SIT5721

• ● 高精度±5ppb或±8ppb频率稳定性
• ● 气流下10秒的2e-11 ADEV
• ● ±1 ppb/°C频率斜率（ΔF/ΔT）：在任何操作条件下实现最快的卫星锁定

SiT5721数控恒温晶振DCOCXO具有无与伦比的易用性，简化了系统设计

• ● PCB放置无限制
• ● 热隔离无需机械屏蔽
• ● 耐潮湿
• ● 片上调节器，无需外部LDO或铁氧体磁珠

SiT5721数控恒温晶振DCOCXO尺寸小，是高精度和小尺寸系统的理想选择

• ● 9.0mm x 7.0mm 比石英OCXO小75%
• ● 6.5mm高，比石英OCXO薄40%

SiT5721数控恒温晶振DCOCXO具有更高的可靠性和鲁棒性

• ● 抗振性提高20倍，是户外杆式设备的理想选择
• ● 抗麦克风和/或电路板弯曲效应，是大型电信PCB的理想选择
• ● 半导体级质量和可靠性，批次间一致性
• ● 无活动下降或微跳

SiT5721数控恒温晶振DCOCXO具有丰富的可编程功能

• ● 1MHz - 60MHz任意频率，可精确到小数点后6位
• ● 频率稳定度：±5 ppb、±8 ppb
• ● 信号模式：LVCMOS、削峰正弦波

功能引脚示意图	脚位	功能		上拉/下拉电阻	说明
	1	NF	No Function	-	Solder to pads. Connect to VDD [9]
	2	STATUS	Output	-	H: Device in normal operation.   L: After startup, indicates oven has not reached steady state. After steady state is achieved, indicates device internal error.
	3	SCL	Input	-	I2C Serial Clock Input [10]
	4	SDA	Input/Output	-	I2C Serial Data [10]
	5	GND	Ground	-	Connect to ground [11]
	6	CLK	Output	-	LVCMOS, or clipped sinewave oscillator output
	7	DNC	Do Not Connect	-	Solder to pads. Do not connect [12]
	8	NF	No Function	-	Solder to pads. Connect to VDD [9]
	9			-
	10	VDD	Power	-	Connect to VDD

Notes:
9. SiTime recommends electrical connection to VDD. Use narrow traces (e.g. 4 to 6 mil) to avoid significant heat dissipation through these pads.
10. I2C address is a factory programmable option.
11. 0.1 μF capacitor in parallel with a 10 μF capacitor are required between VDD and GND.
12. Connecting DNC pin to VDD or ground may cause the device to malfunction.