Overview
The HMC7043LP7FE, produced by Analog Devices Inc., is a high-performance clock buffer designed to meet the stringent requirements of multicarrier GSM and LTE base station designs. This device offers a comprehensive range of clock management and distribution features, simplifying the design of baseband and radio card clock trees. It provides 14 low-noise and configurable outputs, enabling flexible interfacing with various components in a base transceiver station (BTS) system, including data converters, local oscillators, transmit/receive modules, FPGAs, and digital front-end ASICs.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Digital Input Signal Range | -0.1 | 3.6 | V | Safe Input Voltage Range | |
| Input Load (Digital Inputs) | 0.3 | pF | |||
| Input Voltage (Logic High) | 1.2 VCC | V | |||
| Input Voltage (Logic Low) | 0 | 0.5 VCC | V | ||
| SPI Bus Frequency | 10 | MHz | |||
| CML Mode Output Frequency | 1950 | MHz | -3 dB Bandwidth | ||
| LVDS Mode Output Frequency | 1700 | MHz | Maximum Operating Frequency | ||
| Output Rise Time (CML) | 175 | ps | fCLKOUT = 245.76 MHz, 20% to 80% | ||
| Output Duty Cycle (CML) | 47.5 | 50 | 52.5 | % | fCLKOUT = 1075 MHz (2150 MHz/2) |
| Package Type | 48-Lead QFN (7mm x 7mm w/ EP) |
Key Features
- Flexible Output Configuration: The HMC7043 provides 14 low-noise and configurable outputs, supporting various signaling standards such as CML, LVDS, LVPECL, and LVCMOS, and different bias conditions to adjust for varying board insertion losses.
- Independent Phase Management: Each of the 14 channels features independent frequency and phase adjustment, allowing for precise control over output signals.
- JESD204B/JESD204C Compliance: The device can generate up to seven DCLK and SYSREF clock pairs, meeting the requirements of JESD204B/JESD204C interfaces.
- RF SYNC Feature: This feature synchronizes multiple HMC7043 devices deterministically, ensuring all clock outputs start with the same edge.
- Programmable Termination: Outputs can be programmed for 50 Ω or 100 Ω internal and external termination options.
Applications
- GSM and LTE Base Stations: Designed to meet the requirements of multicarrier GSM and LTE base station designs, simplifying baseband and radio card clock tree designs.
- Base Transceiver Stations (BTS): Interfaces with various components in a BTS system, including data converters, local oscillators, transmit/receive modules, FPGAs, and digital front-end ASICs.
Q & A
- What is the primary application of the HMC7043LP7FE?
The HMC7043LP7FE is primarily used in multicarrier GSM and LTE base station designs to simplify baseband and radio card clock tree designs.
- How many configurable outputs does the HMC7043LP7FE provide?
The device provides 14 low-noise and configurable outputs).
- What signaling standards are supported by the HMC7043LP7FE?
The device supports CML, LVDS, LVPECL, and LVCMOS signaling standards).
- What is the RF SYNC feature in the HMC7043LP7FE?
The RF SYNC feature synchronizes multiple HMC7043 devices deterministically, ensuring all clock outputs start with the same edge).
- Can the output termination be programmed?
Yes, the outputs can be programmed for 50 Ω or 100 Ω internal and external termination options).
- What is the maximum operating frequency in LVDS mode?
The maximum operating frequency in LVDS mode is 1700 MHz).
- What is the package type of the HMC7043LP7FE?
The device is offered in a 48-lead QFN (7mm x 7mm w/ EP) package).
- Does the HMC7043LP7FE support JESD204B/JESD204C interfaces?
Yes, the device can generate up to seven DCLK and SYSREF clock pairs, meeting the requirements of JESD204B/JESD204C interfaces).
- Can the phase of each output be independently managed?
Yes, each of the 14 channels features independent frequency and phase adjustment).
- What is the typical input load for digital inputs?
The typical input load for digital inputs is 0.3 pF).
