The HMC7043 is primarily a low-noise clock distribution device. It accepts an existing low-phase-noise clock and distributes synchronized copies to ADCs, DACs, FPGAs, local oscillators and RF transceiver channels.
The device provides 14 independently configurable outputs and supports deterministic synchronization across multiple HMC7043 devices.
Key HMC7043 features include:
·One clock input supporting frequencies up to 6 GHz
·Up to 14 clock outputs
·Maximum output frequency up to 3.2 GHz
·Independent frequency and phase adjustment
·JESD204B and JESD204C SYSREF generation
·Multidevice synchronization
·CML, LVDS, LVPECL and LVCMOS output support
Common ordering part numbers include HMC7043LP7FE and HMC7043LP7FETR.
HMC7044 and HMC7043 Comparison
| Feature | HMC7044 | HMC7043 |
| Main function | Jitter cleaning and clock generation | Low-noise clock distribution |
| PLL architecture | Dual-loop PLL | Clock buffer and divider |
| Number of outputs | Up to 14 | Up to 14 |
| Maximum output frequency | 3.2 GHz | 3.2 GHz |
| JESD204B/C support | Yes | Yes |
| Reference redundancy | Yes | No |
| Best suited for | Main system clock generation | Expanding an existing clock tree |
Which Device Should You Use?
Choose the HMC7044 when the incoming reference must be cleaned, monitored or switched between multiple sources. It is usually installed near the top of the system clock tree.
Choose the HMC7043 when a clean reference already exists and must be distributed to a large number of synchronized devices.
Some complex RF and data acquisition systems use both products: the HMC7044 generates and cleans the main clock, while one or more HMC7043 devices distribute it across multiple boards or channels.
HMC7044 and HMC7043 Sourcing Support
DataStorageIC supplies Analog Devices and legacy Hittite RF, microwave and timing components. We support HMC7044LP10BE, HMC7044LP10BETR, HMC7043LP7FE and HMC7043LP7FETR sourcing requests.
Customers can submit the exact part number, required quantity, target delivery date and application information for stock checking and quotation.
Availability is subject to confirmation at the time of inquiry.
