Texas Instruments LMK04828BISQ/NOPB +BOM
The Texas Instruments LMK04828BISQ/NOPB is a high-performance clock jitter cleaner. With a dual-loop PLL architecture, it offers ultra-low RMS jitter (88fs in 12kHz - 20MHz). Supporting JEDEC JESD204B, it can drive 7 target devices. It provides 15 differential clock outputs up to 3.1GHz, with programmable LVPECL, LVDS, etc. types. Operating from 3.15V - 3.45V across -40°C to 85°C, it suits wireless comms, data centers, test gear, automotive, and aerospace applications needing precise clocking.
Texas Instruments LMK04828BISQ/NOPB's Feature
High-performance Clock Processing Capability
- JEDEC JESD204B Support: It can provide clock and SYSREF signals for up to 7 JESD204B target devices, supporting the JEDEC JESD204B standard and meeting the clock requirements of relevant systems.
- Ultra-low RMS Jitter: In the frequency band from 12kHz to 20MHz, the RMS jitter is as low as 88fs; in the frequency band from 100Hz to 20MHz, the RMS jitter is 91fs; at a frequency of 245.76MHz, the noise floor is as low as -162.5dBc/Hz, ensuring high-precision clock output.
- Abundant Clock Outputs: PLL2 can provide up to 14 differential device clocks, including up to 7 SYSREF clocks. The maximum clock output frequency can reach 3.1GHz, and the output types can be programmed as LVPECL, LVDS, HSDS, and LCPECL to adapt to the interface requirements of different devices.
- PLL1 Auxiliary Output: PLL1 can provide up to 1 buffered VCXO/crystal output. The output types can also be programmed as LVPECL, LVDS, and 2xLVCMOS, providing a stable clock reference for external devices.
- It adopts a dual-loop PLLatinum™ PLL architecture. PLL1 has up to 3 redundant input clocks, supporting both automatic and manual switching modes. It has seamless switching and signal loss detection functions, and integrates a low-noise crystal oscillator circuit. When the input clock is lost, it can enter the hold mode. The normalized [1Hz] PLL noise floor of PLL2 is -227dBc/Hz, the phase detector rate is as high as 155MHz, and it integrates two low-noise VCOs. The output division ratio ranges from 1 to 32 (both even and odd numbers), which can be flexibly configured to meet different clock frequency requirements.
- It has precise digital delay and dynamically adjustable analog delay with a step size of 25ps, enabling precise control of the clock output phase and meeting the requirements for clock phase synchronization in different applications.
- It supports multiple operating modes such as dual PLL, single PLL, and clock distribution, and can be flexibly configured according to specific application requirements.
- The operating temperature range is from -40°C to 85°C, and it supports a PCB temperature of up to 105°C (measured at the thermal pad), making it suitable for various industrial environments.
- The operating voltage range is from 3.15V to 3.45V, enabling it to adapt to different power supply conditions.
- It is packaged in a 64-pin QFN (9.0mm×9.0mm×0.8mm), which is convenient for installation and integration into various circuit boards.
Texas Instruments LMK04828BISQ/NOPB's Applications
The Texas Instruments LMK04828BISQ/NOPB is a versatile clock jitter cleaner with applications in various fields. In wireless communication, it's used in base stations and small cells for precise synchronization of components. In data centers, it serves servers, storage systems, and network switches to ensure reliable high - speed data processing and transmission. For test and measurement equipment like oscilloscopes and signal generators, it provides accurate reference clocks. It also plays a crucial role in automotive electronics, such as in ADAS and infotainment systems, and in aerospace and defense applications like radar, sonar, and satellite communication systems, where precise timing is essential.
