LMK5C33216RGCR - Ultra-Low Jitter Clock Synchronizer | TI
MPN: LMK5C33216RGCR ✓ Hoạt động| Số lượng | Giá đơn vị | Phụ |
|---|---|---|
| 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 Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho LMK5C33216RGCR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với LMK5C33216RGCR (cùng hình factor và footprint) — khác nhau ở Interface, Package.
Công cụ so sánh nhanh — Chọn các bộ phận thay thế để so sánh song song:
LMK5C33216RGCT
📋 Tham chiếu thay thế (không có trong danh mục)
LMK5C33216RGC
📋 Tham chiếu thay thế (không có trong danh mục)
LMK5C33216RGCRQ1
📋 Tham chiếu thay thế (không có trong danh mục)
AD9528BCPZ
📋 Tham chiếu thay thế (không có trong danh mục)
LMK04828BISQ/NOPB
📋 Tham chiếu thay thế (không có trong danh mục)
LMK5C33216RGCR Thông số kỹ thuật
| 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 |
| Điện áp cung cấp | 3.3 V |
| Hộp | VQFN (RGC) 64-pin |
| Khoảng nhiệt độ hoạt động | -40°C to +85°C |
| Giao diện | SPI or I2C |
| JESD204B Support | Yes |
| Hitless Switching | Yes |
| Reference Clock Selection | Advanced with hitless switching |
| External Loop Filters | Not required |
| Trạng thái RoHS | Compliant |
Cấu hình chân LMK5C33216RGCR
| Chân 1 | VDD — Power supply (3.3V) |
| Chân 2 | GND — Ground |
| Chân 3 | CLKIN0 — Reference clock input 0 |
| Chân 4 | CLKIN1 — Reference clock input 1 |
| Chân 5 | CLKIN2 — Reference clock input 2 |
| Chân 6 | SDA — I2C data line |
| Chân 7 | SCL — I2C clock line |
| Chân 8 | SPI_CS — SPI chip select |
| Chân 9 | SPI_CLK — SPI clock |
| Chân 10 | SPI_DIN — SPI data input |
| Chân 11 | SPI_DOUT — SPI data output |
| Chân 12 | OUT0 — Clock output 0 |
| Chân 13 | OUT1 — Clock output 1 |
| Chân 14 | OUT2 — Clock output 2 |
| Chân 15 | OUT3 — Clock output 3 |
| Chân 16 | OUT4 — Clock output 4 |
| Chân 17 | OUT5 — Clock output 5 |
| Chân 18 | OUT6 — Clock output 6 |
| Chân 19 | OUT7 — Clock output 7 |
| Chân 20 | OUT8 — Clock output 8 |
| Chân 21 | OUT9 — Clock output 9 |
| Chân 22 | OUT10 — Clock output 10 |
| Chân 23 | OUT11 — Clock output 11 |
| Chân 24 | OUT12 — Clock output 12 |
| Chân 25 | OUT13 — Clock output 13 |
| Chân 26 | OUT14 — Clock output 14 |
| Chân 27 | OUT15 — Clock output 15 |
| Chân 28 | VDD — Power supply (3.3V) |
| Chân 29 | GND — Ground |
| Chân 30 | VDD — Power supply (3.3V) |
| Chân 31 | GND — Ground |
| Chân 32 | VDD — Power supply (3.3V) |
| Chân 33 | GND — Ground |
| Chân 34 | VDD — Power supply (3.3V) |
| Chân 35 | GND — Ground |
| Chân 36 | VDD — Power supply (3.3V) |
| Chân 37 | GND — Ground |
| Chân 38 | VDD — Power supply (3.3V) |
| Chân 39 | GND — Ground |
| Chân 40 | VDD — Power supply (3.3V) |
| Chân 41 | GND — Ground |
| Chân 42 | VDD — Power supply (3.3V) |
| Chân 43 | GND — Ground |
| Chân 44 | VDD — Power supply (3.3V) |
| Chân 45 | GND — Ground |
| Chân 46 | VDD — Power supply (3.3V) |
| Chân 47 | GND — Ground |
| Chân 48 | VDD — Power supply (3.3V) |
| Chân 49 | GND — Ground |
| Chân 50 | VDD — Power supply (3.3V) |
| Chân 51 | GND — Ground |
| Chân 52 | VDD — Power supply (3.3V) |
| Chân 53 | GND — Ground |
| Chân 54 | VDD — Power supply (3.3V) |
| Chân 55 | GND — Ground |
| Chân 56 | VDD — Power supply (3.3V) |
| Chân 57 | GND — Ground |
| Chân 58 | VDD — Power supply (3.3V) |
| Chân 59 | GND — Ground |
| Chân 60 | VDD — Power supply (3.3V) |
| Chân 61 | GND — Ground |
| Chân 62 | VDD — Power supply (3.3V) |
| Chân 63 | GND — Ground |
| Chân 64 | VDD — Power supply (3.3V) |
Ứng dụng tiêu biểu
LMK5C33216RGCR phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LMK5C33216RGCR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Ultra-low jitter of 40 fs RMS (vsAD9528BCPZ)
- Three DPLLs with programmable loop bandwidth (vsLMK04828BISQ/NOPB)
- Integrated BAW APLL (vsAD9528BCPZ)
Ghi chú thiết kế
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.
Thông tin tuân thủ
RoHS compliant per TI product page. Not AEC-Q100 qualified; automotive variant LMK5C33216RGCRQ1 is available.
