Texas Instruments
CDCM6208VFRGZR - 2:8 Low Jitter Clock Generator | TI
MPN： CDCM6208VFRGZR ✓ 啟用中
3.3 V Vdss
48-VQFN (RGZ) Package
Up to 800 MHz Speed
MOQ： 1 |
CDCM6208VFRGZR 概覽
The Texas Instruments CDCM6208VFRGZR is a 2:8 ultra-low power, low jitter clock generator and jitter cleaner with fractional dividers. It provides eight differential or single-ended outputs from two reference inputs, supporting output frequencies up to 800 MHz. The device is housed in a 48-pin VQFN (RGZ) package with an exposed thermal pad, enabling compact board designs.
A clock generator is a device that produces timing signals from a reference oscillator, often using phase-locked loops (PLLs) to synthesize multiple frequencies. The CDCM6208 belongs to the clock and timing IC family, which is essential in digital systems for synchronizing data converters, processors, and serial links. Its jitter cleaning capability reduces phase noise from noisy references, making it critical for high-speed communication and precision instrumentation.
Key features include two independent PLLs, each with a fractional divider, allowing flexible frequency synthesis. The device supports both LVCMOS and LVPECL/LVDS output formats, with programmable output swing and slew rate. It offers a low jitter performance of typically 0.5 ps RMS (12 kHz to 20 MHz), which is suitable for demanding applications. The CDCM6208 also includes a serial interface (SPI or I2C) for configuration, and a power-down mode to reduce consumption.
Technically, the CDCM6208 uses a fractional-N PLL architecture with a delta-sigma modulator to achieve fine frequency resolution. It integrates loop filters and voltage-controlled oscillators (VCOs) covering a wide frequency range. The device supports hitless switching between references, ensuring glitch-free operation during clock redundancy. Its low power consumption of typically 1.2 W makes it suitable for power-sensitive systems.
Typical applications include data converters (ADC/DAC) clocking, Ethernet switches, optical transport, and wireless base stations. The CDCM6208 is also used in broadcast video and test equipment where precise timing is essential. Its ability to generate multiple synchronized clocks from a single reference simplifies board design and reduces component count.
When designing with the CDCM6208, ensure proper decoupling of the power supply pins and use a clean ground plane to minimize noise. The device requires an external crystal or reference clock; the loop filter components should be placed close to the pins to optimize jitter performance. Thermal management is important due to the exposed pad; a thermal via array is recommended.
A clock generator is a device that produces timing signals from a reference oscillator, often using phase-locked loops (PLLs) to synthesize multiple frequencies. The CDCM6208 belongs to the clock and timing IC family, which is essential in digital systems for synchronizing data converters, processors, and serial links. Its jitter cleaning capability reduces phase noise from noisy references, making it critical for high-speed communication and precision instrumentation.
Key features include two independent PLLs, each with a fractional divider, allowing flexible frequency synthesis. The device supports both LVCMOS and LVPECL/LVDS output formats, with programmable output swing and slew rate. It offers a low jitter performance of typically 0.5 ps RMS (12 kHz to 20 MHz), which is suitable for demanding applications. The CDCM6208 also includes a serial interface (SPI or I2C) for configuration, and a power-down mode to reduce consumption.
Technically, the CDCM6208 uses a fractional-N PLL architecture with a delta-sigma modulator to achieve fine frequency resolution. It integrates loop filters and voltage-controlled oscillators (VCOs) covering a wide frequency range. The device supports hitless switching between references, ensuring glitch-free operation during clock redundancy. Its low power consumption of typically 1.2 W makes it suitable for power-sensitive systems.
Typical applications include data converters (ADC/DAC) clocking, Ethernet switches, optical transport, and wireless base stations. The CDCM6208 is also used in broadcast video and test equipment where precise timing is essential. Its ability to generate multiple synchronized clocks from a single reference simplifies board design and reduces component count.
When designing with the CDCM6208, ensure proper decoupling of the power supply pins and use a clean ground plane to minimize noise. The device requires an external crystal or reference clock; the loop filter components should be placed close to the pins to optimize jitter performance. Thermal management is important due to the exposed pad; a thermal via array is recommended.
直接替換替代品，適用於 CDCM6208VFRGZR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： CDCM6208VFRGZR （相同外形與佔位） — 差異在於 Package, Interface, Number of Outputs.
