高可靠性能的石英晶體諧振器是調(diào)制解調(diào)器的理想選擇ABM8-16.000MHZ-7-1-U-T，有兩種方法來為系統(tǒng)計(jì)時(shí):使用一個(gè)完全集成的晶體振蕩器，或配合SMD晶振直接用片上振蕩器。使用XO往往會(huì)增加功耗和系統(tǒng)成本。通過將石英晶體與單片機(jī)內(nèi)部的嵌入式皮爾斯振蕩器電路配合使用，降低了系統(tǒng)功耗和成本。大多數(shù)嵌入式振蕩器電路使用皮爾斯振蕩器，這是一種配置，包括一個(gè)簡(jiǎn)單的逆變放大器作為回路內(nèi)的逆變?cè)鲆嬖?br /> 在大多數(shù)情況下，放大器單元是在MCU內(nèi)部，而頻率選擇網(wǎng)絡(luò)是在MCU外部。外部網(wǎng)絡(luò)的關(guān)鍵部件是石英晶體。還使用了相關(guān)的回路電容和串聯(lián)(限流)電阻(Rs)。

Manufacturer Part Number 原廠編碼	Manufacturer廠家	Series型號(hào)	Type 系列	Frequency頻率	Package / Case包裝/封裝
ABLS-37.500MHZ-12-1-U-F-T	Abracon晶振	ABLS	MHz Crystal	37.5MHz	HC49/US
ABSM2-16.9344MHZ-4-T	Abracon晶振	ABSM2	MHz Crystal	16.9344MHz	4-SOJ, 9.40mm pitch
ABM10-40.000MHZ-E20-T	Abracon晶振	ABM10	MHz Crystal	40MHz	4-SMD, No Lead
ABM8-36.000MHZ-10-1-U-T	Abracon晶振	ABM8	MHz Crystal	36MHz	4-SMD, No Lead
ABM8-16.384MHZ-10-1-U-T	Abracon晶振	ABM8	MHz Crystal	16.384MHz	4-SMD, No Lead
ABLS7M2-12.000MHZ-D-2Y-T	Abracon晶振	ABLS7M2	MHz Crystal	12MHz	2-SMD, Flat Lead
ABLS7M2-14.7456MHZ-D-2Y-T	Abracon晶振	ABLS7M2	MHz Crystal	14.7456MHz	2-SMD, Flat Lead
ABM8-16.000MHZ-7-1-U-T	Abracon晶振	ABM8	MHz Crystal	16MHz	4-SMD, No Lead
ABM8-25.000MHZ-D2Y-T	Abracon晶振	ABM8	MHz Crystal	25MHz	4-SMD, No Lead
ABLS-19.6608MHZ-B2-T	Abracon晶振	ABLS	MHz Crystal	19.6608MHz	HC49/US
ABLS-48.000MHZ-B2-T	Abracon晶振	ABLS	MHz Crystal	48MHz	HC49/US
ABLS3-6.144MHZ-D4Y-T	Abracon晶振	ABLS3	MHz Crystal	6.144MHz	HC49/US
ABLS3-30.000MHZ-D4YF-T	Abracon晶振	ABLS3	MHz Crystal	30MHz	HC49/US
ABL-22.1184MHZ-B2	Abracon晶振	ABL	MHz Crystal	22.1184MHz	HC49/US
ABLSG-4.500MHZ-D2Y-T	Abracon晶振	ABLSG	MHz Crystal	4.5MHz	HC49/US - 3 Lead
ABLSG-12.288MHZ-D2Y-T	Abracon晶振	ABLSG	MHz Crystal	12.288MHz	HC49/US - 3 Lead
ABLSG-13.500MHZ-D2Y-T	Abracon晶振	ABLSG	MHz Crystal	13.5MHz	HC49/US - 3 Lead

高可靠性能的石英晶體諧振器是調(diào)制解調(diào)器的理想選擇ABM8-16.000MHZ-7-1-U-T，這種方法中使用的石英晶體被稱為平行鍍晶體，其標(biāo)準(zhǔn)值如10pF、12pF、18pF等。這意味著當(dāng)閉環(huán)有效電容完全等于石英電鍍電容時(shí)，最終振蕩頻率將在獨(dú)立石英晶體的公差范圍內(nèi)。
Abracon推出的ABM8-16.000MHZ-7-1-U-T，石英晶體諧振器，接縫密封包裝，確保高可靠性，可提供緊密的公差和穩(wěn)定性，適用于RoHS回流，應(yīng)用：高密度應(yīng)用，調(diào)制解調(diào)器，通信和測(cè)試設(shè)備，無線應(yīng)用。

There are two ways to clock a system: use a fully integrated crystal oscillator, or mate the crystal directly with the on-chip oscillator. Using an XO tends to increase power consumption and system costs. By mating a quartz crystal with the embedded Pierce oscillator circuit inside the MCU, system power consumption and costs are reduced. The majority of embedded oscillator circuits use the Pierce oscillator, a configuration which comprises of a simple inverter amplifier as the inverting gain element within the loop.

In most cases, the amplifier unit is internal to the MCU and the frequency-selective network is external to the MCU. The key component in the external network is the quartz crystal. Associated loop capacitors and a series (current limiting) resistor (Rs) are also used.
Quartz Crystals used in this approach are coined as Parallel Plated Crystals, with standard values such as 10pF, 12pF, 18pF, etc. This implies that the final oscillation frequency will be within the tolerance of the standalone quartz crystal when the closed-loop effective capacitance is exactly equal to the quartz plating capacitance.

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