Texas Instruments LMK04828BISQ/NOPB's Attributes
| Function | Dual-loop PLL | Number of outputs | 15 |
| RMS jitter (fs) | 88 | Output frequency (min) (MHz) | 0.289 |
| Output frequency (max) (MHz) | 3080 | Input type | LVCMOS, LVDS, LVPECL |
| Output type | LVCMOS, LVDS, LVPECL | Supply voltage (min) (V) | 3.15 |
| Supply voltage (max) (V) | 3.45 | Features | JESD204B |
| Rating | Catalog | Operating temperature range (°C) | -40 to 85 |
| Number of input channels | 3 |
Texas Instruments LMK04828BISQ/NOPB's Datasheet
Texas Instruments LMK04828BISQ/NOPB's Category-Clock, Timing & Frequency ICs
Clock, Timing & Frequency Integrated Circuits (ICs) are the "time commanders" of modern electronic systems. They precisely provide timing and frequency signals for various circuits. A clock integrated circuit is responsible for the generation, processing, distribution, regulation, and control of timing signals within an electronic system. A timing integrated circuit governs the sequence of electronic events, while a frequency integrated circuit enables the circuit to accurately lock onto the frequency of an incoming radio signal. These integrated circuits boast a rich and diverse range of functions. Clock drivers and distributors are tasked with the efficient transmission of clock signals. Clock synthesizers can generate specific frequencies as needed. Delay lines and timing elements accurately adjust signal delays. Clock buffers enhance the driving capability of signals. Bus repeaters ensure the stability of data bus signals. Function generator integrated circuits can output various waveforms. Phase detectors compare the phases of signals. Real-time clocks record time information. Timer circuits control time intervals, and watchdog timers monitor the operation of the system. Their application scenarios are extremely extensive. In the field of clock distribution with low jitter and low phase noise, they ensure the accuracy of high-speed data transmission. In wireless transceivers, they enable the stable modulation and demodulation of signals. Automatic Test Equipment (ATE) relies on them to precisely control the testing rhythm. In sensing applications, they guarantee the timing consistency of data collection. They also play an indispensable role in frequency conversion and low-frequency Phase-Locked Loops (PLLs).
Among them, the LMK04828BISQ/NOPB from Texas Instruments stands out as an outstanding product. This high-performance clock jitter attenuator and fan-out buffer features extremely low jitter performance and flexible configuration capabilities. In complex application scenarios such as communication and aerospace, it can provide stable and accurate clock signals for the system, meeting the increasingly stringent requirements of modern electronic systems for timing control. It has become a trusted key device for engineers when building high-performance electronic systems.
LMK04828BISQ/NOPB vs LMK04832NKDR
| Part number | |
|
|---|---|---|
| +BOM | Yes | Yes |
| Manufacturer | Texas Instruments | Texas Instruments |
| Package | WQFN-64 | WQFN-64 |
| Description | Low noise frequency synthesizer Clock Synthesizer / Jitter Cleaner Ultra-low-noise, 3.2-GHz, 15-output, JESD204B clock jitter cleaner with dual loop 64-WQFN -40 to 85 | Low noise frequency synthesizer Clock Synthesizer / Jitter Cleaner Ultra-low-noise, 3.2-GHz, 15-output, JESD204B clock jitter cleaner with dual loop 64-WQFN -40 to 85 |
| Stock | 9699 | 6357 |
| Function | Dual-loop PLL | Dual-loop PLL |
| Number of outputs | 15 | 15 |
| RMS jitter (fs) | 88 | 54 |
| Output frequency (min) (MHz) | 0.289 | 0.305 |
| Output frequency (max) (MHz) | 3080 | 3250 |
| Input type | LVCMOS, LVDS, LVPECL | LVCMOS, LVDS, LVPECL |
| Output type | LVCMOS, LVDS, LVPECL | LVCMOS, LVDS, LVPECL |
| Supply voltage (min) (V) | 3.15 | 3.15 |
| Supply voltage (max) (V) | 3.45 | 3.45 |
| Features | JESD204B | JESD204B |
| Rating | Catalog | Catalog |
| Operating temperature range (°C) | -40 to 85 | -40 to 85 |
| Number of input channels | 3 | 3 |
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