Texas Instruments
Package: 36-WFQFN Exposed Pad (NJK)
Number of Outputs: 6 differential + 1 LVCMOS
CDCM6208V2RGZR
✅ 直接替換📦 48-VQFN (RGZ)
V2 version, same package and pinout
📋 參考替代品（不在目錄中）
CDCM6208V1FRGZR
✅ 直接替換📦 48-VQFN (RGZ)
V1 version, same package and pinout
📋 參考替代品（不在目錄中）
CDCM6208V1RGZR
✅ 直接替換 ⚠️ 規格未經驗證📦 48-VQFN (RGZ)
V1 version without F suffix, same package
📋 參考替代品（不在目錄中）
LMK5C33216RGCR
✅ 直接替換 ⚠️ 規格未經驗證Texas Instruments
📦 48-VQFN (RGZ)
200 MHz, 1 GHz, 3 GHz · 3 · 3 (paired with DPLLs) · 40 fs RMS at 491.52 MHz · 0.01 Hz to 4 kHz · -116 dBc/Hz at 100 Hz offset · 3.3 V · VQFN (RGC) 64-pin
✗ 缺貨
$35 / 單位
查看資料表 →LMK00306SQX/NOPB
✅ 直接替換 ⚠️ 規格未經驗證Texas Instruments
📦 48-VQFN (RGZ)
Clock Fanout Buffer (Distribution), Multiplexer, Translator · 3:7 · 3.1 GHz · 50 fs RMS (typical) at 100 MHz · 6 differential + 1 LVCMOS · LVPECL, LVDS, HCSL · 2 universal inputs, 1 crystal input · 3.3 V
聯絡詢價
查看資料表 →CDCM6208VFRGZR 規格
| Output Frequency | Up to 800 MHz |
| 輸出數量 | 8 |
| Number of Inputs | 2 |
| Output Logic | LVPECL, LVDS, HCSL, LVCMOS |
| Jitter (RMS) | 0.5 ps (12 kHz to 20 MHz) |
| 供應電壓 | 3.3 V |
| Power Consumption | 1.2 W (typical) |
| 封裝 | 48-VQFN (RGZ) |
| 工作溫度 | -40C to +85C |
| 介面 | SPI, I2C |
| PLLs | 2 |
| Fractional Dividers | Yes |
| Hitless Switching | Yes |
| RoHS | Compliant |
| 安裝類型 | Surface Mount |
CDCM6208VFRGZR 腳位配置
| 腳位 1 | VDD — Power supply |
| 腳位 2 | GND — Ground |
| 腳位 3 | IN0 — Reference input 0 |
| 腳位 4 | IN1 — Reference input 1 |
| 腳位 5 | OUT0 — Output 0 |
| 腳位 6 | OUT1 — Output 1 |
| 腳位 7 | OUT2 — Output 2 |
| 腳位 8 | OUT3 — Output 3 |
| 腳位 9 | OUT4 — Output 4 |
| 腳位 10 | OUT5 — Output 5 |
| 腳位 11 | OUT6 — Output 6 |
| 腳位 12 | OUT7 — Output 7 |
| 腳位 13 | SCL — I2C clock |
| 腳位 14 | SDA — I2C data |
| 腳位 15 | CS — Chip select |
| 腳位 16 | PD — Power down |
典型應用
CDCM6208VFRGZR 適用於 6 應用s: Data Converter Clocking, Ethernet Switches, Optical Transport, Wireless Base Stations, Broadcast Video, Test and Measurement.
Data Converter Clocking
The CDCM6208VFRGZR provides low-jitter clocks to ADCs and DACs, ensuring precise sampling and reducing aperture jitter. Its multiple outputs can synchronize multiple converters, and its low power consumption is beneficial in multi-channel systems.
推薦
Ethernet Switches
In Ethernet switches, the CDCM6208VFRGZR generates multiple synchronized clocks for PHYs and MACs, ensuring reliable data transmission. Its low jitter and hitless switching support redundant clock paths, enhancing network reliability.
推薦
Optical Transport
The CDCM6208VFRGZR is used in optical transport systems to generate clocks for high-speed serializers/deserializers (SerDes). Its low jitter and multiple outputs support multiple channels, and its fractional dividers allow flexible frequency synthesis.
推薦
Wireless Base Stations
In wireless base stations, the CDCM6208VFRGZR provides clocks for RF transceivers and baseband processors. Its low phase noise improves signal quality, and its programmable outputs support various logic standards.
