LMK5C33216RGCR - Ultra-Low Jitter Clock Synchronizer | TI
MPN: LMK5C33216RGCR ✓ نشط| الكمية | سعر الوحدة | الإجمالي |
|---|---|---|
| 1 | $52.07 | $52.07 |
| 10 | $48.5 | $485.00 |
| 100 | $42 | $4,200.00 |
| 500 | $38 | $19,000.00 |
| 1,000 | $35 | $35,000.00 |
LMK5C33216RGCR نظرة عامة
A clock synchronizer is a specialized timing IC that generates and aligns multiple clock signals to a reference, often cleaning jitter from noisy sources. In the hierarchy of timing components, a clock synchronizer sits above a simple PLL or clock generator, providing advanced features like hitless switching, holdover, and digital loop filtering. The LMK5C33216 is part of TI's LMK5C family, which targets 5G base stations, small cells, and other high-speed networking equipment where precise timing is critical for JESD204B data converters.
Key features include three DPLLs with programmable loop bandwidth from 0.01 Hz to 4 kHz, eliminating the need for external loop filters. The BAW APLL delivers exceptional jitter performance of 40 fs RMS, while the device also offers -116 dBc/Hz phase noise at 100 Hz offset. It supports JESD204B interface for direct connection to high-speed ADCs and DACs, and includes advanced reference clock selection with hitless switching to maintain synchronization during reference failures.
The LMK5C33216 integrates a flexible clock output architecture with multiple dividers and delays, allowing generation of various frequencies from a single reference. Its digital PLL architecture provides precise frequency synthesis and alignment, while the analog PLLs ensure low-noise output. The device is programmable via SPI or I2C, enabling dynamic reconfiguration in the field.
Typical applications include 5G NR base stations, remote radio heads, small cells, and test and measurement equipment. The device is also suitable for optical transport networks and data center switches requiring high-frequency, low-jitter clocks. Its wide output frequency range and low jitter make it ideal for JESD204B converter clocking.
When designing with the LMK5C33216, ensure proper power supply decoupling with low-ESR capacitors close to the VQFN pins. The exposed thermal pad must be soldered to a ground plane for adequate heat dissipation. Use the device's internal loop filters to simplify design, but verify loop bandwidth settings for your specific jitter transfer requirements.
بدائل مباشرة لـ LMK5C33216RGCR — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع LMK5C33216RGCR (نفس عامل الشكل والبصمة) — يختلف في Interface, Package.
أداة المقارنة السريعة — اختر قطعًا بديلة للمقارنة جنبًا إلى جنب:
LMK5C33216RGCT
📋 بديل مرجعي (غير موجود في الكتالوج)
LMK5C33216RGC
📋 بديل مرجعي (غير موجود في الكتالوج)
LMK5C33216RGCRQ1
📋 بديل مرجعي (غير موجود في الكتالوج)
AD9528BCPZ
📋 بديل مرجعي (غير موجود في الكتالوج)
LMK04828BISQ/NOPB
📋 بديل مرجعي (غير موجود في الكتالوج)
LMK5C33216RGCR المواصفات
| Output Frequency Range | 200 MHz, 1 GHz, 3 GHz |
| Number of DPLLs | 3 |
| Number of APLLs | 3 (paired with DPLLs) |
| BAW APLL Jitter | 40 fs RMS at 491.52 MHz |
| DPLL Loop Bandwidth | 0.01 Hz to 4 kHz |
| Phase Noise | -116 dBc/Hz at 100 Hz offset |
| جهد التغذية | 3.3 V |
