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首頁晶振官方博客低損耗的溫度補償壓控晶體振蕩器AST3TDA-0000-T5非常適合5G基礎設施

低損耗的溫度補償壓控晶體振蕩器AST3TDA-0000-T5非常適合5G基礎設施

來源：http://www.ruhangcar.com 作者：vius 2022年10月19

低損耗的溫度補償壓控晶體振蕩器AST3TDA-0000-T5非常適合5G基礎設施，Abracon meets these requirements by supporting the release of Qualcomm’s Open RAN Platform for

Small Cells, denoted as FSM100xx and FSM200xx, with the introduction of the AST3TDA-0000-T5.

The AST3TDA-0000-T5 is a 38.400MHz temperature compensated voltage controlled crystal oscillator

(TCVCXO) and has been specifically designed for this platform and guarantees exceptional performance

under the varied conditions seen by RRUs.

The AST3TDA-0000-T5 has a tight frequency stability with a typical performance of ±200ppb and

a maximum limit of ±280ppb for the wide array of operating temperatures ranges that the RRUs are

expected to face.

The phase noise performance of the TCVCXO is well suited for the Small Cell Platform as its worst case

rms phase jitter is specified at 100fs where the typical performance is 50fs, easily supporting the IEEE

1588 PTP.

It is crucial that the frequency pull is monotonic ensuring a reliable frequency lock within the Small

Cell Platform and the AST3TDA-0000-T5 does just that. The frequency pull rage typically

performs at ±7ppm and is specified at ±5ppm minimum.

In an effort to minimize synchronization misalignment and maintain a consistent reference across the

5G infrastructure, putting focus on the timing and synchronization aspects of the architecture will be

well rewarded. Each stage of the architecture needs some resilience with respect to unpredictable

environmental conditions and network failures. The most vulnerable failure points of the network

are the RRUs while also being the most sought-after component to add for 5G. Abracon helps

ensure that the stringent timing requirements of 5G are met with the introduction of the AST3TDA0000-T5 at the RRUs.

低損耗的溫度補償壓控晶體振蕩器AST3TDA-0000-T5非常適合5G基礎設施，ABRACON晶振通過支持Qualcomm的開放RAN平臺的發布來滿足這些要求小細胞，標記為FSM100xx和FSM200xx，引入了AST3TDA-0000-T5。AST3TDA-0000-T5是一個38.400MHz的溫度補償壓控晶體振蕩器(TCVCXO)，并專門為該平臺設計，保證了卓越的性能在RRUs看到的不同條件下。

AST3TDA-0000-T5具有緊密的頻率穩定性，典型性能為±200ppb和對于RRUs所處的各種操作溫度范圍，最大限制為±280ppb將臉。

TCVCXO有源晶振的相位噪聲性能非常適合小單元平臺作為其最壞的情況rms相位抖動指定為100fs，其中典型性能為50fs，很容易支持IEEE 1588元。

至關重要的是，頻率拉是單調的，以確保可靠的頻率鎖在小細胞平臺和AST3TDA-0000-T5就是這樣做的。典型的頻率拉怒執行在±7ppm和指定在±5ppm的最小值。

Manufacturer Part Number	Manufacturer品牌	歐美晶振	Type 類型	Frequency 頻率	Voltage - Supply電壓	Operating Temperature 工作溫度
ACOL-18.432MHZ-EK	Abracon晶振	ACOL	XO (Standard)	18.432MHz	3.3V	-20°C ~ 70°C
ACOL-20.000MHZ-EK	Abracon晶振	ACOL	XO (Standard)	20MHz	3.3V	-20°C ~ 70°C
ACOL-24.576MHZ-EK	Abracon晶振	ACOL	XO (Standard)	24.576MHz	3.3V	-20°C ~ 70°C
ACOL-25.000MHZ-EK	Abracon晶振	ACOL	XO (Standard)	25MHz	3.3V	-20°C ~ 70°C
ACOL-27.000MHZ-EK	Abracon晶振	ACOL	XO (Standard)	27MHz	3.3V	-20°C ~ 70°C
ACOL-32.000MHZ-EK	Abracon晶振	ACOL	XO (Standard)	32MHz	3.3V	-20°C ~ 70°C
ACOL-32.768MHZ-EK	Abracon晶振	ACOL	XO (Standard)	32.768MHz	3.3V	-20°C ~ 70°C
ACOL-3.6864MHZ-EK	Abracon晶振	ACOL	XO (Standard)	3.6864MHz	3.3V	-20°C ~ 70°C
ACOL-40.000MHZ-EK	Abracon晶振	ACOL	XO (Standard)	40MHz	3.3V	-20°C ~ 70°C
ACOL-48.000MHZ-EK	Abracon晶振	ACOL	XO (Standard)	48MHz	3.3V	-20°C ~ 70°C
ACOL-4.000MHZ-EK	Abracon晶振	ACOL	XO (Standard)	4MHz	3.3V	-20°C ~ 70°C
ACOL-50.000MHZ-EK	Abracon晶振	ACOL	XO (Standard)	50MHz	3.3V	-20°C ~ 70°C

以盡量減少同步不一致和保持跨5G基礎設施，將重點放在時間和同步方面的架構將是不錯的回報。石英晶體振蕩器體系結構的每個階段都需要一些針對不可預測的彈性環境和網絡故障。網絡中最脆弱的故障點是rru，同時也是5G最受歡迎的添加組件。Abracon幫助通過在RRUs引入AST3TDA0000-T5，確保5G嚴格的時序要求得到滿足。

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