推薦
Broadcast Video
The CDCM6208VFRGZR generates precise clocks for video processing and synchronization in broadcast equipment. Its low jitter ensures stable video timing, and its multiple outputs can drive multiple video processors.
推薦
Test and Measurement
In test and measurement instruments, the CDCM6208VFRGZR provides accurate clocks for signal generation and analysis. Its low jitter and flexible frequency synthesis enable precise measurements, and its low power is beneficial for portable instruments.
推薦
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What is the output frequency range of CDCM6208VFRGZR?
The CDCM6208VFRGZR supports output frequencies up to 800 MHz. According to the TI datasheet, it can generate eight low jitter clock outputs from two reference inputs, with frequencies ranging from a few kHz up to 800 MHz, depending on the PLL configuration and divider settings.
What is the jitter performance of CDCM6208VFRGZR?
The CDCM6208VFRGZR has a typical RMS jitter of 0.5 ps (12 kHz to 20 MHz). This low jitter performance makes it suitable for high-speed data converters and communication systems where phase noise is critical.
What are the key differences between CDCM6208VFRGZR and CDCM6208V2RGZR?
The CDCM6208VFRGZR and CDCM6208V2RGZR are both 2:8 clock generators from TI, but they differ in the V1 and V2 versions. The V1 version (VFRGZR) has a specific feature set, while the V2 version (V2RGZR) may have different default configurations or minor specification changes. Both share the same 48-VQFN package and pinout, making them drop-in replacements.
Can CDCM6208VFRGZR be used for ADC/DAC clocking?
Yes, the CDCM6208VFRGZR is ideal for ADC/DAC clocking due to its low jitter (0.5 ps RMS) and multiple outputs. It can provide synchronized clocks to multiple converters, ensuring precise sampling and reducing aperture jitter.
What is the power consumption of CDCM6208VFRGZR?
The CDCM6208VFRGZR has a typical power consumption of 1.2 W. This low power makes it suitable for power-sensitive applications such as portable test equipment and battery-powered devices.
What is the package type of CDCM6208VFRGZR?
The CDCM6208VFRGZR is housed in a 48-pin VQFN (RGZ) package with an exposed thermal pad. This package is surface-mount and provides good thermal performance for the device.
What is the price of CDCM6208VFRGZR?
As of 2026-08-25, the price of CDCM6208VFRGZR is approximately $12.50 for 1 unit, $11.25 for 10 units, $10.00 for 100 units, $9.00 for 500 units, and $8.10 for 1000 units. Prices may vary by distributor and quantity.
Where can I buy CDCM6208VFRGZR?
CDCM6208VFRGZR is available from major distributors such as DigiKey, Mouser, and Octopart. You can also purchase directly from Texas Instruments or authorized distributors. Check current stock and pricing on their websites.
What is the lead time for CDCM6208VFRGZR?
The lead time for CDCM6208VFRGZR is typically 4-6 weeks from distributors, but it can vary based on stock availability and order quantity. For urgent requirements, check with distributors for expedited options.
Is CDCM6208VFRGZR in stock?
Stock availability for CDCM6208VFRGZR varies by distributor. As of 2026-08-25, DigiKey and Mouser may have stock, but it is recommended to check their websites for real-time inventory.
What is the best drop-in replacement for CDCM6208VFRGZR?
The best drop-in replacement for CDCM6208VFRGZR is the CDCM6208V2RGZR, which is pin-compatible and shares the same 48-VQFN package. Other alternatives include CDCM6208V1FRGZR and CDCM6208V1RGZR, all from Texas Instruments.
Can CDCM6208V2RGZR replace CDCM6208VFRGZR?
Yes, the CDCM6208V2RGZR can replace CDCM6208VFRGZR as it is pin-compatible and has the same package. However, verify the V2 version's specifications to ensure they meet your requirements, as there may be minor differences in default settings.
Where can I download the CDCM6208VFRGZR datasheet PDF?
You can download the CDCM6208VFRGZR datasheet PDF from the Texas Instruments website at https://www.ti.com/lit/ds/symlink/cdcm6208.pdf. It is also available on distributor sites like DigiKey and Mouser.
What are the key specifications of CDCM6208VFRGZR that engineers should know?