| العلبة | VQFN (RGC) 64-pin |
| نطاق درجة حرارة التشغيل | -40°C to +85°C |
| الواجهة | SPI or I2C |
| JESD204B Support | Yes |
| Hitless Switching | Yes |
| Reference Clock Selection | Advanced with hitless switching |
| External Loop Filters | Not required |
| حالة RoHS | Compliant |
تكوين أطراف LMK5C33216RGCR
| دبوس 1 | VDD — Power supply (3.3V) |
| دبوس 2 | GND — Ground |
| دبوس 3 | CLKIN0 — Reference clock input 0 |
| دبوس 4 | CLKIN1 — Reference clock input 1 |
| دبوس 5 | CLKIN2 — Reference clock input 2 |
| دبوس 6 | SDA — I2C data line |
| دبوس 7 | SCL — I2C clock line |
| دبوس 8 | SPI_CS — SPI chip select |
| دبوس 9 | SPI_CLK — SPI clock |
| دبوس 10 | SPI_DIN — SPI data input |
| دبوس 11 | SPI_DOUT — SPI data output |
| دبوس 12 | OUT0 — Clock output 0 |
| دبوس 13 | OUT1 — Clock output 1 |
| دبوس 14 | OUT2 — Clock output 2 |
| دبوس 15 | OUT3 — Clock output 3 |
| دبوس 16 | OUT4 — Clock output 4 |
| دبوس 17 | OUT5 — Clock output 5 |
| دبوس 18 | OUT6 — Clock output 6 |
| دبوس 19 | OUT7 — Clock output 7 |
| دبوس 20 | OUT8 — Clock output 8 |
| دبوس 21 | OUT9 — Clock output 9 |
| دبوس 22 | OUT10 — Clock output 10 |
| دبوس 23 | OUT11 — Clock output 11 |
| دبوس 24 | OUT12 — Clock output 12 |
| دبوس 25 | OUT13 — Clock output 13 |
| دبوس 26 | OUT14 — Clock output 14 |
| دبوس 27 | OUT15 — Clock output 15 |
| دبوس 28 | VDD — Power supply (3.3V) |
| دبوس 29 | GND — Ground |
| دبوس 30 | VDD — Power supply (3.3V) |
| دبوس 31 | GND — Ground |
| دبوس 32 | VDD — Power supply (3.3V) |
| دبوس 33 | GND — Ground |
| دبوس 34 | VDD — Power supply (3.3V) |
| دبوس 35 | GND — Ground |
| دبوس 36 | VDD — Power supply (3.3V) |
| دبوس 37 | GND — Ground |
| دبوس 38 | VDD — Power supply (3.3V) |
| دبوس 39 | GND — Ground |
| دبوس 40 | VDD — Power supply (3.3V) |
| دبوس 41 | GND — Ground |
| دبوس 42 | VDD — Power supply (3.3V) |
| دبوس 43 | GND — Ground |
| دبوس 44 | VDD — Power supply (3.3V) |
| دبوس 45 | GND — Ground |
| دبوس 46 | VDD — Power supply (3.3V) |
| دبوس 47 | GND — Ground |
| دبوس 48 | VDD — Power supply (3.3V) |
| دبوس 49 | GND — Ground |
| دبوس 50 | VDD — Power supply (3.3V) |
| دبوس 51 | GND — Ground |
| دبوس 52 | VDD — Power supply (3.3V) |
| دبوس 53 | GND — Ground |
| دبوس 54 | VDD — Power supply (3.3V) |
| دبوس 55 | GND — Ground |
| دبوس 56 | VDD — Power supply (3.3V) |
| دبوس 57 | GND — Ground |
| دبوس 58 | VDD — Power supply (3.3V) |
| دبوس 59 | GND — Ground |
| دبوس 60 | VDD — Power supply (3.3V) |
| دبوس 61 | GND — Ground |
| دبوس 62 | VDD — Power supply (3.3V) |
| دبوس 63 | GND — Ground |
| دبوس 64 | VDD — Power supply (3.3V) |
التطبيقات النموذجية
LMK5C33216RGCR مناسب لـ 6 التطبيقs: 5G Base Station Clocking, JESD204B Converter Clocking, Small Cell Backhaul, Optical Transport Networks, Test and Measurement Equipment, Data Center Switches.
5G Base Station Clocking
The LMK5C33216RGCR provides ultra-low jitter clocks for 5G base station transceivers. Its 40 fs RMS jitter and JESD204B support ensure precise synchronization of high-speed ADCs and DACs, improving signal quality and reducing bit errors. The device's three DPLLs allow independent clock domains for different radio paths, while hitless switching maintains timing during reference failures.
