SiT5156

• ● 高精度±0.5ppm频率稳定性
• ● 3e-11平均时间为10秒的ADEV
• ● ±15 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

SiT5156高精度压控温补晶振振动时相位噪声提高20倍

• ● 最大限度地减少高振动环境中的卫星锁定损失

SiT5156高精度压控温补晶振无活动下降或微跳

• ● 无需进行昂贵的筛选或老化试验

SiT5156高精度压控温补晶振具有0.2 ps/mV电源噪声抑制（PSNR）

• ● 通过消除TCXO的专用LDO来减少BOM

SiT5156高精度压控温补晶振信号模式：LVCMOS或削波正弦波输出

• ● 优化EMI和抖动之间的最佳平衡

SiT5156高精度压控温补晶振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：±0.5 ppm、±1 ppm、±2.5 ppm
• ● 2.25V - 3.63V
• ●  牵引范围±6.25 ~ ±3200ppm：定制TCXO规范以实现最佳系统性能

SiT5156高精度压控温补晶可以通过I²C进行数字频率调谐

• ● 消除电路板噪声引起的频移

SiT5156高精度压控温补晶具有卓越的可靠性

• ● 10亿小时MTBF
• ● 终身保修：减少因时钟组件导致的维修成本和现场故障

功能引脚示意图	脚位	功能		上拉/下拉电阻	说明
	1	OE/NC[10]/VC	OE – Input	100kΩ Pull-Up	H[8]: specified frequency output   L: output is high impedance. Only output driver is disabled.
			NC – No Connect		H or L or Open: No effect on output frequency or other device functions
			VC – Input		Control Voltage in VCTCXO Mode
	2	SCL / NC[10]	SCL – Input	200kΩ  Pull-Up	I2C serial clock input
			No Connect		H or L or Open: No effect on output frequency or other device functions
	3	NC[10]	No Connect	-	H or L or Open: No effect on output frequency or other device functions
	4	GND	Power	-	Connect to ground
	5	A0 / NC[10]	A0 – Input	100 kΩ Pull-Up	Device I2C address when the address selection mode is via the A0 pin. This pin is NC when the I2C device address is specified in the ordering code.  A0 Logic Level    I2C Address  0                        1100010  1                        1101010
			NC – No Connect		H or L or Open: No effect on output frequency or other device functions.
	6	CLK	Output	-	LVCMOS, or clipped sinewave oscillator output
	7	NC[10]	No Connect	-	H or L or Open: No effect on output frequency or other device functions
	8	NC[10]	No Connect	-	H or L or Open: No effect on output frequency or other device functions
	9	VDD	Power	-	Connect to power supply[9]
	10	SDA / NC[10]	SDA – Input/Output	200 kΩ Pull Up	I2C Serial Data.
			NC – No Connect		H or L or Open: No effect on output frequency or other device functions.

Notes:
8.In OE mode for noisy environments, a pull-up resistor of 10 kΩ or less is recommended if pin 1 is not externally driven. If pin 1 needs to be left floating, use the NC option.
9.A 0.1 μF capacitor in parallel with a 10 μF capacitor are required between VDD and GND. The 0.1 μF capacitor is recommended to place close to thedevice, and place the 10 μF capacitor less than 2 inches away.
10.All NC pins can be left floating and do not need to be soldered down.