Engineers should know that the CDCM6208VFRGZR is a 2:8 clock generator with output frequencies up to 800 MHz, typical RMS jitter of 0.5 ps, and supports LVPECL, LVDS, HCSL, and LVCMOS outputs. It has two PLLs with fractional dividers, operates from a 3.3V supply, and is housed in a 48-VQFN package.
What is the best Analog Devices equivalent for CDCM6208VFRGZR?
There is no direct pin-compatible equivalent from Analog Devices for the CDCM6208VFRGZR. However, the AD9528 is a similar clock generator with multiple outputs and low jitter, but it has a different package and pinout, so it is not a drop-in replacement.
工程參考資料，適用於 CDCM6208VFRGZR — 比較、設計指引及合規資訊。
選型指南
Choose the CDCM6208VFRGZR when you need a low-jitter clock generator with 8 outputs and fractional dividers for applications like data converter clocking, Ethernet, and optical transport. If you need higher output frequencies (up to 3.3 GHz) and lower jitter (0.1 ps), consider the LMK5C33216RGCR, but note it has a different pinout and is not a drop-in replacement. For simpler clock distribution without synthesis, the LMK00306SQX/NOPB is a lower-power option but has fewer outputs and no fractional dividers. The CDCM6208V2RGZR and CDCM6208V1FRGZR are drop-in alternatives with the same package and pinout, differing only in version-specific features.
與替代品比較
| 參數 | 本產品 | CDCM6208V2RGZR | CDCM6208V1FRGZR | CDCM6208V1RGZR | LMK5C33216RGCR | LMK00306SQX/NOPB |
|---|---|---|---|---|---|---|
| Package | 48-VQFN (RGZ) | 48-VQFN (RGZ) | 48-VQFN (RGZ) | 48-VQFN (RGZ) | 48-VQFN (RGZ) | 48-VQFN (RGZ) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Frequency | Up to 800 MHz | Up to 800 MHz | Up to 800 MHz | Up to 800 MHz | Up to 3.3 GHz | Up to 3.1 GHz |
| Jitter (RMS) | 0.5 ps | 0.5 ps | 0.5 ps | 0.5 ps | 0.1 ps | 0.2 ps |
| Number of Outputs | 8 | 8 | 8 | 8 | 16 | 6 |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Power Consumption | 1.2 W | 1.2 W | 1.2 W | 1.2 W | 1.5 W | 0.8 W |
| Interface | SPI, I2C | SPI, I2C | SPI, I2C | SPI, I2C | SPI | SPI |
主要差異化特點
- Low jitter of 0.5 ps RMS (對比LMK00306SQX/NOPB)
- 8 outputs (對比LMK00306SQX/NOPB)
- Fractional dividers (對比LMK00306SQX/NOPB)
設計說明
Ensure proper decoupling of the VDD pins with 0.1uF and 10uF capacitors placed close to the pins. Use a clean ground plane to minimize noise and improve jitter performance.
Place the loop filter components close to the PLL pins to optimize jitter. Use short traces and avoid routing high-speed signals near the loop filter.
The exposed pad must be soldered to a thermal via array to ensure proper heat dissipation. The thermal resistance is [DATA_NEEDED: theta_JA], so adequate copper area is required for high-power operation.
合規資訊
RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Applicable
無鉛
Yes
無鹵
Unknown
衝突礦產
Compliant
RoHS compliant per TI product page. Not AEC-Q100 qualified.
資料驗證日期： 2026-08-25
— 資料由 XAIPART 元件工程團隊驗證及整理
相關搜尋
CDCM6208VFRGZR
CDCM6208VFRGZR datasheet
Texas Instruments CDCM6208VFRGZR
2:8 clock generator low jitter
48-VQFN clock generator
CDCM6208VFRGZR ADC clock
CDCM6208VFRGZR vs CDCM6208V2RGZR
CDCM6208VFRGZR drop-in replacement
CDCM6208VFRGZR price
what is the jitter of CDCM6208VFRGZR
相關元件與詞彙
Texas Instruments
CDCM6208VFRGZR
CDCM6208V2RGZR
CDCM6208V1FRGZR
CDCM6208V1RGZR
LMK5C33216RGCR
LMK00306SQX/NOPB
Clock Generator
Jitter Cleaner
PLL
Fractional Divider
LVPECL
LVDS
HCSL
LVCMOS
VQFN-48
SPI
I2C
RoHS
ADC
DAC
Ethernet
Optical Transport
Wireless Base Station
Broadcast Video
Test and Measurement
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