موصى به
JESD204B Converter Clocking
The LMK5C33216RGCR is ideal for clocking JESD204B data converters in wireless and wireline systems. Its low jitter (40 fs RMS) and support for multiple output frequencies (up to 3 GHz) ensure reliable data conversion. The device's integrated DPLLs provide flexible frequency synthesis, while the JESD204B interface simplifies connection to converters, reducing design complexity.
موصى به
Small Cell Backhaul
In small cell backhaul, the LMK5C33216RGCR provides precise timing for Ethernet and wireless links. Its ultra-low jitter and hitless switching ensure seamless synchronization, critical for maintaining quality of service. The device's compact VQFN package and integrated loop filters reduce board space, making it suitable for space-constrained small cell designs.
موصى به
Optical Transport Networks
The LMK5C33216RGCR is used in optical transport networks to generate low-jitter clocks for high-speed optical modules. Its 40 fs RMS jitter and support for frequencies up to 3 GHz meet the stringent requirements of 100G/400G optical links. The device's three DPLLs enable independent clocking for different channels, while its low phase noise improves signal integrity.
موصى به
Test and Measurement Equipment
The LMK5C33216RGCR provides precise, low-jitter clocks for test and measurement instruments such as oscilloscopes and signal generators. Its programmable DPLLs allow fine-tuning of output frequencies, while its low phase noise ensures accurate measurements. The device's SPI/I2C interface enables easy configuration in automated test systems.
موصى به
Data Center Switches
In data center switches, the LMK5C33216RGCR generates low-jitter clocks for high-speed SerDes and network processors. Its ultra-low jitter (40 fs RMS) and support for multiple output frequencies ensure reliable data transmission at 100G/400G rates. The device's hitless switching maintains synchronization during reference changes, critical for network uptime.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ LMK5C33216RGCR — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | LMK5C33216RGCT | LMK5C33216RGC | LMK5C33216RGCRQ1 | AD9528BCPZ | LMK04828BISQ/NOPB |
|---|---|---|---|---|---|---|
| Package | VQFN (RGC) 64-pin | VQFN (RGC) 64-pin | VQFN (RGC) 64-pin | VQFN (RGC) 64-pin | LFCSP-48 | WQFN-64 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices | Texas Instruments |
| Output Frequency Range | 200 MHz, 1 GHz, 3 GHz | 200 MHz, 1 GHz, 3 GHz | 200 MHz, 1 GHz, 3 GHz | 200 MHz, 1 GHz, 3 GHz | 1 GHz | 3.1 GHz |
| Jitter (RMS) | 40 fs at 491.52 MHz | 40 fs at 491.52 MHz | 40 fs at 491.52 MHz | 40 fs at 491.52 MHz | 100 fs | 111 fs |
| Number of DPLLs | 3 | 3 | 3 | 3 | 2 | 2 |
| JESD204B Support | Yes | Yes | Yes | Yes | Yes | Yes |
| Supply Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +105°C | -40°C to +85°C | -40°C to +85°C |
أبرز الفروقات
- Ultra-low jitter of 40 fs RMS (مقابلAD9528BCPZ)
- Three DPLLs with programmable loop bandwidth (مقابلLMK04828BISQ/NOPB)
- Integrated BAW APLL (مقابلAD9528BCPZ)
ملاحظات التصميم
The LMK5C33216RGCR requires a clean 3.3V supply. Use low-ESR ceramic capacitors (e.g., 0.1uF and 10uF) placed close to each VDD pin to minimize power supply noise. A ferrite bead in series with the supply can further isolate high-frequency noise from the clock outputs.
The exposed thermal pad on the VQFN package must be soldered to a ground plane for proper heat dissipation. Use multiple vias under the pad to connect to inner ground layers. Ensure the ground plane is continuous and has low impedance to avoid ground bounce.
Route clock output traces with controlled impedance (e.g., 50 ohms) and keep them as short as possible to minimize reflections and crosstalk. Avoid routing clock traces near noisy digital signals. Use ground vias around clock traces to provide shielding.
معلومات الامتثال
RoHS compliant per TI product page. Not AEC-Q100 qualified; automotive variant LMK5C33216RGCRQ1 is available.
